1. Remote upload code(Hex file) to Arduino over Rpi with auto reset - Install Wiringpi - Install Avrdude - Create a folder Arduino on home/pi - Copy file hex to this folder by using WINCSP - Create a file such as upload.sh with content like this #!/bin/bash gpio mode 26 out gpio write 26 1 gpio write 26 0 gpio write 26 1 gpio mode 26 in /usr/bin/avrdude -q -V -D -p atmega328p -C /etc/avrdude.conf -c arduino -b 57600 -P /dev/ttyAMA0 -U flash:w:$1:i We use GPIO26 for DTR pin to reset Arduino Remember replacing parameter MCU type for your case 2. GPIO Raspberry and WiringPi pin Map  |