CFW for KSGER/Quicko STM32 Soldering Stations

[DavidAlfa]

Unless you have a terrible wires for ground, it should have very low-impedance.
But not completely impossible:
3.3V throught4.7K draws 702microamps, if the ground wire+connector adds 30mOhms, it would drop 22uV, just enough for 1ºC offset.

Your station reads 12 when the switch is closed.
ADC 12 = 9.67mV, amplified x250, so input is 38uV.

I remember the chinese JBC handle having pretty thin wires.
My quicko has 2 wires and 2 pins in the GX-12 connector for gnd 

Try replacing the 4.7K pullup with 47-100K and see what happens.


But that doesn't explain the strange behavior in Rick's station. It reads low.

[wickated]

I remember the chinese JBC handle having pretty thin wires.

u kidding me//

nvm i found  the case, i actually added RC for stand cuz got bad contact bounce. that was adding those microvoltage to opa input.

[ricktendo]

He meant the calibration thing where you capture the ADC value with a cold tip. According to his idea, shake sensor would allow current to pass through opamp when closed. That noise would then be mistaken as temperature reading. My v1.5 doesn't do that but it's a different design from your v3.

I also have a 1.5 and I can confirm it is not affected. I have a 2.1s that is affected but not as severe, you have to shake the handle really hard (which is why I did not catch this before.) Now that I purchased a 3.0 its more noticeable.

I made a video of the 3 boards, 1.5 (bottom,) 3.0 (middle,) and 2.1 (top.) You can see from the video the 3.0 all I need to do is tilt the handle up, the 2.1 I have to shake it really hard

https://gfycat.com/orangesilveriberiannase

[wickated]

poor pwm/ldo i guess. i would also check/swap handles

[DavidAlfa]

I remember the factory fw also went a bit crazy when the tip was removed, switching between temperature screen and ERROR?
I guess it needs the 1M pullup resistor between 3.3V and T+?
The circuit is almost identical in all boards, so it's strange.

[ricktendo]

I remember the factory fw also went a bit crazy when the tip was removed, switching between temperature screen and ERROR?
I guess it needs the 1M pullup resistor between 3.3V and T+?
The circuit is almost identical in all boards, so it's strange.

I have tested all 3 of these handles and issue exists with all 3

David you think we can use IDE to debug the issue?

[DavidAlfa]

Without the tip, the amplifier input is floating, reading noise.
There isn't much I can do fix that, it's a bad design.
Try increasing IRON/Err time to 1.0s to increase the error timeout and prevent the issue.
Otherwise, try the resistor pullup mod, I did it to my Quicko and made the detection perfect.

[ricktendo]

Without the tip, the amplifier input is floating, reading noise.
There isn't much I can do fix that, it's a bad design.
Try increasing IRON/Err time to 1.0s to increase the error timeout and prevent the issue.
Otherwise, try the resistor pullup mod, I did it to my Quicko and made the detection perfect.

Increasing to 1.0 did the trick, can you share a picture of your modded board and point out where/how to mod my 3.1 board?

[wickated]

whoops, i forgot about 1m pullup since i always thought its like a default option

[DavidAlfa]

I didn't see any board with the pullup resistor from factory.

It's really simple: 3.3V -> 1M -> T12+ pin
Also can be done with a 10M resistor between the mosfet drain-source pins.

[wickated]

i cant add pics in pm so

[DavidAlfa]

No, don't connect resistor directly to the amplifier input! Must be connected before the 4k7 resistor...which goes directly to the T12+ pin.
I'd to the 10M resistor between the mosfet, much easier.
Even easier, just between 24V and T12+.

[ricktendo]

Will it matter if I use carbon film resistor vs metal film?

Thanks

[wickated]

thats just resistor, sure no difference. smt or tht

[SomeUsername]

how does this one seem?
it's a 955 with an stm32 microtontroller, and the store wants another 3 bucks or so for the power plug, also comes with the metal handle which I've heard from some people is relatively nice

https://www.aliexpress.com/item/1005001608493682.html?spm=a2g0o.store_pc_allProduct.8148356.1.73da3f26PsDQcX

