OK, now for something completely different…
Some RGB LED matrix effects – Code: matrix_code.pde
(This code will not run flawlessly on up-to-date matrix boards without modification. Please only use this code, unless you exactly know what you’re doing.)
So far I’ve got some code using a timer1 or timer2 interrupt to do several nice effects. Maybe I’ll write some code for the device to listen to commands on the serial line.
But before that happens I need to get the PCB making process going again. It’s either toner transfer if I get the laminator hot enough, or I’ll buy some UV device to do old fashioned photographic layout transfer. What a pity that I sold one of these a few years ago. Now they cost the same numeric value in € as 10 years ago in DM.
SR = 74HC595, 8bit shift register, SPI interface (clock, data, latch)
UDN2981A = current source driver to power common anode rows
Please also have a look at my projects page for the latest demo code.
Comprehensive writeup at instructables.com