RPi PICO Interfacing with Quadrature Encoders

This video covers programming and interfacing rotary encoder switches and motor encoders to the Raspberry Pi PICO microcontroller. Back ground information is provided on applications for both types of encoders. Several program examples are provided and explained covering practical applications in user interfaces and for direction, distance and velocity monitoring of motors..

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[quaternion-pi]

Wow, worth every minute of viewing. Very clearly explained - a very challenging task. Thanks for all your effort, much appreciated.

[syrusk]

What a fantastic video! I came here looking for some info for onverting a ps2 mouse to quadrature for an acorn archimedes computer but have learnt so much more

[nigelworwood]

I come back again to refresh my memory - Thanks

[duncanmarks]

Hi, very good explanation and an elegant way of dealing with switch bounce without using external components. Thank you

[BartMcCormick]

This is a very well done description of rotary encoder decoding in the main loop. The length of the video is quite appropriate for anyone wanting to actually learn about rotary encoders. They are as ubiquitious as you showed with the many examples. Thank you.

I was really hoping you were going to show how to utilize the GPIO programming so the decoder routine and delay times between reads didn't use up any time in the main loop. I am, perhaps mistakenly, thinking that that is the purpose of the GPIO state machines programming - to offload repetitive i/o tasks from the M0 cores.

I keep searching high and low for such a method, and the only one I have seen uses up all 16 interrupt spaces as a jump table state machine. I think it probably could be re-located using an offset, but that is above my skill level at present on the Pico.

I subscribed and will look for other videos you have done on the Pico. I think the Pico is just starting to take off and develop a base of knowledge like the Arduino microcontrollers has. Sooo much more power!!!

[Ewig_Luftenglanz]

is there a way to make all these utorials in C? your vids are amazing but there is a severe lack of documentation onhow to do stuff with rasberry pi in C :/

[ankurbhatnagar]

This is exactly the video I was looking for. Thank you for making it.
However, I can't get this to work. I am getting this error: name machine is not defined. Apparently I do not have the machine library installed.

I am using Raspberry Pi 4B. Using 'pip install' I have installed machine as well as micropython-machine. But it still does not work. So how can I install the machine library?

[tiarakusumadewi]

very helpful video, Sir. Thank you. The click encoder's code works so well. However, regarding the shaft encoder, the code does not read the data. I have make sure to follow all of your instruction. Please help me!

[carloscarvicais]

Hi, very usefull and well explained.
Can you update downloads site, files are not there ?

[PaulaBean]

This is the stuff I was looking for. You are leveraging interrupts, much better than polling. Are there any debounce issues?