pcfe's blog

Ws2801 LED Strip and Teensy 3.0

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.

PixelPusher

w00t, PixelPusher made it’s funding goal at Kickstarter

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