[Dalton63841] started this project by trying to use the UART TX pin, but this turned out to be a dead-end. He decided instead to use an Arduino to monitor the 3.3V power rail on the Pi.

Raspberry Pi and Arduino get mentioned a lot in DIY projects, but they aren't interchangeable. It's important to know which one is better for different tasks.

An Arduino is a microcontroller — a single board designed to control something and perform a specific task. Unlike a Raspberry Pi, you won't find anything resembling an operating system here ...

The Ultimate Arduino Coding Power Course Bundle can put you well on your way to a coding and programming career with 59 hours of courses covering Raspberry Pi, Arduino, ROS1, and ROS2.

Humble's microcontroller ebook bundle shows you how to build wildly inventive projects with the popular Raspberry Pi and Arduino. By Alexandria Haslam Feb 22, 2019 8:06 am PST Image: Brad Chacos/IDG ...

Old laptops are easy to find and many have a trackpad with a PS/2 interface hardwired into the guts of the laptop. [Build It] wanted one of those trackpads for use in the DIY Raspberry Pi laptop he… ...

This means that while Raspberry Pi can function as a fully-fledged mini-computer capable of running multiple apps at once, while Arduino can only handle limited input and output controls.