Trace the foil traces to see where they end up, or use an DMM/OHM METER.
I think R is receive.
You might find a TSOP4838 is a better choice/range; that’s what I’ve found.
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Trace the foil traces to see where they end up, or use an DMM/OHM METER.
I think R is receive.
You might find a TSOP4838 is a better choice/range; that’s what I’ve found.