Author Topic: KSGER T12 STM32 V3.1S soldering station  (Read 28250 times)

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Offline flurl

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KSGER T12 STM32 V3.1S soldering station
« on: December 29, 2019, 03:41:52 pm »
Hi!

I just wanted to buy a KSGER T12 soldering station from aliexpress. When I noticed that there's been a new version V3.1S released, see https://www.aliexpress.com/store/group/STM32-V3-1S-Station/1486111_516916735.html?spm=a2g0o.detail.0.0.58f51775oP5qmU

I didn't find any information about the differences to V2.1S. Does anyone know?

Thanks!
 

Offline Jon.C

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #1 on: December 29, 2019, 08:19:26 pm »
my 2.1s exploded within 10 months of buying it
 

Offline flurl

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #2 on: December 31, 2019, 12:24:54 pm »
I got an answer from the aliexpress store:

Quote
V3.1S add Russian language,and fixed some small problems on V2.1S,and V3.1S is much more stable than V2.1S

I guess, I'll give V3.1S a shot
 

Offline Jon.C

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #3 on: January 08, 2020, 06:22:52 am »
my 2.1s exploded within 10 months of buying it

KSGER sends me a new free power supply   :clap:
 

Offline Electric Elf

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #4 on: January 08, 2020, 12:39:23 pm »

From the store named KSGER T12
Quote
KSGER 2020 New Arrival V3.1S T12-K,BC2,BC3,ILS,D24,B,KU Solder Tips STM32 OLED T12 Soldering Station Gift For Boy Friend
Attention: you can choose the tips' types as you need, make a note in the order to replace the standard types, but BCM2 BCM3 are not avilable in this kit.
the order will be sent out within 24 hours.


3.1S Advantage:
1. more stable system
2. with Russian language
3. succinct display
4. oversize temperature number shows(especially for older persons are better, easy to look)


I am also interested what other issues are fixed, as I have the old one. And/or option to upgrade the firmware without buying new hardware.
 

Offline saratoga

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #5 on: January 09, 2020, 02:26:34 pm »
Once you get it, open up the unit and post pictures.
 

Offline flurl

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #6 on: January 16, 2020, 11:55:40 am »
I got mine yesterday
 
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Offline Jon.C

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #7 on: January 16, 2020, 07:51:25 pm »
thanks for the pictures


that transformer looks a bit ugly 
« Last Edit: January 16, 2020, 07:55:21 pm by Jon.C »
 

Offline ulwur

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #8 on: January 18, 2020, 03:58:34 pm »
Looks like that live trace still is routed underneath the heatsink with only the soldermask as insulation.
 

Offline flurl

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #9 on: January 20, 2020, 06:34:23 am »
That's some kind of cardboard remnant on the transformer. Not sure, why cardboard is glued to a transformer at all.
Yes, no difference in that trace insulation as far as I can say - don't have the predecessor.

Another quirk I noticed: From time to time the station turned on on itself, even when the switch was turned off. Just for half a second or so. I noticed it beeping or the screen blinking. That stopped after I turned the plug 180° in the socket to change live and neutral.
 

Offline cobramostar

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #10 on: January 25, 2020, 03:49:11 pm »
you can give information on how to act hw 1.3 and the capabilities of plugging in the jbc 245 as this possibility, if any, is very attractive
is it advisable to buy

thanx you
 

Offline mattej

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #11 on: February 07, 2020, 08:14:41 am »
Looks like that live trace still is routed underneath the heatsink with only the soldermask as insulation.

I'm using HW v2.1, and the heatsink is actually floating, the same is seen on the pictures of v3.1. There's thermal pad (non conductive) beneath the TO-220 and screw itself has a white plastic spacer that does not allow screw to touch the sink of of the TO-220.

Anyway, the v2.1 is now 35$ on BG if anyone cares to grab a cheap one, not the newest one.
 

Offline is-this-taken

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #12 on: February 24, 2020, 11:44:01 pm »
I'm considering getting the v3.1 hardware, are there any knows issues?
Also, how does it compare to 2.1, besides the listed changes?
 

Offline benadamson

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #13 on: May 02, 2020, 07:03:16 pm »
I'm also interested in if there's any useful changes in this version. I've tried to sum up a couple of other posts below. I'm uncertain if a V1 was ever sold or marketed as V1.

