3dof---jazzy wheelchair motors---flight sim version

Around that, or a little less, as best be conservative and work out from there.

Ideally the push rods should be as close to right angles with the levers when the platform is at rest, for now work out what CTC works well for your rig then move the motors once that is known.

The

The pots need to be centered when attached to the motors, and SMC3 properly configured.

Have you followed the Initial Setup steps in the SMC3 instructions: https://www.xsimulator.net/communit...3dof-motor-driver-and-windows-utilities.4957/

Initial Setup

I strongly recommend you follow the steps below if this is the first time you are using SMC3 with your simulator to reduce the risk of damaging anything.

1. Disconnect the motor power supply
2. Make sure Simtools is not running – we’re not ready for that yet!
3. Wire up the Arduino (with SMC3 installed) to your H-Bridges and connect to your computer via USB
4. Run the Windows SMC3 Utility software and make sure it communicates with the Arduino (There is no need to set baud rates, they are not configurable)
5. Set the Kp, Ki, Kd, PWMmin, PWMmax, PWMrev to 0 for ALL motors (This will make sure the motors don’t move)
6. Set Clip to 255 (you need to do this first) and Limit to 255 (This will give you plenty of margin if something goes wrong while setting up)
7. Turn on the power to your motors – nothing should move at this stage!
8. Set Kp to about 400
9. Now slowly, increase PWMmax… at some point the motor should start to move. When it does check the “Green” feedback line is moving toward the “Blue” target position.
   • If it is then that motor and feedback is wired correctly - proceed to test other motors.
   • If it is moving away turn off motor power immediately (or quickly reduce PWMmax again). In this case you need to either reverse the wires to the motor being tested –OR– reverse the +5V and GND wires to your feedback pot for the motor being tested (do not do both). Restart the test from the beginning.
10. Do the above for each motor

Fpwm should likely be 25, ensure the pots are centered (motor off check track line in SMC3) and the pot brackets don't flex. Step - set to 1.

I

In the Display settings of SMC3 (left side of UI) you can temporarily turn everything off except the line tracking the pot, to ensure the line, and hence pot, is centered in the graph when the pot is attached to the motor.

Just checking, is the pot perhaps 180 degrees out of rotation?