Hi guys.
I have an optecal encoder that I got from an old printer.
I tested it to see the value of the output voltage, and I noticed that the voltage does not change much.
I don't understand why the results are coming out like this.
I fed the optecal encoder with a voltage of 3.3v.
Is there a mistake I made or are the results correct?
Images have not properly uploaded. If this is a "slotted opto", as well as powering the emitter side you have to connect a pullup resistor to the phototransistor to 3.3 or 5v. There should also be a current-limiting resistor in series with the LED on the emitter side.
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Doesn't help at all I'm afraid. What are you measuring?
If you click on them, they appear.
This is probably the important one;
What does the other side of the encoder look like, what does the other socket do?
Possibly supply the encoder LED(s)?
Tom... 
Hi,
Google;
hewlett packard q9863 encoder
Tom...
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