DIY prototyping board with 3.3V, 5V, 12V and -12V built in power supplies

Electro Labs’ new project the DIY prototyping board with 3.3V, 5V, 12V and -12V built in power supplies: This DIY Prototyping Board is designed to provide all the most used supply voltages that a designer will need during prototyping a circuit. The switching power supplies on the board output 3.3V, 5V, 12V and -12V rated at […]

Power bar, a small breadboard power supply

NsN has been working on a power bar, a small breadboard power supply: The power bar is a small breadboard friendly power supply with three independent voltage regulators and built-in current monitoring. The target applications are small, mostly digital projects, which don’t need a large 0-30V, 6A benchtop power supply, but at the same time want […]

Infrared Receivers – signal lag and distortion

The crew from AnalysIR writes: Many electronics enthusiasts will be familiar with how Infrared receivers demodulate IR signals. In this post we show a visualisation of the time lag and distortion of the signals as they pass through the IR receiver for demodulation and noise filtering. Most DIY projects use the raw timings from the […]

Piezoelectric crystal speaker build

This video by RimstarOrg demonstrates how to build a Piezoelectric crystal speaker: I make a loud speaker for a clock radio using a piezoelectric crystal. Actually I experiment with a variety of piezo crystals. That includes a piezoelectric igniter crystal from a BBQ lighter and a homemade/DIY rochelle salt piezoelectric crystal. I also try out a piezo buzzer from […]

Simple DIY JBC soldering station

jry shared his simple DIY JBC soldering station in the project log forum: Current status: transformer inside old PSU housing as temporary solution. I don’t want to mess with mains on my desk. For now battery powered (3.2V LiFePO4) logic part. Opamp, Atmega328p, three buttons, LCD (waiting for b&w OLED instead of this one for […]

PID based thermostat built using the Flash Destroyer module

jeanmarc78 posted his PID based thermostat built using the Flash Destroyer module in the forum: After trying a few commercial thermostats for my central heating (hot water), i was not really satisfied. They don’t provide a smooth regulation. Then i decided to build my own one reusing my flash destroyer hardware board.  

Home built bench power supply

Ian Johnston wrote a post on his blog detailing his bench power supply build: My workshop has a couple of bench power supply’s, one is an old Farnell TOPS 3D 3-rail tracking job, and the other is a 3-rail CSI CSI3005XIII with Constant Current functions. The farnell is all analogue but has no constant current control, it has […]

DIY Pick and Place v2 project complete

Brian Dorey has written an article detailing the build of his DIY Pick and Place v2 project: The DIY pick and place machine project is now finally running and is able to place the components for our Raspberry Pi expansion boards. This project started in July 2013 when we began to order the various components, bearings, motors, […]

Arduino Astronomical clock for automatic light control

Here’s a project log covering the build of  an Arduino Astronomical clock for automatic light control by Paulo Oliveira: My objective with this project was to build a system that, given my latitude and longitude coordinates and the current time/day of the year, automatically calculates the sunrise and sunset times, controlling the lights accordingly. There are of […]