With jetson nano rover and I presume this might be true for the raspberry pi as well, when using the ppm rc receiver, the motor deadband test in mission planner as shown in rover build video setup does not work. I determined the the wheels start spinning at a value of 6%. I go into config parameters to mot_throttle_min and set it to 6. I go back to motor test and set the value to 1% and test motor and it does not run. I checked every thing on the internet and one post mentioned the ppm receiver may have issues with pixhawk and mission planner. If someone with a rover with the ppm rc receiver could check this test on their rover to see if it works that would be awesome. Maybe Caleb could check this out. This is an easy test to do and wondering why it does not work. Also maybe there are settings and/or parameters in mission planner config parameters or rc transmitter settings that may have sometbing to do with failure of the motor dead band test. Help on this matter is much appreciated.
Is the core issue that you just want more fine control of the motor, so you’re trying to optimize the lowest PWM response, or is there a more meta problem you’re having where you aren’t able to run the rover at all- and this investigation into mot_throttle_min is an attempt to solve the meta problem?
Hi Caleb,
Actually the rover works fine in guided mode but was wondering why the motor deadband test isn’t working and if this is due to the use of the ppm encoder? Was wondering if you could do a quick test on one of your rovers to see if you have issues with this test too using the ppm encoder? Thanks much and great to hear from you…Rick