Raspberry Pi: Control Relay switch via GPIO
![Raspberry Pi: Control Relay switch via GPIO](https://tutorials-raspberrypi.com/wp-content/uploads/2015/08/51UIh5JWRoL.jpg?ezimgfmt=ng%3Awebp%2Fngcb1%2Frs%3Adevice%2Frscb1-2)
![](https://andino.systems/user/pages/14.legacy/01.programming/02.nodered/01.control-relays-and-inputs/gpio-example-node-red.png)
Control Relays & Inputs
![](https://cdn.cnx-software.com/wp-content/uploads/2023/02/Raspberry-Pi-Pico-8-relay-board.jpg?lossy=0&strip=none&ssl=1)
Control 8 relays with the Raspberry Pi Pico using PicoRelay8 or Pico-Relay-B - CNX Software
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