Quote:
Originally Posted by Al Skierkiewicz
Hugh,
You are correct that the power does sag during a match. However, these are generally short duration pulses. I would expect that the sensors have some power supply immunity built in that will allow them to survive the short pulses. Since I have no robot system experience with these yet, I cannot tell for sure if we will see problems. We can only wait and see what teams report. I will check with Kate this weekend and see if she did any testing.
Andy was correct in calling you on the 24v power. The rules are specific that the 24 volt output can only be used for the Crio and one 24 volt solenoid module. that about maxes out the current ability of the regulator.
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Al,
Attached is a graph showing battery voltage logged during a match. This is typical when everything is working correctly. It is worse if there are problems. The horizontal data is in 50 millisecond increments.
I would feel much better if there was some boost in that circuit. Please feel free to give this graph to Kate.
I have looked at a few regulators and most seem to cut off around this same voltage.
We were not using the 24 volt solenoid module. The sensor we had connected was low current, so we were within the current ability of the regulator.
According to the data sheet these line sensors draw 35 ma. With three sensors that will make a total draw of 105 ma. It should be interesting...I suspect it will be an issue. As you said we will just need to wait and see.
-Hugh