Electronics
Electronics is a fun hobby that you no longer need to be a rocket scientist to enjoy. The availability of low-cost modules and test equipment has made this a great hobby for people of all ages.
Arduino
Arduinos are inexpensive microcontrollers that come in all sizes! With an assortment of Analog and Digital inputs and outputs combined with a simple programming language, they are the ideal choice for all kinds of projects.
ESP32
The ESP32 is an inexpensive yet super-powerful 32-bit microcontroller that is loaded with advanced features. With built-in WiFi and Bluetooth BLE, the ESP32 can be the brains of your next Sensor, Robotics, or IoT project!
Raspberry Pi
The Raspberry Pi is a microcomputer with a micro price. But don’t be fooled by its size, it packs a powerful punch!. Media Center, Home Control, Robotics, or Desktop Replacement – you can do it all with the Raspberry Pi.
-
Controlling DC Motors with the L298N Dual H-Bridge and an Arduino
March 11, 2017| 152 CommentsControlling DC Motors is an essential skill for constructing robots and other hobby projects. An easy way to control DC motors is to use an L298N H-Bridge, an inexpensive component that you can buy from several sources. Fear not if you’ve never heard of the L298N or if you don’t know what an H-Bridge is - in this article I’ll show you everything you need to know to start making things move with an Arduino. We’ll even construct a simple Robot Car that you can pilot using a Joystick.So let’s get our motors running and learn all about the L298N H-Bridge! -
Getting started with the ESP32-CAM
May 24, 2020| 103 CommentsToday we will look at the amazing ESP32-CAM module from A-Thinker. This 10-dollar module features a 2MP camera, microSD card socket, WiFi, and Bluetooth.Unlike other ESP32 modules this one does not have a USB port, so you'll need to use an FTDI adapter to get it working.In this article I'll show you how to work with the ESP32-CAM and how to resolve common power and antenna issues. -
Wireless Joystick for Arduino Robot Car with nRF24L01+
March 10, 2018| 89 CommentsLearn to use the popular nRF24L01 radio modules with an Arduino, using the RadioHead library. In this article we will conduct several experiments sending data between two Arduinos with the nRF24L01. We will then take what we have learned and build a wireless joystick controller for our robot car! -
Stepper Motors with Arduino – Getting Started with Stepper Motors
February 10, 2018| 85 CommentsStepper motors are used in a variety of devices ranging from 3D printers and CNC machines to Blu Ray drives, cameras and even analog clocks. In this article you’ll learn how steppers work, the difference between bipolar and unipolar stepper motors and how to control both of them with an Arduino. -
Convert an ATX Computer Supply to a Bench Power Supply
February 2, 2019| 82 CommentsA Bench Power Supply is an essential component for any serious electronics experimenter. But a good supply with multiple output voltages and a high current capability can set you back some serious cashIn this article we'll look at an alternative - using an old computer ATX power supply as a high-performance workbench power supply.It's a simple project that can give you a highly capable piece of equipment for next to nothing