Incremental encoder for measuring system

[josecruz]

Hi community.
Im a newbie to node red and after google a lot, still unable to get a solution or direction.
I have a incremental encoder with 2048ppr (AMT-103) attached to a moving table that i want to use to make measurements using a Raspberry Pi W.
The encoder is attached to a leadscrew and when i rotate it (doing it by hand, later on will add a motor) i can move it to the position i want.
The main goal is to implement a flow that allows me to calculate the distance between 2 points, and therefore getting the distance.
There will be a factor to define the distance per encoder step in order to get the distance.
The main doubt is if this can be done in node-red, or if i also need to add encoder coding in phyton?
If i use a code to get the encoder counts how to get them in node red?

Your expertise is very welcome.
Hope you guys can help me.
Stay safe

[Colin]

@josecruz

The main goal is to implement a flow that allows me to calculate the distance between 2 points

You haven't really explained what you are trying to do with the pi. Do you mean the encoder will be connected to the pi and you want node-red to monitor the position and do some calculations? If so that should be ok. Search the forum for encoder, also try the flows site. I am sure there has been discussion of these.

[josecruz]

Hi Colin,
Sorry i didn't explained it very well, and many thanks for the feedback.
The incremental encoder is connected to the Pi ( Pin2 for channel A and Pin3 for channel B), and i want to use node-red to calculate and display the values.
I will give another try in the forum.

[Colin]

This looks like a good place to start

Using rotary encoder

How do I make an rotary encoder work properly in node red? I have multiple inputs and I want to control them using an encoder, any ideias? [image]