Saturday, 13 April 2019

arduino - How to use a Raspberry Pi Pin(3.3V) to reset a ATMEGA328(5V)


I have a ATMEGA328(AVR) connected to a Raspberry Pi(RPI) via serial using a level shifter.


The AVR has the Arduino Bootloader installed and I would like to program it via serial.


What would be the best way to connect the AVR reset pin to the RPI GPIO pin 4?


(Keep in mind that the AVR reset pin has a 5V pull-up resistor connected to it.)




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