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.
December 11, 2015 by Don Wilcher
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.
November 18, 2015 by Jason Poel Smith
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.
November 17, 2015 by Patrick Lloyd