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Originally Posted by Ryan O
...it always said command 1,2, and 4 were 0 (being used), and 3 was 1 (not being used).
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Your comments in parentheses are precisely backwards. The IR board outputs are logic 0 when inactive, and logic 1 when active. Does that correction help you identify the problem?
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In bench testing, this worked fine.
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If you saw multiple signals high and a single one going low while testing, there was something wrong. It sounds like you might not have had a common ground between the IR board and the RC.