Digital Potentiometers, or “DigiPots”, are exactly what you think they are – potentiometers whose wiper position is set using a digital signal instead of a mechanical shaft or slider.
Today we will see how to use Digital Potentiometers and we’ll build a couple of projects. We’ll build a remote-controlled audio volume system and a variable power supply whose output voltage can be set with a web-based interface.
Let’s build a solar camera and take pictures of the Sun! We will use a Raspberry Pi HQ Camera with a Celestron EclipSmart Solar Telescope to stream video and images of the Sun.
And if you don’t want solar pictures you can use any regular telescope and enter the wonderful universe of Raspberry Pi Astrophotography!
It’s time we took a fresh look at infrared remote controls, so here is everything you need to know about using IR remote controls with microcontrollers.
Learn how to receive, decode and send IR signals, including ones from those hard-to-decode remotes like air conditioners.
Examples with both an Arduino and ESP32.
Mecanum Wheels are unique wheels that allow you to propel a vehicle in any direction. Not just forward and backward, but sideways and diagonally as well.
Today, we will build a robot car that uses Mecanum Wheels. Our vehicle will also have a remote control with a joystick, a TFT display, and a rechargeable battery.
Linear DC Power supplies are no longer as common as switching supplies, but they are still a good choice for many applications.
Today we will learn how linear power supplies work, how they differ from switching power supplies, and how to use voltage regulator modules.
We will then construct a DC Power Supply suitable for use on the workbench.
If you have ever required a very big servo motor, or one that rotates at an angle other than 180 degrees, then this article is for you! Today we will take a Seeeduino XIAO and a potentiometer and use them to construct a custom servo motor, using a DC gear motor.
This is a project I’m doing in tandem with Jeremy Fielding and his “self-driving go-kart” build.
Today we will learn how RC Remote controls work, and how we can use them with an Arduino.
After learning two different ways of interfacing with the Flysky receiver, we will build a small robot car.
Our car will have two different modes – Normal & Spin. You’ll have to read the article or watch the video to find out what that means!
Today we will be putting together a robot car based upon the popular ESP32CAM module.
Our car will have a WiFi remote control and will stream video, so you can see where you are going when you drive it!
Here is a complete and detailed guide to building a Linux-based Developers Workstation from scratch!
Starting with a “barebones computer” kit we will put together a Developers Workstation that has 15 essential software applications, plus a few custom tweaks.
Make sure to download the “Cheat Sheet” to simplify your build.
Today we will construct a simple bench power supply that has both fixed and variable output voltages. It’s a great project for beginners and useful enough for an expert!
Our design will make use of popular buck converter modules and an unused power “brick” from an old laptop computer, which you should have no problem obtaining.