Motor drive reversed, inconsistent

[moggoly]

There's an inconsistency between the code on your site and in here.

On your site, the lines that drive the motors is shown as:

PBR.SetMotor1(-driveRight)
PBR.SetMotor2(driveLeft)

But in the diddy*.py files here the directions are reversed:

PBR.SetMotor1(driveRight)
PBR.SetMotor2(-driveLeft)

I've used your code as a basis for my own version (also using PicoBorgRev), but was scratching my head last night wondering why the motors were not spinning in the right direction, and thought my motor connections were all wrong...

Should they not both be used without negation?

[piborg]

The DiddyBorg examples should all be using the following code:

PBR.SetMotor1(driveRight)
PBR.SetMotor2(-driveLeft)

in all places so that the front is where the camera fits.

I cannot see the page where the left / right swap is, could you point me to it?

The reason the motors are inverted is that all of the motors are connected the same way electrically.
That is to say both the left and right motors are connected so that + -> + and - -> -.
Since the motors are then fitted the opposite way around it means the left and right wheels turn in opposite directions.
By inverting one set we make them spin the same way.

[moggoly]

It's on the 4Borg Web UI page: https://www.piborg.org/4borg/webui

[piborg]

Ah, that is a mistake...

On 4Borg the left and right motor connections are swapped over to keep the cabling neat.
This means with a 4Borg the code should be:

PBR.SetMotor1(-driveLeft)
PBR.SetMotor2(driveRight)

I have updated both GitHub and the website for the 4Borg files.
The rest of the 4Borg standard examples are already correct in the installation.