This project is a Very Simple "Beat Frequency Oscillator" type of Metal Detector.

The approach to controlling a DC motor and LED makes the project interactive, ‎allowing Node-RED to control various devices in your home or workshop.

A simple and robust homemade security system can be made with a handful of components and basic programming.

Building and controlling a fan is breeze with a Raspberry Pi, a dash of Python programming, simple circuitry and the AdafruitIO Internet of Things dashboard.

Combining a simple external circuit with the Raspberry Pi to create a simple door-locking mechanism that takes advantage of the speech recognition library.

As electronic designs get smaller, through-hole components become less common in newer products in favor of surface mount packages. Being able to solder surface mount yourself by hand is a very valuable skill.

This guide covers how to use a Raspberry Pi to control a fan based on the current temperature.