Laptop Crashes or Reboots After Torsion Spring Release (ODrive S1, D5065 Motor, USB Isolator)

1

Hi everyone,

I’m running into an issue with my ODrive setup and would appreciate any insights.

Setup:

  • ODrive S1 in velocity control mode
  • Motor: D5065
  • Gear reduction: 1:216
  • Power supply: 24V, 15A
  • Connected to Windows laptop via USB-C to USB-A cable with a USB isolator in between

What’s happening:

  • The system compresses a torsion spring without much effort, drawing no more than 8A.
  • Once the spring is fully compressed, it’s suddenly released by the mechanism.
  • Issue: Shortly after the spring is released, my laptop sometimes crashes or reboots. This doesn’t happen every time but enough to be a concern.

I’m wondering if this might be caused by electrical noise, back-EMF, or some kind of grounding issue affecting the USB communication, even with the isolator in place.

Any advice or similar experiences would be very helpful. Thanks!

2

Wow, that’s super strange. Is the windows laptop connected in any way to the power supply? Is the laptop charging / plugged into the wall? What power supply model number?

3

Laptop was on battery power when I was testing it. Just a note- I am compressing pretty substantial torsion spring here. I can’t tell if the motor overshoots after the spring is released.