Rotary encoder installation

Development Tools IDE 1.x
1

Hi All,

I got this rotary encoder and was wondering how I should connect it to my Arduino.

800×800 66 KB

It has 4 wires, +, -, 01 and 02.

I tried to find information from the manufacturer, but not luck.

Any info helps.

2

Do you have a part number? web link?

I would suspect it works like this

3

I got it from here: ROTARY ENCODER, OPTICAL W/100 SLOTS DISK 5V TTL

But it is the same as these two other links:

https://www.aliexpress.com/item/4000104861972.html

I was looking for something that shows if I need to put resistors in the circuit or a diagram.

4

Update.

So I connected it like this:

  • 5V

  • GND
    01 > 02 (INPUT)
    02 > 03 (INPUT)

I am getting the reading fine (besides the fact that I didn't find the correct angle for this disc to work properly yet). However, I am concerned that I should add resistors somewhere in the circuit to protect the encoder and the board.

Should I really worry about it?

Thank you