(Solved) Motor Current Monitoring with live plotter

Support
1

Hi All,

Does anyone know how I can run the start_liveplotter alongside a python code?

Because when I run the liveplotter in odrivetool, my python code cannot connect to the odrive with odrive.find_any() and I cannot run my code to perform motor movements and track the real time motor current supplied to the motor at the same time…

Thanks in advance

2

Ok so Oskar replied me on discord and i guess I will paste his reply here.

“You could launch your script while in the interactive odrivetool prompt using the %run command.
You can just cd to the correct folder that contains your script first, then run odrivetool in that folder, then it should just be %run yourscript.py”

I Tried doing this but it returns me a name error “odrv0 not defined” which is weird since the odrivetool has already connected to my odrive as odrv0, why can’t it define it?

Solution:

  1. in ur python code type this in -> from odrive.utils import start_liveplotter
  2. create a function that calls the start_liveplotter
  3. Profit$
3 Likes
3

Hi @Thisnbk

Could you show some example code?
i try to do this code.
it show error that “name ‘odrv0’ is not defined.”

import odrive
from odrive.utils import start_liveplotter

def liveplot():
start_liveplotter(lambda: [
odrv0.axis0.controller.vel_setpoint,
odrv0.axis0.encoder.vel_estimate,
odrv0.axis0.motor.current_control.Iq_setpoint,
odrv0.axis0.motor.current_control.Iq_measured])

liveplot()

and…

What is this meaning?

Thanks!