Communication between photon and arduino uno?

[nrobinson2000]

This tutorial by @rickkas7 might help.

Serial Tutorial

Serial tutorial More than you ever wanted to know about serial communications with the Particle Photon and Electron. Updates to this document are here: [https://github.com/rickkas7/serial_tutorial] (https://github.com/rickkas7/serial_tutorial) USB serial The USB serial provides a way for the Photon/Electron to send data to the computer across the USB connection. Often this is used for debugging messages. For example: int counter = 0; void setup() { Serial.begin(9600); } void loop() { Ser…