Reading Mux Analogue Inputs

Forum 2005-2010 (read only) General Frequently-Asked Questions
2

I'm not sure where you are getting this 8* from.

The procedure I would take is as follows:

  1. Select an analogue input through the mux
  2. Wait a short preiod of time for the effects of switching the mux settle down.
  3. Read the analogue value.
  4. Select the next analogue input through the mux.
  5. Goto step 2.

This will be the fastest you can read all the inputs. You may want to read them less often (it depends on your application) so you may want to set it up so that you read a new value every, say 25ms. This will give time for the Arduino to do other things besides reading pot values.

Mike