Ceiling Fan POV

July 22, 2009 by Caleb Kraft 30 Comments

FDG3AFAFXETSIYM.MEDIUM (Custom)

We know some of you are getting sick of POV projects, but this one was just so cool, we couldn’t resist. [UncleBone] thought POVs were pretty cool, and wondered if he could use one on his ceiling fan. It would have been a breeze just to toss something like the RGBike POV on there and call it finished, but he designed his own. Opting to blow away the norm of using a single row of LEDs, he chose to do 5 different rows of LEDs, one for each blade. The whole thing is controlled by an Arduino, with a spreadsheet for image manipulating. Unfortunately, we don’t see any source files for the project available. Maybe he’ll put them on there if we ask really nicely. If he could get it playing animations, we would just chill and watch it for hours.

Volver

July 20, 2009 by Caleb Kraft 17 Comments

[youtube=http://www.youtube.com/watch?v=JmkW5PpjfNg]

Volver is a 3.75 inch square LED matrix that will display over 1600 unique patterns. Designed by members of Image Node and Disorient, it is a fundraiser for burning man 2009. While it is certainly less colorful than its older sibling the Nodeblinky, it features 8 more LEDs and a bit smoother and faster graphics. Volver can be picked up as a kit, or fully assembled from their site. Just like last time, you don’t have to buy from them. They freely offer the source code and schematics.

4 LED RGB Controller

July 13, 2009 by Caleb Kraft 2 Comments

4rgbled-angle-rainbow_thumb (Custom)

[Steven] was inspired by the BlinkM and Shiftbrite modules, but really wanted something that could be controlled via RS232. He decided to build his own RGB LED module capable of PWM that fit his needs. He’s using a PIC16F628 microcontroller as the base. Each module has 4 individually addressable LEDs with multiple intensities for each color. The units can be daisy chained as well. The schematics and PCB files are available on his site for download.

[via Hacked Gadgets]

Photo Interrupters Explained

July 12, 2009 by Caleb Kraft 20 Comments

img_0147 (Custom)

[Eric] sent in this very informative writup on how to use Photo interrupters. These things can be used for many things, he lists pellet dispensing and limit switches. He found one in his junk box and realized he knew very little about it. After some exploring and research, he’s here to educate the rest of us. There’s a good breakdown of the circuit itself which is pretty simple as well as a test circuit and some sample code.

DIY AVR USB RGB LED Notifier

July 6, 2009 by Zach Banks 37 Comments

Giving us a chance to break out the TLAs, [Blair] sent in his latest hack where he embedded an RGB LED into his EeePC to display twitter, pidgin, and email notifications. It is based around the ATtiny45, and requires very few additional parts. He based the project on a foundation of work laid by [Dennis Schulze] on notifications and the work of [Dave Hillier] that used V-USB, a library for implementing USB on AVRs. The entire circuit was done freehand and crammed inside the netbook. He says that it is a lot easier to see notifications, even when the laptop is shut.

Related: Email notification via RGB LED

Massive LED Screen Project

June 30, 2009 by Caleb Kraft 29 Comments

[youtube=http://www.youtube.com/watch?v=nILHGU1qJzY&eurl=http%3A%2F%2Fwww.basicmicro.com%2F&feature=player_embedded]

The folks over at basicmicro.com are working on a massive LED display. They currently have one 32×32 RGB panel working. It displays 50 fps at 140 hz but the one above is only running at about 24 fps. The final display will be 40 of these panels. This thing is going to be massive. We have to wonder how this compares, financially and performance wise, to the commercial signage that displays videos.

Parts: ShiftBrite RGB LED Module (A6281)

June 29, 2009 by Ian 11 Comments

shiftbriteii

Macetech’s ShiftBrite is a high-power RGB LED coupled with an Allegro A6281 backpack. The A6281 uses three 10bit pulse-width modulators to mix millions of colors using the red, green, and blue elements in the RGB LED. Multiple modules can be chained together for bigger projects, like the ShiftBrite table.

Below the break we demonstrate a ShiftBrite module using the Bus Pirate. For a limited time you can get your own Bus Pirate, fully assembled and shipped worldwide, for only $30.

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