With Opto-pi, there is not an electrical connection between the Raspberry Pi and connected loads (motors, relay coils, etc.) or input signals. Opto-pi uses light to isolate the 8 digital GPIO pins.

Posted in Raspberry Pi Tagged gpio, power supply, RPi ← Open Source Brushless Motor Controller Homebrew 68k Extravaganza → ...

I have built all sorts of practical Raspberry Pi projects, but sometimes you just want to have a little fun. That is ...

A new Raspberry Pi case has been created to accommodate your bare Raspberry Pi mini computer board. Which has been laser cut from acrylic and even has light pipes fitted for you to be able to see ...

Most GPIO capabilities become user-friendly by code libraries written to simplify options, but some simplifications are built right into the Raspberry Pi GPIO pins themselves.

If you’ve ever wanted a simple, automated way to schedule pet feeding reminders or alerts, the Pico 2 W can help. This project involves using a small servo to trigger a chute, latch, or gravity-fed ...

The Raspberry Pi was a fairly revolutionary computing device when it came on the scene around a decade ago. Enough processing power to run a full Linux desktop and plenty of GPIO meant almost ...

Another component you'll need for a straightforward LED sign build is a Pi HAT. A Pi HAT is a term used to describe additional hardware attached to the top of a Raspberry Pi unit.

For the Tx, with the pins facing you, attach the Raspberry Pi GPIO 0 to the leftmost pin, 5V to the middle, and ground to the right pin.

The new Raspberry Pi 500 computer keyboard now includes the same features and performance upgrades of the Raspberry Pi 5 microcomputer, including improved dual display support.