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Build Raspberry Pi Controllers: LED Flasher

Build Raspberry Pi Controllers: LED Flasher

In this project, you'll learn how to wire an LED and flash it using the Raspberry Pi. Also, to isolate the Raspberry Pi's + 3.3VDC compliant output pins from supply voltages greater than this power source, an opto-isolator will be introduced as well.


Projects Dec 11, 2015 by Don Wilcher
How to Build a Wall-Following Robot

How to Build a Wall-Following Robot

This is the final part in a series of articles on building a robot that can follow lines or walls and avoid obstacles!


Convert a Vintage Thermostat into a Modern Energy Saver

Convert a Vintage Thermostat into a Modern Energy Saver

Programmable thermostats can save a lot of energy and money. But you don't have to buy one- you can convert an old mechanical thermostat into a programmable thermostat using an Arduino and a servo.


How to Build a Robot - Avoiding Obstacles

How to Build a Robot - Avoiding Obstacles

Part five of a series of articles on building a robot that can follow lines or walls and avoid obstacles!


Use an Arduino to Convert an Old Mechanical Thermostat into a Programmable Thermostat

Use an Arduino to Convert an Old Mechanical Thermostat into a Programmable Thermostat

Programmable thermostats can save a lot of energy and money. But you don't have to buy one. You can convert an old mechanical thermostat into a programmable thermostat using an Arduino and a servo.


Design Your Own Controller for a Solder Reflow Oven

Design Your Own Controller for a Solder Reflow Oven

In the last installment, we built the hardware to control an AC waveform with a TRIAC as the first step in a DIY solder reflow oven. This tutorial continues the project by showing you how to set up the low-level hardware to measure temperature, read the zero-cross detector, drive the TRIAC, and print to the serial terminal using a USART.


Projects Nov 17, 2015 by Patrick Lloyd
Connect a PICAXE to the Internet of Things

Connect a PICAXE to the Internet of Things

Connecting a PICAXE to the IoT through an ESP8266 module is easy once you know the process. Here are the details you need!


How to Build a Robot - Line Follower

How to Build a Robot - Line Follower

Part four of a series of articles on building a robot that can follow lines or walls and avoid obstacles!


Control Your AC Mains with a Microcontroller

Control Your AC Mains with a Microcontroller

Learn how to put together your own toaster oven controller with a handful of inexpensive, through-hole parts. The emphasis is on safety, low price, and minimal modification of the toaster oven.


Projects Nov 09, 2015 by Patrick Lloyd
How to Build a Robot - Testing Hardware

How to Build a Robot - Testing Hardware

Part three of a series of articles on building a robot that can follow lines or walls and avoid obstacles!


How to Build a Robot - PCB Design

How to Build a Robot - PCB Design

Part two of a series of articles on building a robot that can follow lines or walls and avoid obstacles! This time we'll be covering PCB design.


Get Started with Matplotlib in Python to Visualize Data Collected from Measurement Instruments

Get Started with Matplotlib in Python to Visualize Data Collected from Measurement Instruments

This article explains how to install PyVisa and MatPlotlib for Python. PyVisa connects a computer to the measurement instruments and matplotlib helps to visualize the data collected from these instruments.


Projects Oct 24, 2015 by Ujjwal Roy
Intro to Embedded Development: Styles and Standards

Intro to Embedded Development: Styles and Standards

Some of the unique aspects of embedded programming design will be highlighted, and various standards and tools common to the field will be discussed. Great for first-time designers and developers who have some programming experience, but are new to microcontrollers and things such as real-time operating systems.


How To Build A Thermostat with a PICAXE

How To Build A Thermostat with a PICAXE

An inexpensive PICAXE microcontroller makes it easy to read a temperature sensor, compare the temperature to a setpoint, and turn a heater or cooler circuit on or off.


Make an LED Light Strip AHRS with Arduino and MPU-6050

Make an LED Light Strip AHRS with Arduino and MPU-6050

Use a WS2812 RGB LED strip to visualize the pose of an MPU-6050 6-degree-of-freedom IMU in three dimensional space.


Projects Oct 13, 2015 by Patrick Lloyd
Raspberry Pi Project: Control a DC Fan

Raspberry Pi Project: Control a DC Fan

Control a fan based on the current temperature with a Raspberry Pi!


Make a BLE Temperature Sensor with the nRF51

Make a BLE Temperature Sensor with the nRF51

This article demonstrates how to use the built-in die temperature sensor on the nRF51. The die temperature is not the same as ambient temperature, but can be calibrated to ambient temperature by using a correction factor.


How to Build a Real-Time Clock with a PICAXE

How to Build a Real-Time Clock with a PICAXE

Teaming up a PICAXE µC, a DS1307 real time clock module, and an LCD117 serial adapter with a liquid crystal display is a fun, educational way to assemble your own date and time demo.


Light Bar “Relative Comfort” Thermometer with NodeMCU

Light Bar “Relative Comfort” Thermometer with NodeMCU

Create a wireless "relative comfort" light bar thermometer by broadcasting temperature data across multiple ESP8266 modules running NodeMCU using MQTT.


Projects Sep 28, 2015 by Patrick Lloyd
The New Wireless Thread Network Protocol

The New Wireless Thread Network Protocol

Thread, a network protocol released July 2015, is optimized for the connected home network. It is IPv6 based, uses IEEE Standard 802.15.4 and runs on existing hardware.