Parallax propeller full color scrolling clock and message board

This project runs on the 8-core Parallax propeller chip and uses a chain of 12 74HCT595 shift registers to drive a set of 3 8x8 RGB LED matrices from Sparkfun. The board at the right is the standard Parallax Propeller prototyping board, and the 3 cascading LED boards are of my own design (and can be manufactured on demand at batchpcb.com rather cheaply.)

It takes all 8 cores of the Propeller to talk to the clock chip, scroll the bitmap, assign it a new color over 100 times per second, and then display it with high-speed PWM for flicker minimization and color fading. Let's see an Arduino do that without extra offboard PWM LED controllers!

4 pushbuttons allow you to change the scrolling speed and shift between fixed color modes and the automated random color fader.

Category:

Science & Technology

Tags:

• parallax
• propeller
• rgb
• led
• arduino

[Endaman07]

Hey is this your own project? If it is you should enter the Nuts & Volts "LED Madness" contest on Facebook. There looking for people to upload a short video of their own LED projects and the top 3 videos with the most votes wins. Just search for Nuts & Volts Magazine on Facebook or visit their site and you'll see a banner at the bottom of the page to enter the contest.

[andrewsil1]

@Endaman07 Appreciate it. Don't think I'd win, but maybe I'll look into it if the contest is still open. (FB flagged your entry as spam initially, but obviously it's not.)

[OLEDhit]

youtube.com/watch?v=kYM-qe5YGf­0&feature=related