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Ok, so here is my problem. I am using a programing language other than the arduino processing (i am using SuperCollider) and i have stumbled upon an anoying problem. When set up a loop reading the value from a given digital port, and hook up a basic switch to that port i often get readings like: true false true false true false , with just one flick of the switch. For some reason, SuperCollider seems to queue those results. Instead of reading the value on the port the moment it's prompted to, it goes and fetches the last unused value. So my own explanation for this wierd output is that arduino reads the values from the port too fast, catching those split seconds when te switch is about to open and about to shut causing a few minor, but noticeable, fluctuations, before it actually shuts or opens. Given this explanation i thought that maybe i can slow the arduino sampling rate in order to avoid catching the fluctuations. Can i do that? Is there another more obvious and easier to solve hypothesis? I hope i was clear enough. Thanks in advance.
And got the following answer:
There are a number of approaches that can be implemented in both firmware and hardware. Link below illustrates a code routine using minimal hardware. http://arduino.cc/en/Tutorial/Debounce Also hardware solutions that de-bounce key matrix of various bus width. Adds to discreet parts count and I/O resources on processor, but it does economize code space and facilitates implementation of small keypads easily. .