- Warwickshire, UK
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I think that your IR eye wiring may be incorrect:
- On the MCL2A transceiver the Green wire is for +5v. (Green became IR data in later devices, such as BS3 sensor)
- I think that the White wire is IR data (but if that doesn’t work, try Yellow!)
- Brown is indeed Ground
Leave Grey and Yellow (or White) unconnected.
Guessing again, but to test the IR-eye connect a 5v supply to Green (+5v) and Brown (Gnd) and transmit with a B&O remote. A red LED should glow in response.
However, despite all that I have said above I am unsure whether the Passive will respond at all without an ML connection.