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Originally Posted by wkethman
wow. so no one uses a sensor like this on their robots to automatically power down certain systems that are less critical on their bot when the battery is almost gone?
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Speaking from experience and from hearing many other teams, most swap out a battery after one or two rounds as to not worry about impairing the robot capability. While there is an ability to measure with a custom circuit and tell the controller there is low power turn off this device, I don't recall hearing of anyone using such a device. This would be a very simple circuit if you wanted to make it, but build at your own risk. you would have to take the power at the breaker panel (fed off a 20 breaker of course!) and feed to a circuit that will send a signal to the controller telling a relay or victor to turn off if voltage gets to say, below 11.2 volts. But the biggest problem you may have is the battery can take deep discharges for a second or two then be fine for the rest of the match.
As I said, an easier solution is just to swap out batteries each match with a freshly charged battery.
-Mike