Measuring motor current (anyone tried this?)

[Racer26]

Originally Posted by jonboy

What about fabricating a cable out of the Anderson power connectors pig tails the goes between the battery and the robot power connector? The special cable can have either a 50mv shunt or an appropriate length and sized wire to provide a voltage drop when the CIMs are running. Now remove all ckt bkrs but the one CIM under test and measure the voltage drop/current. This cable can be fabricated without interfering with the bot and quickly installed and removed.

Seems like this would be easy enough to do. Take two APP connectors, and just connect them such that you can access known test points (with long enough wire between to generate your voltage drop), and then plug the robot and battery into this current sense cable, then only run one motor at a time, check the current, if you get an outlier, you know where your problem is.