Category Archives: led matrix

A Hard Rocking Arduino Visualization Shield

Over the summer [ElectroSmash] put the finishing touches on the Arduino Audio Meter, a shield for the Arduino Uno that visualizes various aspects of an incoming audio signal on a set of four 8×8 LED dot matrices. Obsentisibly it’s for use on a guitar pedalboard, but thanks to the incredible …read more

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Posted in adc, Arduino Hacks, audio meter, guitar pedal, led matrix, MCP6002, musical hacks | Leave a comment

Lateral Thinking For An Easier Charlieplex

In the practical world we live in, PCBs are often rectangles (or rectangles with rectangles, it’s just rectangles all the way down). When a designer goes to schematic capture things are put down on nice neat grid intersections; and if there isn’t a particular demand during layout the components probably …read more

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Posted in art, charlieplex, crafting, efficient, freeform, led, LED display, led hacks, led matrix, multiplex, woven | Leave a comment

DIY Button Matrix Lights Up And Speaks I2C

[David Johnson-Davies] always wanted an illuminated button matrix for projects, but cost was never very friendly. That all changed when he discovered a cheap source of illuminated pushbuttons on Aliexpress, leading to this DIY 4×4 illuminated button matrix design which communicates over I2C. The button states can be …read more

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Posted in attiny, ATtiny Hacks, attiny88, button matrix, i2c, illuminated buttons, led hacks, led matrix, Microcontrollers | Leave a comment

RetroPie NES Clock Tells You When it’s Game Time

We’ve all seen the 3D printed replicas of classic game consoles which house a Raspberry Pi; in fact, there’s a pretty good chance some of the people reading this post have one of their own. They’re a great way to add some classic gaming emulation to your entertainment center, especially …read more

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Posted in 3D printed enclosure, clock, led matrix, nes, nintendo hacks, Raspberry Pi, RetroPi | Leave a comment

RGB Word Clock Doesn’t Skimp on the Features

Like most pieces of technology, word clocks seem to be getting better and better every year. As hackers get their hands on better microcontrollers and more capable LED controllers, these builds not only look more polished, but get improved features and functions. Luckily for us, the rise of these advanced …read more

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Posted in clock hacks, ESP-01, ESP8266, led, led hacks, led matrix, Microcontrollers, word clock, ws2812 | Leave a comment

Cylindrical LED Display Comes Full Circle

According to [makeTVee], his latest project started out as an experiment to see how well the LED matrix techniques he’s worked with in the past would translate to a cylindrical form factor. We’re going to go ahead and say that not only was the test a success, but that the …read more

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Posted in led hacks, led matrix, LED wall, pygame, RGB LED, ws2812 | Leave a comment

Is That A Word Clock In Your Pocket?

Word clocks are one of those projects that everyone seems to love. Even if you aren’t into the tech behind how they work, they have a certain appealing aesthetic. Plus you can read the time without worrying about those pesky numbers, to say nothing of those weird little hands that spin around in a circle. This is the 21st century, who has time for that?

Now, thanks to [Gordon Williams], these decidedly modern timepieces just got a lot more accessible. His word clock is not only small enough to fit in the palm of your hand, but it’s the easiest-to-build …read more

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Posted in bluetooth, clock, clock hacks, Espruino, led hacks, led matrix, Microcontrollers, word clock | Leave a comment

Morphing Digital Clock Will Show You A Good Time

A few weeks ago, [HariFun] set out to emulate a 7-segment display with an LED matrix. Seems easy enough, right? Right. He also wanted to come up with a new way to transition between digits, which is a much harder task. But he did it, and it’s really cool. At a viewer’s suggestion, [Hari] used the transition as the basis for a mesmerizing clock that brings the smooth sweep of an analog second-hand into the digital age.

This is the coolest way to watch the time pass since the hourglass. You can almost hear the light move as one digit …read more

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Posted in clock hacks, ESP8266, led matrix, Microcontrollers, NodeMCU, RGB LED matrix | Leave a comment

Fast LED Matrix Graphics For The ESP32

Many of you will have experimented with driving displays from your microcontroller projects, and for most people that will mean pretty simple status information for which you’d use standard libraries and not care much about their performance. If however any of you have had the need for quickly-updating graphics such as video or game content, you may have found that simpler software solutions aren’t fast enough. If you are an ESP32 user then, [Louis Beaudoin] may have some good news for you, because he has ported the SmartMatrix library to that platform. We’ve seen his demo in action, and the …read more

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Posted in led, led matrix, Microcontrollers | Leave a comment

Count YouTube Subscribers with this Red Play Button Award

Professional YouTubers live and die by the number of subscribers they have. It seems like a brutal way to make a living to us, but to each his own. Still, if you’re going to do it, you might as well do it right, and keeping track of how you’re doing with this Play Button Award subscriber counter might make sense. Or it might drive you nuts.

YouTuber [ibuynewstuff] has reached the vaunted 100,000 subscriber mark, the number required to earn the Silver Play Button award. Sadly, 100k is the bare minimum needed to get YouTube’s attention, and tales of waiting …read more

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Posted in led matrix, misc hacks, NodeMCU, subscribers, video hacks, youtube | Leave a comment