Any child born today has a bright future ahead of them—mostly consisting of watching glowing rectangles for 80 or 90 years. To give his progeny a jump-start on a lifetime of watching LEDs flicker, [Dan] created a busy box. It’s really just an Arduino, RGB LED matrix, and a programmed particle system, but if we’re fascinated by it, it will probably blow an infant’s mind.
The idea for this busy box originated with an earlier Hackaday post that used an 8×8 matrix of RGB LEDs to create a moving color cloud. [Dan] took this project as a jumping off point and created an infant’s busy box with four modes that are sure to be entertaining.
Inside the is a Rainboduino: an Arduino compatible board capable of driving an 8×8 RGB LED matrix. Also stuffed inside the busy box is a 9V battery, rocker switch for the power, and four arcade buttons that cycle through each mode. The first mode is some sort of ‘plasma cloud’ simulation, the next is a ‘painter’ light display. The final two modes spell out [Dan]’s spawn’s name, and all the numbers and letters of the alphabet.
Continue reading “Particle System Busy Box Keeps Baby Occupied”
[Craig Lindley] recently finished building his own RGB LED cube project. It’s made up of four layers of 4×4 LED grids, but you may notice that the framework that supports the structure is not the usual ratsnet of wires we’ve come to expect. They’re actually long, thin circuit boards. [Craig] grabbed the Rainbow Cube kit sold by Seeed Studio for this project. But instead of pairing it with their Rainbowduino driver, he built his own to give him more options on how to control the blinky lights.
He’s using an Arduino Uno to control the display, choosing TLC5940 driver chips to safely provide the juice necessary to light up the grid. These drivers also offer 12-bit pulse-width modulation for easy color mixing. Driving the LEDs directly would have taken a large number of these expensive chips (over $4 a piece), but if multiplexed the design only calls for two of them.
Check out a video of the finished cube reacting to music thanks to the microphone and amplifier circuit [Craig] build into the driver board.
Continue reading “LED cube is a little bit of kit, a lot of point-to-point soldering”
This is just an 8×8 LED matrix, but the size and execution make it look marvelous. [Michu] built this module using foam board dividers to separate the cells, a foam board back to host the 64 RGB LEDs, and a sheet of heavy frost diffusion gel that is a stage lighting product. The display is driven by a Rainbowduino with input from a processing sketch. The effects seen in the video after the break are quite pleasing, and are just begging to be installed in your next coffee table project.
Continue reading “Daft punk module – just add table”