Receiver hardware for IR beam (red eye)?

[Tinue]

(12-07-2023 04:07 PM)Martin Hepperle Wrote:  There are plenty of IrDA Transceiver modules should probably work for this purpose.
One of these modules is what you find inside the HP C4103.

Thanks! I wonder if this one is good enough: https://www.vishay.com/docs/84672/tfbs4650.pdf

The one in the C4103 is rated for 4Mbps, but I think 115200bps is enough.
The data sheet says "For input pulse width 1.6 < tTXD < 23 μs: Optical output pulse duration: tTXD + 0.15μs". Given that one pulse of 32kHz is 15.26μs, this looks fast enough.

It can't send and receive at the same time, but this is not required.