NodeMCU + Relay Case

thingiverse

Protecting a NodeMCU board and relay from a short circuit in your PC is a straightforward task. It enables remote control of your PC by using the relay as a power switch alternative. The program on the NodeMCU board connects to your local MQTT broker, triggering the relay for one second upon message publication. OpenHAB defines rules, while an Amazon Dash button powers on the PC each time pressed with the simple binding in use. Comment if you need the .ino file.