Arduino equipped inline sensor skates

Anurag Mishra writes, Recently I bought a new pair of Inline Skates. So an idea struck my mind. I modified my skates to give me some results. I wanted to measure the speed with which I am skating and if I get to know the surrounding conditions, that would be awesome. So, I brought an […]

WiFi LED Light (ESP8266 + WS2812B + Lua)

Markus Gritsch shared his WiFi LED light project in the forum: I built a prototype for a WiFi controllable LED light, using the popular ESP8266 module running the NodeMCU firmware [1]. To allow controlling the WS2812B LEDs from Lua, I extended the firmware with a bit of C code Check out the video after the break.

Build a 16 million color WiFi-controlled LED lamp

Tom Van den Bon and Sebastian Schocke of Binary Space, a makerspace in the Vaal Triangle, have put together this build challenge for their members. For December at Binary Space we wanted to do something a cheerful and colourful. We got together to design and build a low power LED table or ceiling lamp that […]

Building a 3-channel, high power RGB LED driver

Francesco Truzzi published a new build, a 3-channel (RGB) LED driver: I built another board, which is a 3-channel (RGB) LED driver based on an inexpensive chipset called PT4115 (you can find them on eBay or Aliexpress). The circuit is very simple and looks like Sparkfun’s PicoBuck. However, I used beefier components and a different chip. You […]

Portable bluetooth-enabled scrolling LED matrix display

An open-source cascadable 8×8 LED matrix module using Arduino and MAX7219 from Embedded Lab: Easy Matrix is a cascadable 8×8 LED matrix module with the MAX7219 chip on board, which allows to control the display with only 3 I/O pins from microcontroller. Multiple Easy Matrix modules can be easily cascaded to make a bigger-size display through […]

Wireless LED driver with PCA9634

Ondřej Karas of DoItWireless writes, “If You are interested in LED driving through RF, this article would be interesting for you. I tested own PCA9634 breakout board for this chip and wrote simple low level driver for IQRF TR-52D module. Next week, I am going to publish PC application for comfortable operation with that.”

Simple constant current driver for a high power LED

Elmars Ositis has been working on a simple constant current driver: In my previous post, I slapped together a quick LED lighting solution for my workbench… but it is truly a hack. What I really want to do is make a simple constant current driver, so the power LEDs can be used in other projects. One […]

120 seconds voice record – play back

A message recording board capable of recording 120 secs of audio by Rajkumar Sharma over at Electronics Lab: This project is designed around ISD25120 which can store 120 Seconds audio. Recording and playback operations are controlled with tact switches. The kit has an onboard microphone and LED to indicate the functions of Play and Recording. IC has […]

Standalone SPI 7-segment display

Spacewrench over at Dorkbotpdx writes: I had some spare 4-digit 7-segment LED displays and some AT90USB82s, and I’d always intended to do something with them. This was probably the easiest thing! It’s just the AT90 driving the display, with a(t least) 4 wires controlling it: Vcc, GND, MOSI and SCK. (I haven’t written the code yet, […]

Mini LED volume towers (VU meters)

Here’s a cool Mini LED volume towers project by Ben Finio.  He writes a complete step-by-step instructions here:   The inspiration for this project started when I saw a variety of awesome stereo LED towers on YouTube (also referred to as VU meters). Many of the videos showed the end result, and maybe a slideshow of the […]