In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Macgman2000 wrote:

I am working on a skid steer (tank steering, with left and right motor drives) platform. I want to use 2 potentiometers one for X and Y so that I can mix motor drive1 with motor drive2 with varying proportions. 

The following is the joystick position and drive logic:

stick north: motor1 and motor2 have identical proportional speed and direction
stick south: same as north with reverse direction
stick east: motor1 proportional drive
stick west: motor2 proportional drive 

think of it as a flight RC remote control. I want to mix on one stick the function of a RC tank. 

Are there any nifty ways of doing this that makes it slop resistant (mechanical joystick slop)?
I used case statements but seem to fall out if the stick is not in perfect alignment. 

Nick

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