episode_torque

Material and code of the episode about calculating torque, and tests with Nema17

The image links to the episode on youtube:

Conversion factors

Here are the conversion factors to go from Newton-meter to kg-meter or lb-inch:

• 1 kg-m = 9.80665 Nm (example: 0.36 Nm / 9.80665 = 0.03671 kg-m)
• 1 lb-inch = 0.11299 Nm (example: 0.36Nm / 0.11299 = 3.186 lb-inch)

Torque graphs (distance vs liftable weight)

You can find the script that generated this plots here: torques.py

Here is the graph for a motor with 0.36Nm:

And here for the geared version (27:1) with 3Nm:

Circuit schematic

Below is the schematic of all parts involved, the arduino script can be found here: tb6600_joystick.ino