Does anyone know a socket model number for the STM32 F103 RCT6 - 64 pin, 4x 16 at about 0.25mm spacing...
I've been wanting to do this project for a bit but have a few others going on... so I am thinking of purchasing a few of these chips so that I can desolder the one on my replacement KSGER station, solder the socket on and cut a hole in the top, or side, of the case so it sticks out so that I can swap chips whenever...
Edit: I have board marked OLED-V3.0, in software it reports 3.0 / 3.1 or something along those lines.
I did get pretty lucky with my replacement KSGER - the stm32 chip I have actually has more memory than the original. I do want to see if I can find a way to read the data off the chip, though so I can restore it... but until then I think a socket would be the best bet so I can continue to use it....
If I can't find a inexpensive socket ( some I've seen are around $100 which is crazy ) I could just do a breakout board and then solder the chip to another and just plug the pcb into the breakout and do it that way... It would mean a much larger area for all the pins unless I can see if there is an old cpu socket and cpu I can rip apart and use... that would actually look kind of nifty... But I'd rather have something smaller.
Edit2:
From the previous message by Cuboy quoting a message from DavidAlfa - If you need to know capacitor values, etc... let me know... especially if you have the same board as me... I have a DER DE-5000... I'd probably have to remove the battery - honestly I'd actually be ok with added a header for it... But, it may work without having to undo that... Let me know what readings and what frequency and the position...
Edit 3:
Question: Does anyone know the OLED Model number off my particular KSGER unit? ie: is it color, or just single color? If it is color, I wonder why the colors aren't being used. It would make it much more readable.
Great! I was about to make my station land somewhere in between Germany and Russia!
Hello DavidAlfa,
Thanks for the quick reply.
The iron.pdf schematic matches my board with respect to WAKE (pin 17) , TEMPAMB (pin 16) and TEMPIRON (pin 12). I will try reversing WAKE and TEMPAMB tonight and post pictures.
Roughly what signal level should I expect on the OP input during sleep and operation with a C245 tip? With the current input level to the OP, the TEMPIRON (tip temp) saturates at 3.3 V during the short pulses in sleep. I may have messed up something when modifying the board or connecting the C245...
Under system/contracts maybe a better option would be to add just a scale from 1-10 instead of showing 255,230,205,......
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Could the pin setup of the MCU be swapped somehow?
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Isn't this a hacking forum? Why I'm not seeing anyone trying adding more caps, showing scope waveforms...?
These ksger don't put a cap in the VDDA pin, neither close to teh amp pins, which is absolute cost-saving crap.
Start by adding 1-10uF ceramic caps there, with 100nF in parallel to improve high frequency response.
Then replace the led with a 1n4148 in direct polarization to gnd, to clamp the voltage to ~0.7V.
That diode is very fast (<4nS) and should help with the spikes.
I would start trying this, hopefully will kill those nasty spikes:
Is that sss1309 i2c or spi?
The current i2c code is extremely hacked for best performance.
I thought it was going to fail in a lot if stations but seems it's stable, nobody complained.
You should have reported the issue when you found it. Now.. who knows what was the last working version!
Although there are people using 2.42" Oled without issues.
You could start by simply opening the .ioc file and increasing the spi prescaler to something much higher, to discard a frequency problem.
Will be mostly the same, just less high frequency noise, but doesn't justify the high cost.
Adding proper VDD filtering will do just as fine, see mine
Are you connecting the display through wires? High frequency will mess things up.