I would like to suggest that Vex publish the wiring schematic for the 11w v5 Smart Motor. Nearly all Vex teams are affected by the faulty Rev10 circuit board. our club had our first match last saturday and 1 team had 3 motors burn out. I understand that there is a band aid solution of limiting the m…

One of the symptoms people have reported and VEX engineering has been able to verify is fast control variations can be a problem. For example going from full forward to full reverse, with the current flow, the diode can’t manage that. It’s not a video game, these robots have weight and momentum. …

[image] grossminivans: find the issue faster than just the Vex technical support team We understand what the issue is, Levi explained that here. [image] V5 motors keep dying General Forum Thanks to the information on this post we have successfully reproduced the iss…

Will the firmware update fix motors that are already broken? Or is there a plan to replace them?

[image] elsassea: Will the firmware update fix motors that are already broken? No. According to @levipope the damage is physical: [image] V5 motors keep dying hat we have determined is that something is causing a diode to fail on that revision. When that diode fails it brings the power ra…

[image] technik3k: If I had any rev10 motors I would RMA them all right now before vex runs out of replacement options. That’s assuming the replacement would be a non-rev10 motor. There’s a definite possibility for “shuffling deck chairs on the Titanic”

For my own education, using voltage control, what are the max voltages you can send the motor using vexcode blocks, python, robotmesh, c, etc???

12v is the max enforced by vexos/motor firmware. They’re all using basically the same SDK so 12v should be the max achievable across all of them.

Ok. So if you use speed control, go from 100% forward to 100% reverse, what voltage does the motor see?

“Speed control” is a bit vague. If you mean the motor’s built in Velocity Control, then the user doesn’t directly control the voltage. Instead, the motor’s build in PID loop controls the voltage in order to hit the commanded velocity. How much voltage it uses to do this depends on load and what the …

Guess my point is that it doesn’t seem to affect those using velocity commands… or did I forget some of the posts in the thread?

A suggestion for the V5 11w rev10 Smart Motor problem

VEX V5 General Discussion

jpearman December 5, 2022, 5:54pm 3

We understand what the issue is, Levi explained that here.

and are testing potential firmware fixes, the short term solution is to keep motor voltage below 11V