Clone CarProg Rework for Fast Reprogramming

ECU Chip Tunning

Finally, I made a modification to my Carprog clone for fast reprogramming, if I need to do it again will not be necessary to open it again and redo all connection every time I want or need to reprogram:
I used the Carprog pins from 15 to 21, those pins are useless for the programmer or any adapter, they are disconnected:


I used a “selector” like the desktop’s pc for bios, to select the programming mode, in picture from left to right: 1, 2 3, if the jumper is placed at pins 1 and 2, the pin 55 (reset) from the AT91 is shorted to ground, preventing deprogramming or programming the MCU, if the jumper is placed at pins 2 and 3 the pin 55 is shorted to vcc 3.3v and the Mcu is placed in ERASE MODE. Without jumper the mcu is placed in programming mode:

carprog-fast-programming-3 carprog-fast-programming-4

Now is probably a waste of time, in the near future will save me some time but from now I can reflash the AT91 in less than 5 minutes. 

Update: I forgot to mention that I doesn’t need to remove the AT88SC eeprom to ERASE/REFLASH the AT91 mcu. After that the Carprog works well. This is MY OWN experience, so, If you want to do the same, do it at YOUR OWN risk.