when you have bricked your Arduino

 

you are lucky if you have a Arduino based on the ATmega32U4.

take another Arduino and connect the pins like that

 

  • Pin 16 or MOSI on ISP programmer to pin 16 on target Pro Micro
  • Pin 14 or MISO on ISP programmer to pin 14 on target Pro Micro
  • Pin 15 or SCLK on ISP programmer to pin 15 on target Pro Micro
  • Pin 10 on ISP programmer to RST pin on target Pro Micro
  • VCC on ISP programmer to VCC on target Pro Micro
  • GND on ISP programmer to GND on target Pro Micro

select from examples, the sketch ArduinoISP

Upload the sketch to your working Arduino.

 

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