Here’s an instructable on LED Matrix with custom code/software by Ole_L:
This is the software which you need:
-Arduino
-Processing
Flash the software to your Arduino and open the processing project with… Processing! Now you should change the line “String portName = “/dev/ttyACM~”;” to your Serial port, on WINDOWS “String portName = “COM~”;”
Via the contact form. Thanks Jan!
Check out the video after the break.
The project is using WS2812, so bragging about 5 I/Os is a bit of cheating…
Exactly. Let’s see it done Charlieplexed with 5 I/Os, then we can talk…
Why not do it with one pin? Much easier. There is no benefit of driving 5 strips with 10 leds in parallel. The protocol is fast enough to update 5×10 leds serially.
If it’s WS2812 couldn’t it be done with one pin? Seems like a waste of four good pins.