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CFW for KSGER/Quicko STM32 Soldering Stations
itscoldoutside:
I noticed the custom firmware has a note 'Dedicated Stand input where supported (T12-958 v2 has this).' does anyone know how this works (magnet?) or if you need a special stand.
DavidAlfa:
Detected when that pin is connected to ground, left floating when the handle is released.
wasyoungonce:
Morning Gents...well it is here
Question on T12 NTC thermistor in the handle. I read the CFW manual regarding NTC thermistors,
https://github.com/deividAlfa/stm32_soldering_iron_controller/blob/master/Readme_files/Operation.md
My issue is their settings in sub-menus. I'm using "NTC MF58 type. MF58-103F3950/10K 1%. It doesn't have a temp curve. Yes i've seen Which I take as 10K at 25 degrees C and beta 3950
I looked at beta calculation on web site but am confused why i need to put in two values and confused as to "high, Res and low, as well as 2 beta values"!
https://www.ametherm.com/thermistor/ntc-thermistor-beta
I have it as "pull up"
res: 12.6K
High: 40K
beta 3950
low 2.2K
beta 3950
So why do I put in an upper and lower resistance and a beta for both? I assume the first "Res" is resistance at 25C.....~ 12K...but i do not know the other values I guessed, and no idea should I use the same beta for low rx......what temp is the low Rx set to? Alternately what is the high Rx???
Any help appreciated Do I measure the rx at 25C and put this as "RES"? Do i measure the Rx at 0C and use this as low Rx? Do I use the same beta for both? What is the high Rx?
I have these on Open source controllers by Clytle374, but it uses the nice CFW firmware from deividAlfa.
Sorry if its a stupid question but I'm getting 39C ambient on one iron and 25 on another.I think they offset the tip temp??
Any advice appreciated...loving the T12s
cheers
Bren
edit: Should I solder in a backup battery as I read it saves settings to EPROM in processor and its better to save in SRAM (as read/writing to EPROM has limited cycles)....not sure my Open source has SRAM! Just checked...no SRAM so that's moot!
cheers again
DavidAlfa:
Read the manual properly, that's to automatically switch between NTCs when having i.e. 10K in one handle and 100K in other.
For normal operation disable NTC Detect, use only one NTC.
39°C is very possible after 10-15min of soldering, that's not the ambient temperature but the cold side of the T12 connection in the handle.
Some stations don't have it in the handle, but in board.
Depending on the power regulator circuit, the board can get pretty toasty!
marck120:
Sorry for the trivial question, it's certainly an old topic already discussed, some KSGER/Quicko stations have been updated with the ground connected to the case, but the tip is not connected to ground, right ? A tip not connected to ground, what problem can it cause ? Can electrical discharges damage the components that are being soldered ?
Some add the ground wire, but some stations already have the ground wire on the controller.
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