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ShiftBrite Headers and Chaining Question
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ShiftBrite Headers and Chaining Question

by FloridaChris on Thu Oct 07, 2010 10:46 pm

Hi -
Prior to buying a bunch of ShiftBrites for a little project, I have a couple of questions -

First, are they sold with the headers pre-soldered to them? It looks like the ones at Macetech come assembled, although they're currently out, and your prices are pretty good.

Second - can each light be individually controlled, or is it the case that by chaining them together, they just pass messages down the chain of lights from one to the other?

Thanks.
- Chris
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Re: ShiftBrite Headers and Chaining Question

by macegr on Fri Oct 08, 2010 2:05 am

adafruit gets the headerless ShiftBrites from us, then packages them with two headers. The logic is that adafruit customers appreciate kits and flexibility of usage. At macetech we do sell pre-assembled ShiftBrites up to three times the rate of headerless...so due to dealing with a lot of other problems we've accidentally run out of the assembled ones. The thing about the headers is they lock you into using these either on a breadboard or with the special cables. If you buy headerless ShiftBrites from adafruit, you have the option of using the headers, or just soldering wires, or finding some other connector you prefer to use.

The ShiftBrites do chain together and pass messages from one light to another...and that lets you control each light individually. Each ShiftBrite adds another 32 bits to the shift register. The example code keeps an array in memory, you change the pixels you want to change, then run the update function which shifts all the pixels out to the display.
macetech LLC - http://www.macetech.com
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Please be positive and constructive with your questions and comments.