Hey,
I like your site. Just curious, what happens if you don’t debounce the encoder? Because I have used encoders without any problems and no debouncing. I used the code from here: http://forum.sparkfun.com/viewtopic.php?p=65052
Cheers!
Nothing really, except you have that bounce noise generated, and depending on what you are doing, it may not matter at all. Audiophiles like to quiet down everything in the system, so getting rid of the bounce noise is a good idea.
Hardware debouncers do not work 100%. You still get spurious signals that would trigger a wrong reading. It is a good idea, however to use h/w debounding to reduce extra noise generated by the encoders.
You will always need to have s/w debouncing.
It’s a shame the optical & magnetic RE are so expensive. With or without the debounce hardware, I’ve had trouble getting what you would call a smooth response from the encoder.
You will always need some s/w debouncing with mechanical encoders. I use the ones with “detents” and those work very reliably with the debouncing. There are also chips that are designed to interface to mechanical encoders and would do the clean up…
H i F i D U I N O 
Hey,
I like your site. Just curious, what happens if you don’t debounce the encoder? Because I have used encoders without any problems and no debouncing. I used the code from here:
http://forum.sparkfun.com/viewtopic.php?p=65052
Cheers!
Hi,
Nothing really, except you have that bounce noise generated, and depending on what you are doing, it may not matter at all. Audiophiles like to quiet down everything in the system, so getting rid of the bounce noise is a good idea.
Have you tried the debounce hardware filter in your setup, I cannot get it to work?
Hardware debouncers do not work 100%. You still get spurious signals that would trigger a wrong reading. It is a good idea, however to use h/w debounding to reduce extra noise generated by the encoders.
You will always need to have s/w debouncing.
It’s a shame the optical & magnetic RE are so expensive. With or without the debounce hardware, I’ve had trouble getting what you would call a smooth response from the encoder.
You will always need some s/w debouncing with mechanical encoders. I use the ones with “detents” and those work very reliably with the debouncing. There are also chips that are designed to interface to mechanical encoders and would do the clean up…
I’ve just got my DAC 1 going with your code & the Rotary Encoder I a using with it seems to be more stable that the one I used for my DAC 2. I haven’t bothered with the hardware debounce, for what it’s worth its one of these. http://au.mouser.com/Search/ProductDetail.aspx?R=PEC09-2320F-S0015virtualkey65210000virtualkey652-PEC092320FS0015
Thanks this helped me so much!
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