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| TC1 lcr-meter transistor-tester fix |
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| Nokeshas:
Hello colleagues, I have this TC1 board variant with atmega328pu and since accidentally put charged capacitor to 1-3 i fried atmegas inputs and everytime it show that any device is a small voltage battery. I have one atmega328pu chip laying around... maybe someone have original firmware from that atmega chip. And can somenone explain how to program that atmega328 with that firmware/program if i have only ftdi usb programer. Sorry for stupid questions, but in this kind of jobs i am noob. Thanks in advance. |
| madires:
--- Quote from: Glide on May 11, 2023, 12:12:10 pm ---I think is busted, now is showing 330pF 1-3 without nothing connected. --- End quote --- Does removing the SRV05-4 help? Otherwise the ATmega could be toasted. |
| madires:
--- Quote from: Nokeshas on May 11, 2023, 12:43:00 pm ---I have this TC1 board variant with atmega328pu and since accidentally put charged capacitor to 1-3 i fried atmegas inputs and everytime it show that any device is a small voltage battery. --- End quote --- Same advise, remove SRV05-4 (U2) and check again. If this doesn't help replace the ATmega and go for one of the two OSHW firmwares. Your specific model doesn't need the STC15L104W mod. |
| Nokeshas:
Hi, thanks for answer. I have tried to remove U2, but the same result... detecting only low voltage battery.(that is not connected at all) Regarding your suggestion to swap those atmega328. Where to get those firmwares that you mentioned (tried to search in this thread, but with no luck). And another question. I have this thing FTDI: (picture attached) can i do reprogram atmega328 with that thing and some tutorial would also be awesome ;) I am not familiar with programming these... :( |
| madires:
Firmwares and documentation: - https://github.com/kubi48/TransistorTester-source - https://github.com/madires/Transistortester-Warehouse Regarding the FTDI please search for 'avrdude FTDI'. And there are also tons of websites explaining the AVR toolchain and how to flash an ATmega. |
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