Got myself 4m of ws2801 LED Strip and a Teensy 3.0
Turns out this is a neat combination.
There’s 32leds/m 32*4=128 DC 5V
For retro pixel art anything above 8x8 is good. We can do 11*11 (1/3m high) or we use that to illuminate the kitchen counter.
We support up to 240 pixels per port, and there are eight ports per PixelPusher.
This gives a total of 1920 pixels per PixelPusher.
You can combine any type of chip on any PixelPusher on a per-string basis (ie.,
each string must consist of one single type of chip), but note that the power
voltage is only configurable on a per-PixelPusher basis. If you want to use
pixels (which are 12 volt) and strips (which are 5 volts) on the same
PixelPusher, you will need to remove the power pin from the connector shell
(takes about thirty seconds with a pointy tool or small screwdriver) and attach
it to power externally.
240 LEDS per 5 meters, so different spacing from my existing strip. Shame.
So either half a meter high (24 pixels) and only 10 wide but easy to augment with another strip on a second port and for now the existing strip with different pitch.
Or only 16 pixels high (~33cm) but 15 wide. And being realistic, for some retro pixel art anything above 8x8 is good.
Wiring definitely akin to this.
some links from research
- Teensy 3.0 running WS2801 Addressable LEDs at 750FPS!
- Projects Using Teensy
- LED Video Wall
- Long distance SPI installation: Lessons Learned
- PixelInvaders DIY Basic Pack
- Sewing Electronics at Hawaii STEM Conference
- adafruit: 5V 10A switching power supply
- adafruit: In-line power switch for 2.1mm barrel jack
- adafruit: Female DC Power adapter - 2.1mm jack to screw terminal block