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AID: motors and opto

From: robc   robccitytv.com
Date: Wed, 26 May 2004 08:57:53 -0700

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I left the opto sensor board and the motor driver board in the cupboard- the
opto sensor should be ready to go, I adjusted it yesterday. You can set the
threshold for each cell by the appropriate pot, if a bit is not responding.
Covering the sensor makes the line go high. 

The motor driver is partially tested- it needs 5 volts on the pins marked
logic, and a *separate* 9v supply on the pins marked +/-. Do not use the
same supply for the motors that you are deriving the logic voltage from. 
8 bits are as follows;
0 motor 1
1 motor 1
2 motor 2
3 motor 2
4 motor 3
5 motor 3
6 motor 4
7 motor 4

There are two bits per motor. Raising one and keeping the other low make the
motor go in one direction, the opposite configuration makes it go the other
way. Both bits low make it coast, both bits high brakes.
Like so:
00-coast
01-CW
10-CCW
11-brake
 

Rob Cruickshank 
Engineering Projects Group   
CHUM Television
Voice: 416.591.7400 x2175
Fax: 416.591.2321
Email: robc@citytv.com                            

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