Control USB Relay with Android Phone (No PC, No Coding)
Control a USB relay directly from your Android phone.
No PC, no Raspberry Pi, no programming required.
This video shows how to control a USB relay module using an Android phone and a simple USB OTG cable.
Just plug the relay into your phone, open the free Relay Controller app, and switch the relay on or off instantly.
For remote control, simply scan a QR code and control the relay from any device using a web browser — no app installation required.
Works on iPhone, Android, PC, Mac, or tablet.
USB relay hardware is required.
Perfect for DIY projects like lights, pumps, irrigation systems, fountains, or custom automation.
App website: https://relay-controller.com
Android app: https://play.google.com/store/apps/details...