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?
Do you mean you want to read the position of the encoder in node-red?
If so then how is the encoder connected to your computer, and what sort of computer and OS is it?
Yes i want It to read the position he Is In and send that input, im using it on as raspberry pi 4 model B
You have not answered that question.
So the GND Is conected to GND (pin 9)
The + is conected to 3.3V (Pin 1)
The DT is conected to GPIO17 (pin 11)
And the CLK Is conected to GPIO 18 (pin 12)
Do you have some software that allows you to determine the position, or some algorithm that has to be used to determine it? If it is designed for a pi it probably comes with some s/w.
No I dont have a software that allows that, and yes it comes with an SW but I didnt conect it to anything
I just connected the encoder to the pi, Im not using anything besides the pi, de encoder and of course the node red
This thread might help
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Just for as an exercise - I've come up with this flow - try connecting your DT/CLK signals to the two inputs and see if it give any sensible results at all.
Put CLK signal into top input
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I don't have any encoders to check it with but it seems to work for slow moving test signals
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thank you, Ill try It when I have the time to
I found an encoder and it works - updated flow with Pi GPIO nodes added
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1 Like
More compact version using a function node
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If I apply that directly into the leds will It know the location? Or It's just going to turn every led on once a start rotating?
I was just supplying you with the info on how to read the encoder
I don't really understand what you want to do with the information
What exactly is your project about?
Using an encoder to be able to indicate the positions manually, whenever an input receives signal from the encoder, turn on the leds that represents the input. I want It to turn on my leds In order
You can't tell an absolute position with that sort of encoder. You would need to put it in a known position and then track the position from there. You have to track the sequence of inputs to know which direction it is turning and how much it has moved.
And how can I do that?
Actually, looking at the flow provided by @cymplecy it appears that it gives you a notification of each movement and in which direction it is. Have you got that bit going? That is the most complex bit, probably.
Then you would need to decide what you want to happen on the dashboard in order that you can tell node-red that it is at position zero. Then implement that using dashboard buttons or whatever you decide on.
Then to keep track of the actuall position feed the output from the given flow into some logic that keeps track of the current position.
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Thank you Colin, the only problem Is that Im new In node red and I don't really know how to control the encoder on the dashboard