From what I've found in this response and this response:

V2.0:
  • Had LDO overheating issues
  • Doesn't appear to be sold now
V2.01:
  • Earliest version still sold?
  • Fixed overheating issue with a copper pour
  • Approx £35 as kit with 2 tips and plastic handle
V2.1S:
  • Has pads for MOSFETs for pumps, however these seem 'pre-vestigial' in that the functionality isn't there yet
  • Has a bug where there is high parasitic drain from the RTC battery (fixable by removing R10)
  • Approx £45 as kit with 2 tips and plastic handle
V3.1S:
  • Undefined 'stability improvements'
  • "Succinct" display, whatever that means, possibly just referring to the larger font of the temperature readout
  • Russian language support
  • Approx £55 as kit with 2 tips and plastic handle


From all of this it appears that there's nothing particularly useful worthy of the £20 premium the 3.1S model has over the 2.01 model.
Perhaps someone else here has more information on other changes / safety improvements / firmware improvements between the versions?
 
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Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #14 on: May 17, 2020, 10:32:23 am »
It looks like R10 is still fitted to the control PCB; unless the schematic is updated and RefDes renumbering has occurred, that means a battery life of 2 weeks. Not sure I'm convinced that this is better than 2.1 which I have 2 of.
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Offline KL27x

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #15 on: May 19, 2020, 02:13:12 am »
Gandalf, look at the post counts. This thread is KSGER marketing BS.
 
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Offline Electric Elf

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #16 on: May 19, 2020, 02:10:45 pm »
It looks like R10 is still fitted to the control PCB; unless the schematic is updated and RefDes renumbering has occurred, that means a battery life of 2 weeks. Not sure I'm convinced that this is better than 2.1 which I have 2 of.

Mine has R10 (V2.1S) and does not drain the battery at all - it sits stored for the last 3 months, in a drawer. Bought Nov. 26 2018 from KSGER Official Store on Aliexpress, although it is not for sale anymore.

[attach=1]
 
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Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #17 on: May 19, 2020, 02:42:58 pm »
They've renumbered the components, R10 is a single resistor that sits across the battery in the 2.1S versions.
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Offline hpmaxim

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #18 on: May 22, 2020, 02:03:47 pm »
Anyone know how this compares to Quicko's T12 STM32 station: https://www.aliexpress.com/item/32994824865.html
 

Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #19 on: May 22, 2020, 07:00:29 pm »
Anyone know how this compares to Quicko's T12 STM32 station: https://www.aliexpress.com/item/32994824865.html
The control board looks the same but the power supply board is a different one, the most obvious difference is that there's a DC input on the Quicko's PCB.
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Offline hpmaxim

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #20 on: May 22, 2020, 07:48:33 pm »
Anyone know how this compares to Quicko's T12 STM32 station: https://www.aliexpress.com/item/32994824865.html
The control board looks the same but the power supply board is a different one, the most obvious difference is that there's a DC input on the Quicko's PCB.

But which version of the STM32 control board?  Also, the odd thing is that the DC input is 4A, but KSGER claims to have a higher amperage power supply, so does that mean the power supply in the Quicko is lower current and that the STM32's max power output is lower as well?
 

Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #21 on: May 26, 2020, 12:04:12 pm »
Here's a picture of my KSGER T12 Soldering Station Control PCB. This is supposed to be vn 2.1S and you can see that I've removed R10 which was the stupid resistor that sat across the battery and discharged it in about 2 weeks.
« Last Edit: May 26, 2020, 12:32:03 pm by Gandalf_Sr »
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Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #22 on: May 26, 2020, 12:56:00 pm »
So I'm up at our cottage for this week and have got back to looking at my design for a replacement DIY PCB for this; I've decided (at least for the first effort) that all I will do is produce a PCB that is a fit and function replacement for the 2.1S (see picture in previous post) but I will try to make improvements where possible but I'm trying to design in parts that we can actually buy from suppliers such as Digikey and Mouser. So, here's a list of questions that I'm seeking input on:
1. Is the attached FloobyDust pdf the correct schematic for 2.1S?
2. What are the connector part numbers for the 2 pin power and battery headers?
3. The only OLED I can find that looks like the one on my PCB is this one from Banggood but it appears to have GND and VCC reversed so I've included a resistor patch (my R1) that allows the pins to be reversed.  Can anyone point to a different OLED or is this one OK?
4. I know the KSGER PCB has unpopulated desoldering pump components but do I need to include space for these?  It's no problem doing so but I have never seen or heard of anyone using one so maybe it's a unicorn?
5. Does the processor need to be a STM32F103 or STM32F102?
6. There's an LED on the KSGER PCB but, if it does something useful, shall I move it to the front and make it through hole 3mm?

I've got a bit more work to do and then I'll post the schematic up here, probably later today or tomorrow.  Input on the above or any other suggestions is welcome.
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Offline floobydust

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #23 on: May 26, 2020, 09:32:20 pm »
If you're going to do a H/W V2.1S compatible board, start a new thread. There are a few boards+bom already out there for people to build and flash existing F/W. I will compare their schematics to mine, but I need a day or so. I have seen nothing (pics) about H/W version 3.1 differences (which goes with S/W 3.1S). But 2.1S is pretty good if the bugs are not copied.
The V2.1S schematic I drew, KSGER now only sells when you purchase an entire station. Kit or alone, the V2.1S recent they deleted the vaccum pump mosfets and buck-converter and went back to LDO, added a header for pushbuttons and SWD, the GX12-5 does not solder directly to it. It seems like a cheaper offering.
 
