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From VHDL Code to Real Hardware: Designing a Finite-State Machine

From VHDL Code to Real Hardware: Designing a Finite-State Machine

Learn how to implement finite-state machines in VHDL by creating a 4-bit binary counter. After compiling, it will run on an Altera CPLD development board connected to a custom PCB with input switches and an LED display.


From VHDL Code to Real Hardware: Designing an 8-bit ALU

From VHDL Code to Real Hardware: Designing an 8-bit ALU

In this project we create an 8-bit arithmetic logic unit (ALU) in the VHDL language and run it on an Altera CPLD development board connected to a custom PCB with input switches and LED display.


Hardware Evaluation of a Custom Programmable Wi-Fi Controller: The WiCard

Hardware Evaluation of a Custom Programmable Wi-Fi Controller: The WiCard

This article explores the schematic design and basic features of a smart programmable wireless controller module I designed: the WiCard.


How to Add Bluetooth 5 to a Project with a GT-tronics BLE5 Module

How to Add Bluetooth 5 to a Project with a GT-tronics BLE5 Module

This article demonstrates a solderless-breadboard compatible carrier-board for a pre-certified BLE4 or BLE5 module made by GT-Tronics. Use it to experiment with your own BLE5 compatible designs.


Projects Apr 04, 2018 by Mark Hughes
How to Build a Particulate Matter Detector for Air Quality Measurement

How to Build a Particulate Matter Detector for Air Quality Measurement

Use a Honeywell particle sensor to measure 2.5 µm PM and 10.0 µm PM concentrations in your environment.


Design a Custom Microcontroller Programming and Testing Board

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.


Projects Feb 25, 2018 by Robert Keim
The FitByte: How to Make an ATtiny85 Powered Activity Tracking Wearable

The FitByte: How to Make an ATtiny85 Powered Activity Tracking Wearable

This is a protoype of a fitness wearable device designed to vibrate when it detects stagnation.


Projects Dec 13, 2017 by Demsey Kirkwood
Build a Temperature and/or Humidity Controlled Fan with a Picaxe 08M2 Microcontroller

Build a Temperature and/or Humidity Controlled Fan with a Picaxe 08M2 Microcontroller

A Picaxe 08M2 microcontroller and an HIH6030 sensor team up to easily control a ventilation fan using temperature or humidity or both.


How to Use a Robot to Record and Transfer Audio Signals

How to Use a Robot to Record and Transfer Audio Signals

This article provides detailed information on sampling audio signals and transferring the data to a PC for analysis.


Projects Sep 15, 2017 by Robert Keim
Troubleshooting Tools for Your Next Bluetooth LE Project: Ubertooth and the Nordic nRF Sniffer

Troubleshooting Tools for Your Next Bluetooth LE Project: Ubertooth and the Nordic nRF Sniffer

Bluetooth LE was designed with the IoT in mind. Here are some options for troubleshooting your next Bluetooth LE project.


Projects Jul 14, 2017 by Mark Hughes
Breadboarding and Programming the ATmega328P & ATtiny45 in Atmel Studio 7

Breadboarding and Programming the ATmega328P & ATtiny45 in Atmel Studio 7

In this project, we'll build circuits for programming two different Atmel microcontrollers and we'll discuss the necessary software setup.


“Everything is Better with Bluetooth”:  Add Your Own Custom Bluetooth LE to Your Next Project

“Everything is Better with Bluetooth”:  Add Your Own Custom Bluetooth LE to Your Next Project

Bluetooth low energy (BLE) is designed to intermittently transmit information using a limited amount of power. This article provides the building blocks that allow you to add BLE to your projects for $5 (plus a one-time purchase of a $15 programmer).


Projects Jun 28, 2017 by Mark Hughes
Build an Arduino 101 Data Logger with the TI SensorTag

Build an Arduino 101 Data Logger with the TI SensorTag

Use an Arduino/Genuino 101, a TI SensorTag, and an SD shield to build a BLE multi-sensor data logger that records temperature, humidity, atmospheric pressure, ambient light and more.


Add Voice Commands to Your Next Project with Bluetooth LE

Add Voice Commands to Your Next Project with Bluetooth LE

This project uses the Alorium Technology XLR8, a Bluetooth LE HID Implementation, and the EasyVR voice recognition module to add voice-activated movements to your next project.


Projects May 17, 2017 by Mark Hughes
Build an Arduino Multi-Node BLE Humidity and Temperature Sensor Monitor

Build an Arduino Multi-Node BLE Humidity and Temperature Sensor Monitor

Use Cypress Solar-Powered BLE Sensors, an Arduino UNO, and an HM10 BLE module to make your own multi-node temperature and humidity monitor and display.


Track Overhead Flights with a Raspberry Pi Zero Wireless, a Software Defined Radio, and FlightAware

Track Overhead Flights with a Raspberry Pi Zero Wireless, a Software Defined Radio, and FlightAware

This article shows you two ways to use a Raspberry Pi Zero Wireless to track flights in your area. It also demonstrates how it can control a 64×64 RGB matrix.


Projects Apr 03, 2017 by Mark Hughes
Capturing IMU Data with a BNO055 Absolute Orientation Sensor

Capturing IMU Data with a BNO055 Absolute Orientation Sensor

The BNO055 is an absolute orientation sensor from Bosch that combines sensor data and a microprocessor to filter and combine the data, giving users their absolute orientation in space.


Projects Mar 22, 2017 by Mark Hughes
Using a SIM900A to Send Sensor Data to a Website

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.


Controlling a Stepper Motor with an SIRC TV Remote and a PICAXE: Infrared Capabilities

Controlling a Stepper Motor with an SIRC TV Remote and a PICAXE: Infrared Capabilities

Remote controls for electronics often use IR (infrared) radiation in a very precisely coded sequence for channel surfing, volume adjustments, and more. One of the most popular codes is the SIRC (Sony Infrared Remote Code) which may be used with a PICAXE microcontroller to manage a stepper motor, or most any other electronic or electro-mechanical device.


An Introductory Project for Software Defined Radio

An Introductory Project for Software Defined Radio

Learn how to listen to frequencies on the air with nothing more than a USB dongle: first FM radio, then voice signals.


Projects Feb 02, 2017 by Christi Durham