Wifi_Controller_-_Rev6B.zip
Design by: 14115
NodeMCU based relay board with ICD connector for breakout of pins 1-4 as well as 3.3V, 5V and ground.
Relay pins close to the low voltage circuit has milling to create air gap between the 2 sides.
power can be provided with Micro USB breakout board (or similar regulator) or surface mount micro USB port.
Components:
4x NPN surface mount transistors
4x 1206 surface mount diodes
4x 1206 100ohm resistors
4x NT72C-S10-5V