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Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #24 on: May 26, 2020, 10:56:31 pm »
Yeah i agree. and also a couple more observations:

* The photo earlier in this thread taken by flurl shows the back of a controller pcb with a silkscreen on it that ssays 'OLED-V3.0S'. Well that pcb has a 64 LQFP on it an the green thru hole capacitor making it look 'rather a lot similar' to the 2nd type of a 'v2.1S' on the other thread. But not quite, when we look really more closely and scrutinize it.

2 more points.

* There should definately be included the mod required for JBC tips. This is documented in PTDreamer 's blog posts. Like with some nice and reasonable means of selecting / enabling which tip is to be used. Even better to include support for more than just only the T245 tips. There is also T210 and the big ones (T470 ?). That would be really awesome I think. Especially if there was the capability to rig a selector switch.

 :-+

* Finally is there really some 4A limit? That is to say it would not be a high enough performance to compete with other known designs. This was also mentioned on the other thread as being rather unfortunate. Well i should clarify that maybe is not bad for an average sinking into a thermal load. But a higher short term burst current (more like 8-10A) would improve the heat up time. When the tip is coming up to temperature and not yet under load. Which is to say only for about 3-4 seconds. IDK if that is necessarily a practical consideration with this PCB. But hope that it is overbuilt in this respect. Should the firmware be capable to support that kind of improved operation.
 
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Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #25 on: May 27, 2020, 10:42:01 am »
I will start another thread but the burning question is this, what version of software will my design use?  If no single coder such as PTdreamer will commit to supporting my hardware design then I will put a different processor on the PCB (probably a 32 bit PSoC) and adapt/write the code myself.

[EDIT] I also want the firmware to be 'good'; I have only ever used the KSGER firmware (if they wrote it) and it's actually OK but the clock is useless mainly because it keeps terrible time although that's probably because of the cheap 32,768 crystal they used. Am I right in saying the KSGER firmware isn't publicly available? If not, then what's the closest or 'best' firmware to aim for?
« Last Edit: May 27, 2020, 10:57:37 am by Gandalf_Sr »
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Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #26 on: May 27, 2020, 11:41:36 am »
I will start another thread but the burning question is this, what version of software will my design use? 

This is the version:

https://github.com/dreamcat4/stm32_soldering_iron_controller

I do plan to add some small fixes, and improve the readme file. To make clear simple instructions about what boards its been tested on. And how to compile etc. That is for the v2.1S hardware.

In terms of knowing who will publicly support it. That is really very much a case of this codebase being "the most well supported" of any of them right now (most broadly speaking). Of any of these projects so far. If you make your own entirely new design based on a different MCU then that will have the side affect of fragmenting things even further to have yet another new  project with a smaller user base that is actually interested in it.

So unless *you* are going to support the firmware, on the new platform... then your stated goal will not result in being a better option in the respect of software support. Because you are now requiring an additional burden that they make themselves a PCB and populate it etc.

There are ways to mitigate that. For example is this other guy (on Github) who's project is designed in mind with SMD assembly on JLC PCB. So a project like that would be less hassles for somebody else to order the hardware. Or if you can get the PCB up on ebay etc. The main question people will be asking is what makes your project better than the 5-10 other alternatives out there.

So which features are you personally interested in implementing? Do those line up with what everybody else is looking for? More consideration on that aspect would help to make your project stand out from the other existing projects. And make it more likely to be the one that people choose instead.

Honestly you also need to come up with a better reason than saying that the 'best supported project of all of them' is not well enough supported software wise. And that should (I am guessing) be with hardware features which cannot be implemented as mods to these STM32 OLED boards.
 
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Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #27 on: May 27, 2020, 04:28:27 pm »
Thanks,

I am not trying to be a dick, I just don't want to do a design that has no usable firmware available.  It seems to me that having a PCB available that eev bloggers could build their own might get away from the $50 junk versions that seem so ubiquitous.  Is the github link you gave for firmware that has similar functionality to the the KSGER version, menus, saving Cal for different tips etc?

What I was saying before was that, if there was no 'good' firmware available, and I was going to write my own, I may as well do it for a processor that I had experience with.

The idea of changes actually wasn't to try to change the circuit but put better components such as an accurate Xtal or make the existing LED visible from the front. 
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Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #28 on: May 27, 2020, 07:47:21 pm »
Is the github link you gave for firmware that has similar functionality to the the KSGER version, menus, saving Cal for different tips etc?

