3 ms·

I mirrored the pinout of an AVR once and spent a few hours debugging why ISP wasn't working (so I unsocketed it for programming) and all the pins were wrong. It

I mirrored the pinout of an AVR once and spent a few hours debugging why ISP wasn't working (so I unsocketed it for programming) and all the pins were wrong. It worked just fine pulling ground and Vcc from the I/O pins just opposite. These are of course fairly low-power 1.8-5 V devices, so when run on 5 V there is a huge margin for the supply voltage.

phaker 5y ago
You were powering it through the protection diodes. Some 10-15 years ago someone built dirt simple radio tags this way. Just a microcontroller, with a capacitor and an antenna trace connected to some io pin. I loved that hack.
- myself248 5y ago
  https://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/ https://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/
  - abraae 5y ago
    Incredible hackery.