BasicMicro

hi,
im building a rover for inspections at my workplace.
It is build on a wild thumper 4wd platform and uses a Roboclaw 2x15A.

I've added a Raspberry Pi 4 (with cam2) with OpenHd to get a FPV operated rover, Groundstation (RPi4) uses a XBox controller and sends RC signals over OPenHd. The Rpi in the rover decodes the iBus signals and sends them to a Arduino Uno which translates it to RC signals the Roboclaw can understand.

Roboclaw is stup in RC-mode.

Now the following problem, because i have no encoders i can't seem to get the rover drive straight....
Because the DC motors have a preferred rotation direction. Left drives CW and right drives CCW when driving forward, this causes one set of motors to drive faster...

Is it possible i can solve this problem without the use of encoders???
It would be great if i can set a offset (trimming function) in the windows software to get it running straight.
Hope someone can help me with this issue.
kind regards,

Bert.
Tata Steel Europe.

Roboclaw does not have any trim functions. With RC mode it is assumed you are using a RC radio which all have trim.

You will need to adjust your RC pulse output in your arduino code. Alternative, we recommned using packet serial commands with arduino and add offsets to the commands as appropriate.