What I was saying before was that, if there was no 'good' firmware available,

We shall see how good it is.... I have not gotten far enough to try it myself yet... because I am still working on the README file. And uploading that to github. Here it is so far:

https://github.com/dreamcat4/stm32_soldering_iron_controller

These BRAND NEW instructions (as of today). Will get you all hooked up over SWD. And into a situation where you can flash the firmware. Which is heh - the point where I managed to get up to today. And have all fully documenteded above there ^^. But no further.

However before flashing it I really want to backup the existing OFW image that comes on the device. If i can. Otherwise if I can figure out how to partially hash the onboard firmware against the numerous different official KSGER firmware images. To get a match for which KSGER firmware is compatible for this particular device.

By including those extra steps in the README. That then enables more other people with different PCB revisions to safely try out this 'v2.1s' branch of the open source PT Dreamer firmware. Since they can then know how to flash back to the OFW if it not work with their specific PCB version. Rather than left with a device with a blank screen, not usable afterwards.

I think this is worth spending the extra time on. Before I flash my own device here. Even though I don't particularly want to go back to the official KSGER firmware myself. Since it does not support JBC tips, does it? Well that's no good!

In fact that is the other main thing I have not gotten around to (yet). Before starting this up. I need to modify the PCB (as per PTDreamer's guidelines). So that the wiring on the controller PCB is correct to work with my JBC tip. Which is also absolutely needed for ensuring the cartridge is grounded properly, etc. And not be a risk to damage.

That I have not started either yet, and will not get around to until the existing OFW firmware is safely identified here (so that it can be restored).

 :-+
 

Offline bitwelder

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #29 on: May 28, 2020, 11:15:39 am »
I'm trying to design in parts that we can actually buy from suppliers such as Digikey and Mouser.
How about making it suitable for LCSC / JLCPCB, so to have a cheap option to get PCB plus SMT assembly, at least for the jelly-beans parts (or similar far-east PCB+SMT manufacturers) ?
 

Offline Gandalf_Sr

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #30 on: May 28, 2020, 01:19:12 pm »
I'm trying to design in parts that we can actually buy from suppliers such as Digikey and Mouser.
How about making it suitable for LCSC / JLCPCB, so to have a cheap option to get PCB plus SMT assembly, at least for the jelly-beans parts (or similar far-east PCB+SMT manufacturers) ?
Well I've had most of my recent PCB designs made by JLCPCB (bare PCBs) and the 'jelly bean' parts can always be assembled by them but even that is missing my point about avoiding the issues of the design becoming a lowest cost race to the bottom.  If that's the point then why not just buy what exists today?

Instead I envisioned a bare PCB designed to take quality parts like accurate crystals and reliable rotary encoders and that could be assembled by hobbyists.  As for the code, I am close to just designing my own hardware and adapting/writing the code myself.
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Offline amix

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #31 on: July 05, 2020, 09:47:48 am »
Gandalf, look at the post counts. This thread is KSGER marketing BS.
If it is, then it is orchestrated very well.

EDIT: Just as I saw my message appearing, I realized, that I also only have a post count of five, lol. But that's, because I do not hang around here often, mostly only reading. You can check the registration date in my profile, I guess.

EDIT2: I also found this on Hackster (Soldering Iron Controller for Hakko T12 Tips on STM32) with this firmware: hakko_t12_stm32
« Last Edit: July 05, 2020, 11:35:52 am by amix »
 

Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #32 on: July 17, 2020, 05:27:31 pm »
Looking at the Aliexpress store at KSGER and it appears they have a disclaimer for the 3.1S units.  There looks to be an issue with what the unit says the temperature of the tip is vs what people are measuring it to be.  I don't see that same disclaimer with the 2.1S units.  Can anyone confirm if the older 2.1S units were fairly accurate in reading tip temperature?  Anyone with a 3.1S notice an issue with tip temperature vs. what the LCD is saying it is or are you getting accurate readings?

Here is the exact wording lifted from the ad on Aliexpress:
Quote
Regarding the problem that the temperature displayed on the soldering station is not accurate with the actual temperature:
Please use the soldering iron tip temperature tester (please do not use a multimeter) to test the temperature. When the soldering station is working at low temperature (less than 280 degrees), the temperature displayed on the soldering station and the actual temperature of the soldering iron tip are only for reference , which is not accurate because They are affected by the surrounding environment. The surrounding environment will carry away heat, causing the soldering iron tip to lose some heat. If using a HB tip thermometer, pls make sure the soldering iron tip is suspended at the center of the temperature sensing line. If you are very strict with temperature, please do not buy this soldering station.
« Last Edit: July 17, 2020, 05:31:49 pm by totalnoob »
 

Offline benadamson

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #33 on: July 24, 2020, 08:58:58 am »
Has anybody worked out if there are any benefits to the versions after 2.01, or is it just more money for no good reason? There seem to be bugs in the newer versions. Not sure if other undocumented bugs are present in the older ones.
 

Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #34 on: July 24, 2020, 11:31:27 am »
The newer reviews I have seen online seem to indicate the parasitic drain was fixed in the later 2.1s models.  Outside of that problem, most of the reviews for the 2.1s's have been positive, I am not sure what other "bugs" there are in the 2.1s models, except for the hardware safety issues (i.e. the heat sink potentially providing a path between the household voltage side vs. the electronic voltage side, grounding issues, etc.) but they affect all models so far.  I have not seen any reviews of the 3.1s yet, which is why I find it puzzling that on Aliexpress, KSGER specifically calls out that the tip temperature reading is off.  Since I have found no reviews calling this out, I can only assume they have had quite a few returns over this issue and since the reviews of the 2.1s's indicate the temperature sensor readings are fairly accurate, I am thinking its an issue with the 3.1s firmware.
 

Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #35 on: July 24, 2020, 12:00:14 pm »
In addition compatibility for JBC tips although that potentially could be modded on an older PCB. New versions have wapped linear 3.3v regulator for a switching one. Which is going to introduse switching noise on the rails for the ADC. Which is bad for the temperaature measurement. They also cheaped out on the op amp (perhaps also the crystal). In particular the cost reduced part of the op amp is also going to mes up the temperature sensing circuit before it gets into the ADC. So there you have it.

If you want any better answers then I suggest you go ask KSGER themselves for why they keep on change such things. If they care at all for their future reputation? Perhaps not.
 

Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #36 on: July 24, 2020, 03:08:43 pm »
Thank you, Dreamcat.  So to clear things up, were these changes (i.e. switching regulator and cheaper op amp) made only to the 3.1S version or did they make these changes in the 2.1S as far as the units you have seen (since it is possible they have incorporated these changes into the latest 2.1S offerings, it has been documented they made a mid-model change, and kept the same model designation, to eliminate the R10 issue in the 2.1S's)? 

Thanks.
 

Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #37 on: July 24, 2020, 03:39:26 pm »
Unfortunately dude, the KSGER version numbering schemes are not unambiguous. So when we all talk about 'version X.y {S}' it's not completely clear which one we actually mean when we say that. Which really makes these things more difficult to talk about.

Even KSGER themselves has taken a same PCB revision and labelled it both '2.1' and '3.0' simultaneously at the same time. Which just goes to show how totally worthless this version numbering scheme actually is.

But what you can do is look at my research pages here on github. It is a work in progress. I am still halfway through gathering source materials. Mostly translating from other online sources (that is writting in Russian or Chinese). YMMV.

I think the Blue 'updated version' shown here is arguable 'the best'. Because it adds in the corner 2 pads marked for "JBC or T12". Wheras the original green one did not have explicit point for connecting the JBC. Regardless of that connecting a JBC is perhaps a more complicated matter.

https://github.com/dreamcat4/t12-t245-controllers-docs/tree/master/controllers/stm32-t12-oled#v21s-original-version-green-pcb

If you want to browse online into the many other subfolders you will the find further useful research links and information. Including other alternative board designs. And discussion pages which themselves contains a lot of really useful information and explanatory diagrams. Some of those sources have been translated but not been fully analyzed / documented. Because they are far too big. While others are currently missing because they have not been translated, put back together in a reasonably loadable / browsable version file yet.

BTW perhaps some pages view better on Firefox.
« Last Edit: July 24, 2020, 03:44:11 pm by dreamcat4 »
 
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Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #38 on: July 24, 2020, 05:20:37 pm »
Thank you.  I know that at least the numbering system KSGER used is not totally to be trusted, as I said, from what I can make out looking at the various Youtube reviews, it appears that the early "2.1S" versions had the R10 that drained the battery while later "2.1S" versions had a different control board layout that did not have that R10 or used a "R10" labeled resistor for a different purpose.  What muddies things is when some reviews came out in the same timeframe but some received units with the R10 that drains the battery and others without the R10 that drains the battery, I just chalked that up to KSGER sending out a mixture of the older batch along with the newer batch.  I didn't think they made as many changes during the same "model" run as you indicated.  That's good to know, but adds to the confusion.  I will look at what you have gathered.

Thanks again.
 

Offline floobydust

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #39 on: July 24, 2020, 07:07:46 pm »
It's just that they treat a version number as a model number.
Corrections/changes are made and a board is a bit different- but want it considered the same model.
Also people are copying the design, adding mistakes or making it cheaper, but keeping the root version number.

