Digital trimming using POT or other instead of Push Buttons

[imranahmed]

Please let me know that there is anything available that can be use in place of push button(for setting).

I built a ammeter using ATmega16 @8MHz int.osc , AVR Studio 4 and need to set ampere
by using any rotating thing like POT or other instead of Push Buttons.

NOTE: All Settings of ampere should be digital.

 

[ucanel]

You may use rotary switch
or rotary encoder.

 

[horace1]

I have used a AB DIGITAL ENCORDER which gives a QEI encoded output for a similar application
as the encoder is turned it scrolls thru a menu on an LCD ( because the encoder gives direction iit is simple to scroll up or down) and a press of the encoder selects the required option

 

[imranahmed]

Do you refer its picture?
Or link?

 

[horace1]

Or link?

example rotary encoder:
https://uk.rs-online.com/web/p/prod...&istBid=tztx&gclid=CPHR89SXkMACFc3HtAodJlUA8g

output is QEI A and B signals - some microcontrollers have a QEI interface built in otherwise you can decode in software

 

[paulfjujo]

hello,

A similar rotatif encoder
**broken link removed**
and example in C18 code