Arduino, IoT, Productivity Hacks.
board highlighted in yellow. Power 5V Digital #8 Digital #9 Digital #11 Power GND Arduino UNO Rev 3 Setting up the SainSmart 2-channel relay module We have to jumper the SainSmart relay module in order to coincide with the Firgelli Automations linear actuator. There is a blue jumper from JD-VCC to