To make it even worse, there are three version numbers - the controller hardware, the firmware, the soldering station.

Russians are saying V3.1S is KSGER taking control of the firmware, and it's buggy, so they recommend rolling back to V2.1S firmware?
 

Offline Acecool

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #40 on: August 04, 2020, 11:21:21 pm »
I bought the 3.1 and I didn't get the new case... they used the old smaller case without the silver front... I was hoping to slide it into a rack and use that to brace it.. but oh well..

The thing says error then heats up, then error, then heat sup...

The mini GX12-5 connector has no screw so the black plastic part rotates freely.. This isn't good especially if there are wires loose. The QuickGo or whatever station has a 4 pin out, the KSGER has 5... It seems like 2 of the pins are ground pins on the KSGER...

I bought mine on banggood and it was $56 USD shipped with a cheap plastic iron which may be the issue I'm having with the unit... I have gotten no support from them in trying to resolve the issue and I've sent them the video.



The case is not grounded, but some of the metal pieces do appear to have a ground.

My unit rattled inside - so I added a few dabs of hot-glue. I still need to add grounding wire. I'm not a fan of the 3.1 variant where the 2.1 variant had plugs from the switch to the board, etc... and a plastic case... the 3.1 went back to direct soldering the spade connectors of the switch and power socket back into the board.

3.1 uses a tiny battery welded directly to the front board instead of a larger battery on a long lead. This doesn't bang around which is nice.



3.1 Grounds: The 3 pin wire grounding pin does go to the tip of the handheld iron. It also goes to 2 of the 5 pins on the GX12-5 pin connector. The threads are NOT grounded on this connector as they didn't add a grounding wire. The metal underneath the rotary encoder is also NOT grounded. The case is NOT grounded. However, in most parts - if you got the BLACK anodized case, it is hard to find a spot which you can actually get current to go through - so that is good... but there are bare metal parts where the screws go in, and scratches or breaks in the anodized material near the corners - front face / rear face, mating points because of cutting, filing, scratches or something else. So it is possible to find exposed areas you can get current to flow through and get 0.00 - 0.02 Ohm resistance through those areas.


Overall - I'd modify mine if it doesn't need to be replaced to add grounds to the inside of the case - actual wires to any exposed metal, the lids / case, etc... and I'd probably also change the GX12 connector for something someone suggested to me for the DE-DER 5000 unit... audio XLR or something connectors as they are high quality, quick release, grounding pin, easy to solder to and has shields.... This would mean that any replacement iron I got would need to be resoldered... or I'll make an adapter for testing...

I will likely also make it my stand-alone rework station by building a box around my fan controller for my hot air gun which is on my rework station now ( and I removed the permanent connection for a GX16-8 connector ) and change it to a 4 or 5 pin connector, inline controller for fan speed, and have the station control heat... Then maybe add pump support with inlet and outlet so I can plug in a desoldering gun with a small motor and also use a hot air micro-pencil too.... then get a few of them so I can use the features all at once.

Then, instead of having 3 stations on my desk, I'll have 1 capable of all 3... or 3 mini stations which are the size of 0.5 of just the desoldering one. I've seen some posts on desoldering gun motors which are absolutely tiny and work just as well... they need the inlet and outlet so that'd work for a hot air pencil with the heat coming from the pencil, and air from the outlet of the pump...

Also, since it is STM32 based, I have already worked with that chipset on another project and recoded a few things so I have the programmer... and I think there are pins available to hook up... so I'll just add the color-coded headers as I did to the USB to logitech adapter and look at the software and see about making it more in-line with what I want...

The press-in and rotate seems a bit meh for changing tips or calibration... and long-press is too long for me. quick tap to change temp is ok.
Just because it works, doesn't make it right -Josh 'Acecool' Moser
 

Offline Acecool

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #41 on: August 22, 2020, 04:32:29 pm »
Does anyone have the 3.1 hex file? The STLink V2 utility told me to disable read protection to read and I did and I clicked ok, in the options and it decided to read immediately without me telling it to read and it actually wrote and wiped the entire chip. Such an annoyance right now to have the chip wiped when I didn't tell it to wipe the chip, and when I was in the settings menu, and not in the programming utility....


