Receiver hardware for IR beam (red eye)?

[MeindertKuipers]

(12-07-2023 09:50 AM)Tinue Wrote:  

(12-07-2023 09:21 AM)MeindertKuipers Wrote:  I will do a quick test with an IR transistor I have lying around here, see if that can keep up the speed.

Two or three pins? The two pin ones are usually way too slow, because they drain the charge too slowly.

I just did a test with a 2-pin IR transistor, and indeed it is way too slow. I also have some 3-pin receivers, tested those earlier. But these are complete receivers that filter the carrier out, and these also saturate after a few frames.
I found some references to photo-diodes which seem to be ,much faster, but these need a small opamp circuit to interface with