2 Bit Motor Controller Weirdness
March 24, 2011
I was wondering if some of you guru's could provide some insight as to why (what I thought was simple) motor controller is not preforming correctly.
The problem is, the direction bit is failing. Or one motor's direction bit... the other is working fine. I switched direction lines to data pins and now it's all crappy (damaged BBB now?)
I'm wondering if its a problem of not enough current from the BBB board, which leads me to another question.... Anyone have experience on over-sourcing the pins of a BBB board? Is it now all burned up?
Unfortunately, it will take time to unpack it all and do a decent amount of diagnostics..
Here's another question ... How do I determine the maximum amount of current the BBB data pin can source, AFTER I have possibly damaged it, without damaging it further (obvious answers like RTFM will not be accepted at this time) ;D
2 bit F&#(@ ! - just switched them back and now both direction control lines will not work - both motors will go forward but now (since I switched the bad (right side) with the good (left side)) and now switched them back - they both will not go reverse... only forward.. It appears that it is contagious (yarg) !
Motor Driver Schematic