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Test & Measurement
How To Control a DC Motor with an Arduino
By connecting an L298 bridge IC to an Arduino, you can control a DC motor.
July 07, 2015
How to Build Your Own Function Generator Using Analog Devices’ AD9833
Tired of using your PC or mobile phone as a signal generator? It’s time to upgrade to a standalone one by making it yourself.
January 17, 2018
Interface a Seven Segment Display to an Arduino
For many applications, there's no need to use a more expensive liquid crystal display to display data. A simple seven-segment display is sufficient....
June 02, 2015
DIY Synth Series Part 1 — The Exponential VCO
Build a 1V octave voltage-controlled oscillator (VCO) module and create your own analogue synth sounds.
August 08, 2016
Breadboard and Program an ESP-01 Circuit with the Arduino IDE
The ESP8266 combination microcontroller/Wi-Fi modules can now be programmed using the Arduino IDE. Here's how!
October 20, 2015
Charles R. Hampton
Update the Firmware in Your ESP8266 Wi-Fi Module
Updating the firmware in an ESP8266 Wi-Fi module can be frustrating! Here's a procedure to reduce the pain.
October 28, 2015
Charles R. Hampton
How to Build Your Own Discrete 4-Bit ALU
In this project, we will build the heart of a simple 4-bit CPU, the ALU (Arithmetic Logic Unit).
August 18, 2016
How to Use a Rotary Encoder in an MCU-Based Project
Learn how to use a rotary encoder in an Arduino project. Rotary encoders are electromechanical, electro-optical or electro-magnetic devices which convert rotational motion into digital or...
November 01, 2015
Make Your Own GPS Transmitter with the HC-12 Transceiver
Create a tracking device with an HC-12 transceiver, a GPS module, an Arduino, and Google Maps.
November 10, 2016
Create a Two-Channel Remote Control with the nRF24L01+
This article will give you the building blocks needed to create your own two-channel wireless remote controller.
July 27, 2016
Using a SIM900A to Send Sensor Data to a Website
In this article, I'll show you how I used one of my SIM900A GSM modules to send temperature and relative humidity to my personal website....
February 23, 2017
How to Use the Arduino’s Digital I/O
The digital inputs and outputs (digital I/O) on the Arduino are what allow you to connect sensors, actuators, and other ICs to the Arduino . Learning how to use the inputs and outputs will...
June 05, 2015
Do-It-Yourself Soldering Station with an ATmega8
The mighty soldering iron. If you need one, want one, or just love to build stuff, then this project is for you.
May 05, 2016
How to Eliminate Ground Loops with Signal Isolation
This project explains how to isolate signals to eliminate ground loops in electronic systems.
January 29, 2016
Building Raspberry Pi Controllers Part 5: Reading Analog Data with an RPi
Learn how to read electrical signals and data from an analog device using the Step Response technique in Part 5 of the Building Raspberry Pi Controllers series....
February 09, 2016
Build Programmable Time-based Switches Using a Real Time Clock
Use DS3231M RTC alarm functions to make programmable, time-based, switches to power devices on and off at precise times.
April 07, 2016
How to Build the Brightest LED Saber in the World
The brightest blade in the world. Fluid sound effects generated in real time. Any colour, changeable on the fly. If you want to know what it feels like to hold a Lightsaber, this project is the...
October 18, 2016
How to Make an Interactive TCP Server with NodeMCU on the ESP8266
Learn how to connect your device with Linux Screen using the built-in Lua interpreter to set up the file system and connect to the network. Then, learn how to automate the scripting process...
July 22, 2015
Introduction to the RFM69HW Transceiver
This handy introduction teaches you all about the RFM69HW transceiver module using two circuits running a wireless version of the "blinky" code....
November 05, 2015
Design a Custom Microcontroller Programming and Testing Board
In this article we’ll discuss the design for a custom microcontroller programming/debug/extension PCB and we’ll look at an example project....
February 25, 2018
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