Optical encoder Agilent H9731

Hi guys I'm trying to wire an optical encoder i got from a ink printer, to the Arduino. The encoder have 4 wires , i found out the datasheet ( http://pdf.datasheetcatalog.com/datasheet2/9/0pql04k9oru8uez14wx9h3d3657y.pdf )

Now, if i connect directly everything: Vcc to arduino 5v GND to arduino GND ChanA to interrupt 2 ChanB to digital pin 4 Everything works fine but the encoder get warm. From the datasheet i read : Load Capacitor 100 pF, 3.2 kΩ pull-up Does it mean that i've to series a 3.2kohm resistor between the 5v and Vcc pin and a parallel capacitor of 100pF between 5v and gnd?


Hi h1tm4nakah,

I am trying to use this same optical encoder with Arduino and cannot get it to work. Did you ever figure out your issue?

Thanks, Jeremy