[lfldp]

do anyone knows soldering station to manage T12 + T210 110 115 tips all in one with enough power 130W ? except these audio amplifiers https://www.aliexpress.com/item/1005003653221929.html?spm=a2g0o.productlist.0.0.4d386b5fvtxXWU&algo_pvid=1ab03050-75a0-4205-85c8-0265b1cf16e0&algo_exp_id=1ab03050-75a0-4205-85c8-0265b1cf16e0-12&pdp_ext_f=%7B%22sku_id%22%3A%2212000026662183563%22%7D&pdp_pi=-1%3B494.68%3B-1%3BPLN+16.27%400.230000%3BPLN%3Bsearch-mainSearch

https://www.aliexpress.com/item/1005003471618661.html?spm=a2g0o.productlist.0.0.138072bb0peaCX&algo_pvid=a394391f-cc93-4089-8718-d9066082186d&algo_exp_id=a394391f-cc93-4089-8718-d9066082186d-46&pdp_ext_f=%7B%22sku_id%22%3A%2212000025939465360%22%7D&pdp_pi=-1%3B377.95%3B-1%3B-1%400.230000%3BPLN%3Bsearch-mainSearch

[jbnl]

Any body has seen this one ?
https://nl.aliexpress.com/item/1005002965912186.html?spm=a2g0o.productlist.0.0.14434502ShEDhW&algo_pvid=9135628f-0c67-4c29-aa8d-5e1df964d92d&algo_exp_id=9135628f-0c67-4c29-aa8d-5e1df964d92d-50&pdp_ext_f=%7B%22sku_id%22%3A%2212000025085328578%22%7D&pdp_pi=-1%3B56.37%3B-1%3B-1%40salePrice%3BEUR%3Bsearch-mainSearch

Is also a T12 soldering station.

[ygi]

Looks pretty bad to me. First and foremost, it's not compatible with David's firmware. Then there's the rest: handle is just a piece of hard plastic with a long tip to grip distance and a 6 pins connector to make it annoying to replace. Interface looks terrible (from seller's video), screen's big but is a segments display, station and stand are made of plastic, it's rated for 65W so it probably can't even max out T12 tips and it's not even cheap. Why would anyone pick this Bakon instead of any other T12 station?

[lfldp]

Looks pretty bad to me. First and foremost, it's not compatible with David's firmware. Then there's the rest: handle is just a piece of hard plastic with a long tip to grip distance and a 6 pins connector to make it annoying to replace. Interface looks terrible (from seller's video), screen's big but is a segments display, station and stand are made of plastic, it's rated for 65W so it probably can't even max out T12 tips and it's not even cheap. Why would anyone pick this Bakon instead of any other T12 station?

i already buyed this soldering station few weeks ago and...
good things:
- large display
- x3 buttons this is what i like instead of rotary encoder
- this station detecting T12 tips quite faster than ksegr t12 (i mean when you swap soldering tip)
- it is small

bad things:
-no standby , this station have output drilled for standby? but it is not connected
-buzzer is not soldered to PCB

i did make test by my wattmeter and on ksegr it noticed 80W while on BAKON BK969D just 60W so this is big difference

[Creo]

Hello all and Happy New Year!
I had Ksger HW 2.0, SW 2.09, STM32 102C
Flash original firmware on 2.12 from https://github.com/deividAlfa/stm32_soldering_iron_controller/tree/master/Original_FW/KSGER/Firmware%202.12%20(14.05.2017)
and Info it became: HW 2.0, SW 2.12
Everything worked.
KGSER oled screen connection: 6 pin (SPI) = v3.x
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I wanted to flash your new V3. firmware: https://github.com/deividAlfa/stm32_soldering_iron_controller/tree/master/BOARDS/KSGER/%5Bv3%5D/STM32F101
and got on the screen:
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FLASH ERROR
SYSTEM HALTED
Use btn to reset

i tried V2 version: https://github.com/deividAlfa/stm32_soldering_iron_controller/tree/master/BOARDS/KSGER/%5Bv2%5D
and got a black screen.
I wanted to flash back the original (2.12 - 2.11) - and got a black screens.

Please help me start the station.

[Creo]

Hi!
I figured it out myself.
We helped me solve the flash firmware mode: Automatic mode, see pic.

[DavidAlfa]

Happy New Year everyone!

How did you flash it on first time to make that error happen?
The error means the flash erase or write veritification mismatched the expected values.
Maybe there was some flash protection bit in the option bytes?

Oh and never skip verification... it's a bad idea!

[Creo]

I flashed it according to the instructions (from YouTube in russian) for updating the standard firmware and installed 2.12 successfully instead of 2.09
then activated new 2.12 firmware.
And then I found out about your firmware
And I really wanted to try
And by standard instructions got a brick

[DavidAlfa]

Maybe you followed "update" instructions, those that erase the stm32 partially.
That's when you're already on this fw, to update to a newer version without losing your settings.
But when coming from factory firmware, it must be fully erased.
I will clarify that section further.

[Creo]