Encoder from HP printer

Other Hardware Sensors
1

I need help to identify pinout (and use whit Arduino Uno) optocoupler from HP jet printer.

Photos in attachments.

Thanks in advice

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2

Searching pinout just for optocupleour, not for entire board

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3

Solved.

More info : How to master an Hp printer optical encoder carriage | Cuverita

In my case :

HP.jpg
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4

hi,

should i supply 1.6v ?

i measeure the pins you point while power up with 3.3v but cant see 1.6v over there

5

i just insert 470ohm between IR LED's ground pin and 3.3v and it works now.