David H. Bronke wrote 08/13/2019 at 01:17 0 points

Has anyone successfully flashed one of these chips? I picked up a couple of these Pro Mini clones from AliExpress: https://www.aliexpress.com/item/32954944560.html?spm=a2g0s.12269583.0.0.86a0619bj6M0VB

So far, after installing the "drivers" from https://www.pcboard.ca/arduino-uno-r3-wavgat-setup , I've tried flashing them with:

- An FTDI board (https://www.aliexpress.com/item/714576465.html?spm=a2g0s.9042311.0.0.27424c4dTUyrZr - the red one): I was able to get the flash portion to "work" (by which I mean the write seemed to succeed, but verify failed, being unable to read the flash) by using this command: avrdude -v -c arduino -P /dev/ttyUSB0 -p atmega328p -b57600 -Uflash:w:build/rt-soldering-station.ino.hex:i

- A USBtinyISP clone (https://www.aliexpress.com/item/32963596310.html?spm=a2g0s.9042311.0.0.27424c4dTUyrZr): Unable to get it working at all; gets "avrdude: initialization failed, rc=-1", which doesn't help diagnose things at all. Used command: avrdude -v -c usbtiny -p atmega328p -Uflash:w:build/rt-soldering-station.ino.hex:i

- The trusty old BusPirate (http://dangerousprototypes.com/docs/Bus_Pirate_AVR_Programming): Tried with both "buspirate" and "buspirate_bb" (bitbang) modes, and neither worked.

So far, nothing works. Has anyone actually been able to flash anything to one of these chips? If so, how?