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Unread 30-01-2007, 10:56
TubaMorg TubaMorg is offline
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AKA: Dan
FRC #1480 (Robatos Locos)
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Re: Evaluation Board Gyro

Actually you do have to do a little wiring, it's still much easier with the eval board. Here's what you do (hopefully I'm remembering correctly). Below is the link to the spec sheet for the eval board for the 300 deg/sec model. Wiring is the same for the 150 deg/sec. Under the heading "Circuit Description" it sort of gives you clues to how to connect the thing.

http://www.analog.com/UploadedFiles/...XRS300EB_0.pdf

Mounting eval board:
1. Use a project circuit board from Radio shack. Doesn't have to be big.
2. Solder a wire from pin 1 to pin 13. This is your jumper.

Now you need to connect your PWM wires:
1. Black wire is ground, connect to either pin 8 or pin 12 as they are bridged in the EB.
2. Red wire connects to pin 1 or pin 13 (the same pins you jumped).
3. White wire is for the signal. Connect to the rate out pin (pin 2).

This is the simplest implementation and seems to work ok for us since we don't have any electrical engineers on the team. Further wiring can be done to help bias the output based on temperature and reduce noise, etc. but we found it to be unnecessary for the short duration of the competition.

Hope this helps a little!