Traffic signs- 1k pixels around
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
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- Posts: 150
- Joined: Tue Oct 09, 2007 1:06 am
I bought a 100 RGB LEDs on e-bay, and did a new set of boards with enough '595's to drive them. Rewrote the firmware to drive them, and wrote Matlab programs to generate the color separated data files.
Point worth mentioning, the LEDs duty factor is reduced as you move in from the outer LEDs to the inner. The LEDs near the hub travel a shorter distance and would otherwise be much brighter than those further out on the wheel. Goes from 100% (near rim) down to something like 20% near hub. The allows for an even illumination across the image. Your eye doesn't notice so much but makes it easy to photograph without glare in the middle and saves battery power to boot.
Point worth mentioning, the LEDs duty factor is reduced as you move in from the outer LEDs to the inner. The LEDs near the hub travel a shorter distance and would otherwise be much brighter than those further out on the wheel. Goes from 100% (near rim) down to something like 20% near hub. The allows for an even illumination across the image. Your eye doesn't notice so much but makes it easy to photograph without glare in the middle and saves battery power to boot.
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- Posts: 1119
- Joined: Wed Jun 13, 2007 9:17 am
Please be positive and constructive with your questions and comments.