I am still working the kinks out of my joyrider.
In an effort to cut my loses on Pololu High Power Motor Divers 24V23, yes I smoked two more of them this past week, I’m redoing my set up. First I’m relocating the AVR 1.6, from the tabletop next to my computers to the joyrider simulator, underneath the seat reducing the length of my leads going to the batteries, and the OUTA and OUTB leads that go to the motors. I Reduced the length of my wiring on the bank (rear) side by about 3 feet. And I want to relocate the whole High Power Motor Diver 24V23 packet heat sink and fan to the front end of the joyrider to reduce the length of the leads going to that motor. I figure I could lose 3 to 4 feet doing so! The question I have is: is there a limit of how long the leads going to PWM, DIR, and Gnd are? I’ve also reduced the voltage from 24 volts to 12 volts. Do you have any negative or positive information, etc.? I’m still using Pololu High Power Motor Driver 24V23 to accomplish this. I run the things for a time, all goes well, then...
It seems like I burn the darn things up on calibration of the motors. After motor calibration, if I get through the motor calibration every thing seems to go fine. If I put the simulator on a on a break, say if I’ve got to work and can not use it for an extended amount of time it seems like the problem seems to occur on start-up or after I charge the batteries. I’m using wheelchair motors rated at 24 volts. If I run them at 12 volts will I run into any problems increased with amps, heat or anything else? I’m not an electrical engineer just a person that likes to make things go!
I checked with Claire, at Pololu Support and she suggested I increase the supplied capacitors which were 100uf at 63 volts to 2200uf at 50 volts which I did. I was wondering about the length of the leads for Pwm, Dir and Gnd, can they be 4 feet long or longer? Currently I’ve got them at 8 inches but in order to put one motor driver on the front of the simulator I’ve got to run a 4 foot length of the lead to Pwm, Dir and Gnd,. This will cut the length of the OUTA and OUTB (motor leads). Or should I leave things as they are? Are there any tests I can do..
jsmith2307
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