Make Your Own Arduino Header Pins. 61 Comments . by: Al Williams. December 13, 2016. Title: Copy. ... He created two simple 3D printed jigs that let you bend an 8-pin header.

Basic sketch for Arduino reprogramming of the SONOFF device. After soldering a 5 pin header onboard and connecting your 3.3v programmer up, just flash using the Arduino studio. This sketch listens to ...