Added 3 phase servo support

A project log for Open FFBoard

A modular and open source force feedback interface and motor driver for DIY wheels and controllers

Yannick (Gigawipf)Yannick (Gigawipf) 05/23/2020 at 20:540 Comments

As most high end direct drive wheels use servos instead of steppers servo support is important.

The 130ST-M10010 and 130ST-M15015 are the most common servos for this application with over 20Nm of torque.

In the last weeks i was able to compare the Nema34 stepper and a Mige 80ST-M02430 and a 130ST-M15015. Two very different servos.

The 80ST is with under 5Nm a bit weak but has very low resistance and good reaction speed while the 130ST has dangerous amounts of torque and a bit more mass and resistance.

For a wheel the 130ST is probably the best option here.

The next TMC motor driver will also have the new chip with a few fixes, an onboard step down for better reliability and will probably keep the external braking resistor as the large servo does generate quite a lot of voltage when being turned manually.

Update summary from the last video:

Reasonable motors are for example:

3 Phase servos:

Nema34 Steppers with Encoder:

34HS59-5004D +Encoder (E6B2CWZ6C or AMT132)

Those are all usable motors :)