Can’t get rotary encoders to work

[vollstock]

I have a Quadrature Encoder Phidget attached to a VINT Hub.
I bought a draw wire encoder and it works flawlessly.

However any other encoder I am trying to connect does nothing.

These are the ones I tried:

• Mujie ME38S6-C-(600)-B5G2
  E38S6G5-600B-G24N (Some chinese encoder from Amazone)

Both encoders work with 5 Volts and function properly attached to an Arduino. I connect them the same way as the draw wire encoder:

Red: 5 V
Black: Gnd
Green: A
White: B

Any suggestion what to try? I really don’t see the difference?!

Thanks

[mparadis]

Looking at the part number for the Mujie encoder that you bought:

ME: Incremental encoder
38: 38mm outer diameter
S6: 6mm Solid shaft
C: Open collector
600: 600ppr resolution
B: Output signal A/B
5: 5V power
G: Side outlet
2: 2m cable

It looks like that encoder uses an Open collector interface rather than push-pull. The ENC1001 only supports push-pull interfaces because they're the most common these days. You can still interface an open collector encoder, but you'd have to add your own pull-up resistors. This would mean putting 2.2kOhm resistors from both the A and B wires to the 5V wire. Since you already have wire connectors this should be an easy fix.

[vollstock]

Thank you so much!
That worked like a charm

[vollstock]

Do you have any idea, why the encoder sends 2400 pulses per rotation?
It’s the exact one from the picture, that is supposed to send 600.

[Patrick]

The Mujie 600P/R really means 600 cycles per revolution. There are 4 pulses per quadrature cycle.

-Patrick

[vollstock]

Ah ok, I get it. That is a misleading naming convention then. Thank you so much for clarifying this

So if I understand it correctly that actually gives me a higher spatial resolution of 2400. Nice.