Using the Pololu Low-Voltage Dual Serial Motor Controller, BasicStamp (BS2), and the Tamiya 70097 Twin-Motor Gearbox Kit, I am having buggy problems.
The example code in the user guide works fine. But, I cannot set a high speed with a command like:
SEROUT 9,84,[$80,0,4,100]. The SMC LED will flicker and the motor will move then stay off.
I also cannot run two motors at the same time with commands like:
The result is similar where neither motor will run.
Using the following command which works:
I can use an oscilloscope, to look and the SMC pins. I see a very noisy logic supply when the motor is running.
I have the recommended capacitor on the motors across the terminals. I am using 26 AWG wire from the SMC to the motors. Each pair is twisted and about 7 inches long.
Any thoughts as what I need to do to get clean, consistent results?