[sdiy] Rotary encoder reading.. hardware solution (fast & accurate)

Oren Leavitt obl64 at ix.netcom.com
Wed Aug 11 23:41:06 CEST 2021


Nice!

Some PICs have one or more Configurable Logic Cell (CLC) peripherals. 
You might even be able to configure that logic within a CLC.

- Oren

On 8/11/21 3:27 PM, Jean-Pierre Desrochers wrote:
>
> For anybody who could be interested..
>
> Just found this video yesterday and tried the circuit..
>
> https://www.youtube.com/watch?v=UlehqasO-fo&t=1471s 
> <https://www.youtube.com/watch?v=UlehqasO-fo&t=1471s>
>
> Outputs A and B (CD4013) connected to PORTB of a PIC16F1783
>
> (RB0 and RB1) using interrupts on change (rising edges).
>
> Now I only have to check one incoming pulse on each RB0 & RB1
>
> to increment or decrement a counter.
> Much faster than computing  all the 4 possible states in each encoder step
> to finally get a result.
>
> My interrupt uses TIMER1 (1msec steps), RB0 & RB1 on change.
>
> No missing counts anymore even rotating fast, on both direction.
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20210811/9f3f5854/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 53835 bytes
Desc: not available
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20210811/9f3f5854/attachment.jpg>


More information about the Synth-diy mailing list