Powering the IR detector from +5V instead of 7+ V.

[Dad1279]

Dave, I would agree with that logic, and was surprised by the Q&A answer.

However <R55> reads as follows:
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• The Robot Controller power feed must be protected with a 20A circuit breaker. No other electrical load can be connected to this breaker.
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• Power feeds to custom circuits and additional electronics must be protected with a 20A circuit breaker.
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So I intend to build a 'custom circuit' consisting of a 5v regulator, on a separate circuit. This will power the IR receiver, etc.

I think it is a mistake to power the IR circuit directly from a 20A circuit anyway. (A potential of 20A going through the ribbon cable) The 3 terminal external regulator will also limit the current.