STM32F103RBT6
Just because it works, doesn't make it right -Josh 'Acecool' Moser
 

Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #42 on: September 03, 2020, 04:19:35 pm »
In the interest of keeping all information about the V3.1S in the same thread, I am going to give a preliminary review since I just received it and have not actually used it beyond turning it on and plugging in the handle and a tip.  However, I will comment on the handle I ordered with it.  I went "whole hog" and bought the SS handle.  I can't comment on whether it heats up and becomes uncomfortable when using it after a long period of time.  I can only comment on the tip fit in the handle.  There is no positive "click" or feedback to let me know the tip is in enough and the tip is very easily pulled out.  As a matter of fact, the fit seems loose enough that I am concerned it may just fall out, although that did not happen in my very limited testing (but I did not actually use it).  Not necessarily a bad thing to be able to take the tip out easily, but I was concerned it was loose and that it being loose is why I kept getting an error message as the tip was heating up in my first test and I was not sure if that was because the tip was not seated properly or if it was because it was a new tip the controller was not reading it properly (KSGER's Aliexpress store mentions something about this).  All of a sudden, the error stopped flashing and the temperature reading stopped fluctuating. There was no indication that the tip was loose as I made erratic movements to see if the error came back, it did not.  I will likely order one of the carbon fiber aluminum handles because they tend to get decent reviews, to see if they have a better indication that the tip is seated correctly.  I cannot recommend the SS handle at this time because of not being able to determine if the tip is seated properly.

I do reserve the right to add a reply later to provide updates on what I find I like or dislike. 
 

Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #43 on: September 03, 2020, 08:37:39 pm »
Dude,

 :-DD

best handle is a JBC handle. The unbranded T245 version (that comes with other JBC clone stations etc.) is completely authentic, but not so expensive. Less than $50 off aliexpress or elsewhere.

For T12 handle I would look for something.... cannot remember now where i saw it. But it was probably some Russian dudes. So if you go into my research folder, and click on those "Accessible Version" (translated) pages. And scroll thru the comments sections in each page:

https://github.com/dreamcat4/t12-t245-controllers-docs/tree/master/research/mysku

You will probably find it being reffered to (eventually, after much scrolling, many comments).

Or you could ask the Chinese guy who makes those new 'Woka' stations. He would probably know too. I have been meaning to email him on his WeChat email address at some point. Never actually got around to it. Oh well!
 
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Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #44 on: September 04, 2020, 01:19:41 am »
Thanks, I'll have to look up the Woka station.  In this mini-review, I was referring to the T12 handle, obviously.  I'd like to get a fairly decent one, I am sure the JBC is the best handle, but I am really only interested in the ability to convert these stations for use with JBC handles, academically.   And from what I have seen/read is that the clone JBC handles seem to be pretty good quality even if not completely up to JBC quality.  If the clone "JBC" tips had as large of a selection of different styles and were relatively as cheap as the T12 Clone tips (even if they were a couple of bucks more per tip), then I'd probably be more interested in the conversion process as a real project, rather than something to keep in mind as a "someday" project.  I'll check out your folders again, about handles, these were specifically about T12 handles, right?  Were they reviews your archived?     
 

Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #45 on: September 06, 2020, 02:24:09 am »
Following up on my mini review, mostly of the handle.  I wanted to confirm that when I played around with it tonight, the tip I had used before worked right, right from the start.  The display did not "dance" between "error" and displaying temperature, so I suspect it only happens to new tips.  This is somewhat confirmed that I swapped tips hot for the second tip that came withe unit and that tip did cause the display to "dance" until it finally settled, just like the first tip.  Other than the handle not having the positive feedback to let me know the tip was seated, the handle works well.  Pushing the tip in until it stops seems to work.  There's no disconnection while waving it or when I tested the tip temperatures, about the closest to soldering I have done with this set, yet. 

A mini-review of the soldering station itself, since I had some time to look through the menus and test out the interface some.  I will admit, I need to d/l the manual and read through it, the interface is NOT user friendly.  In my shop, since I do a lot of woodworking projects, painting, general mechanics stuff, I prefer to have as few buttons on things as possible to press because my hands are frequently dirty with glue, oil, paint, etc. so the fewer buttons on things the better.  However, I think this unit could use a couple of buttons to take some relief off the push/rotary dial.  I mean pushing in and turning left or right while holding the knob in is kind of a pain.  Having a "Back" button to back out to the main menu would be great rather than holding the knob pressed in for several seconds to accomplish the same thing.  As pointed out in another thread, it appears under the Tips menu that the firmware supports JBC tips.  If that is the case, and the tip numbers that I suspect are JBC tip numbers are in fact JBC numbers, then all those tips are just jumbled together, so you have a fairly long list to scroll through with no order, although most T12 tips seem to be grouped together, there are the suspected JBC tips between the groups of T12 tips.  KSGER should have added submenu's and grouped the T12 tips in one menu and the JBC tips together in another menu.  And a third menu option for keeping  the user defined tips settings in.  Anyway, other than those nit picks, the unit seem to work well.  As mentioned earlier, I did not actually solder anything, but checking the tip temperatures on a Hakko FG100 clone, seemed to agree with the first tip's temperature reading on the KSGER (the K tip), but the second tip was off by about 30 degrees C (DL32).  The active tip selected, however, was the default,B1, once I figured out how to change the active tip to DL32, the temperature reading was pretty much spot on (about 4 degrees C different).  I did not re-check the K tip with the active tip set to K. 
« Last Edit: September 06, 2020, 02:25:45 am by totalnoob »
 

Offline totalnoob

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #46 on: December 04, 2020, 06:29:43 pm »
Stumbled across this video of a person who has apparently tested the various KSGER T12 handles, although he only shows two in his video.  I specifically avoided the black aluminum handle because of John Salt's (another YouTuber) experience with his, but this reviewer apparently found it to be a good handle, once he fixed the assembly issues with the wiring/strain relief.

