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Unread 09-03-2004, 21:39
KenWittlief KenWittlief is offline
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Re: Where can I buy Gyros that fit requirments?

the gyro chip itself is a tiny little thing, about a 1/4 inch square, and its a ball grid array device (BGA) - instead of pins it has a matrix of solder balls on the bottom that melt down onto a grid of pads when assembled onto a printed circuit board

thats why we advised everyone to get the EB version - its the gyro chip already mounted on a small printed circuit board, the size of a 20 pin DIP package if Im not mistaken, and it already has decoupling and filter caps on it

you could mount it on some of the protoboard they gave us in the KOP - the stuff you used to make the beacons - cut a piece big enough to put mounting screws through with the EB device in the center - attach the three wires (I think you have to connect power to two pins)

and you will be ready to fasten it to you bot.

We put ours in a black plastice 1x2x4" project box from radio shack, just to protect it.

BTW - you need to mount the board/box solidly to your robot frame - it cant be just hanging loose, or even on tape -you want a solid mechanical connection to the frame so the sensor moves exactly the same as the frame moves.