PHUE - Targeting System

[atmega168]

I have designed a ring of LEDS using rebel's
Designed to use 3 of each RGB LEDS this shield receives +12v and connects like a servo. The Signal controls the HUE of the output of the shield.
The retro reflective tape on the vision targets then fire the light back the same angle it came in, IE the camera lenses.

We found purple and green to work well.



A version using only 3 LEDS will be offered as well.

Images from the Camera with the 3 LED version will be up soon.

Before I start production, of this, I want to test the waters of who is interested. time 2-3 weeks.

Please let me know. And if you have a In house fab for PCBs, let me know then we can cut time and costs

So who is interested!

[mikets]

I think Andy Mark also offers a 12V green LED ring light that you can purchase with FIRST credit. I believe it has 15 LEDs.

[mikegrundvig]

The only Rebel lights I'm familiar with are from Phillips and don't come in RGB to my knowledge:
http://www.philipslumileds.com/produ...on-rebel-color

Did I miss the RGB variant?

We might be willing to buy the design and code but not the production board itself as it will take too long and we can build it in house with a pcb router and solder the vias. A couple of questions:

How powerful of LEDs will it drive?
How many bits of PWM are you using? This dictates how well you can dim and color control the LED at the same time.
Are you using HSB or something simpler?

I think Andy Mark also offers a 12V green LED ring light that you can purchase with FIRST credit. I believe it has 15 LEDs.

Yup, it's a nice little ringlight. BUT, the AndyMark ringlight is NOT powerful enough in our teams opinion - we've already tested it pretty heavily. We got superb results for a little distance (10-15 feet) but the noise in the image had to increase a lot by the time we got to 20-30 feet. We are shooting for 40-50 feet of good image quality/edge detection in a bad lighting environment so we can have some confidence of it working well in actual competition. It's not that we expect to shoot that far but we do expect imaging to be working consistently and this means good, controlled, lights are critical.

-Mike

[Alan Anderson]

Originally Posted by mikegrundvig

Did I miss the RGB variant?

The "3 of each RGB LEDS" is a little misleading. It means 3 each of red, green, and blue.

[atmega168]

I update to a new version using 3 1-Red 1-Green 1-Blue Rebel LEDS

This reduces cost greatly and still has a great range.

The key to the design working is the proximity of the leds to the lenses.
Andy marks is pretty far away from the center of the lens.

The signal will be a standard Digital Servo PWM.
That is 1.25-2 ms High 20 ms pulse length.

It will be scaled along the 360 Color wheel to control HUE.

So 1.25 = Red
1.5 = Green
1.75 Blue
2.0 = RED

A simple modification to any servo library will fix this.

Otherwise the code can scale it along the standard 1.25-1.75 timing,
But I would like green to be the "HOME" position.