I post it here in this thread since handles were specifically discussed and for future reference in case.  Although perhaps handles might deserve their own thread.  :-//

 

Offline dreamcat4

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #47 on: December 04, 2020, 06:51:42 pm »
The carbon fibre handle, from ksger store on aliexpress. Is supposed to be the best one. It was recommended to me by somebody else. It lets you solder for longer durations, not metal, it will not conduct the heat through into your hand. Unlike the other metal ones.

.... Unfortunately the wiring seems pretty suspect on all of them. I'm sad to say.
 
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Offline bozza

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #48 on: January 13, 2021, 09:27:55 pm »
In the menu there is a desoldering option.
Does that mean that it is somehow possible to attach a desoldering gun?
 

Offline floobydust

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #49 on: January 13, 2021, 10:30:01 pm »
KSGER firmware supports a desoldering gun and pump, but not all of their controller boards have the extra hardware provisions.
I don't believe the OLED-V3.0 or OLED-V3.1 (black) boards have it. The "S" suffix is for desoldering control I think.

Controller Ve2.12S has that provision, as well as a dual-OLED option. Underneath the OLED display there are pads for two SOIC-8 mosfets like SI4800, two diodes like FR107.
Controller Ve2.1S has the mosfets/diodes/connector pads on the component side of the board.
The desoldering gun trigger switch or maybe it's a foot pedal, connects to the shake switch input.
One output is for the 24VDC vacuum pump motor, and the other for a vacuum solenoid valve.

You can also make a power mosfet board and take off the pump/valve control signals from the MCU at PB6, PB7 if you run fine wires from there.
 

Offline bozza

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #50 on: January 17, 2021, 10:54:17 am »
What is the point of having desoldering options if a pump doesn't fit into the case?

Has anyone successfully been able to use jbc handles and tips?

It would be nice if you could use both hakko and jbc handles, perhaps through an adapter.
That way you wouldn't need to buy 5 million different soldering stations.
 

Offline mastershake

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #51 on: February 24, 2021, 12:14:41 am »
here is the v3.1x hex file this has a different branding "wlida" and corrected the error with the calibration of VSM2 see attached for those that need it. this can also allow you to flash back to stock from the custom ones. other then the above changes this is identical to the ksger. this works on 101, 102 and 103 v3.0 (both styles of battery on board or attached via a lead) and the v3.1 oled boards.
 
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Offline mastershake

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #52 on: March 29, 2021, 11:48:45 pm »
new psu in the newest shipped ones. v2.05 now. they moved the one trace under the heatsink and a few other components but not to many other differences  the one larger heatsink on the one i just got in was mangled sadly warped and twisted pretty bad ill unmount it straighten it out and re mount it, there is also no paste or material on either sink on this one. ill get some pics as soon as i can.
 

Offline nanolab

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #53 on: May 06, 2021, 05:20:12 pm »
There is a problem, before this was not. The station works well, but there is a ticking sound and a green LED is blinking on the control board.
 

Offline Lemaru

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #54 on: June 04, 2021, 08:48:37 pm »
new psu in the newest shipped ones. v2.05 now. they moved the one trace under the heatsink and a few other components but not to many other differences  the one larger heatsink on the one i just got in was mangled sadly warped and twisted pretty bad ill unmount it straighten it out and re mount it, there is also no paste or material on either sink on this one. ill get some pics as soon as i can.

I haven't seen many other posts about the v2.05 PSU other than this one. I assume this means no more having to mod the heatsink to make it safe? Is there any other fixes required for this version?

Thanks
 

Offline Polter

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #55 on: June 06, 2021, 07:13:14 am »
I've received my T12 about a week or two ago. It has the new v2.05 PSU so I'll post some photos. As you can see there's no battery attached any more. Let me know if you want any new photos or clarification.
 

Offline Lemaru

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Re: KSGER T12 STM32 V3.1S soldering station
« Reply #56 on: June 07, 2021, 08:49:34 am »
I also got mine a few days ago. V2.05 PSU, but mine does have a battery fitted and stuck on top of the transformer
 


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