(...) Sounds good. I use a CyberMaster for the movement part of the robot because it has tachos on each internal motor. I modify the power settings for the motors to keep the robot (reasonably) straight, rather than stop and start them. If you tried (...) (20 years ago, 10-Jun-04, to lugnet.robotics.rcx.nqc)
Have you come across the adder/subtractor drive? Although it make the gear chain slightly more complex - it may mean you can leave out the sensor entirely. The drive has two inputs (A and B), and two outputs - one being A+B, and the other A-B. So if (...) (20 years ago, 10-Jun-04, to lugnet.robotics.rcx.nqc)