Sunday, January 27, 2008
Saturday 1.26.08 at Castilleja
So those of us that didnt go to IDEO yesterday worked on the electronics board. David and I set up the electronics board, while the recruits learned to solder and clamp-smush. Once we got the board running, we realized that the motors were not both going forward when the joystick was forward (obviously a problem). So we tested a number of things. the speed-controllers, the motors, the connections. Only to learn today that they were just oriented wrong on the table top. Also, we couldnt figure out why when the motors were going forward, one set of pwm lights was green (full-forward) and one was red (full-backward). Today we figured out that the motors were turning in opposite directions when they were at 90 degree angles from each other because when they were on top of each other they would be turning the same direction. and so finally we had to solve the problem of them starting at different times. Since a motor being backdriven takes more torque to start, one motor was always lagging behind the other. So we are now trying to fix that in our code. now its sunday around 1:00.