ChrisLaurie
Member
Hi All
I know I can read an 8x8 matrix of buttons using two 4051 multiplexers and a lot of diodes. Can one do the same for analog inputs (potentiometers)? What I am thinking is that the +V of the pots are the columns to which I send a value of 1023 via one multiplexer and then I the pot outputs are the rows, using the same reading method as for the button matrix. Is this feasable? Do I need diodes and if so on the input or the output side?
What about timing? Do the pots have a lag time once powered (via the columns) before I can read them?
Cheers
Chris
I know I can read an 8x8 matrix of buttons using two 4051 multiplexers and a lot of diodes. Can one do the same for analog inputs (potentiometers)? What I am thinking is that the +V of the pots are the columns to which I send a value of 1023 via one multiplexer and then I the pot outputs are the rows, using the same reading method as for the button matrix. Is this feasable? Do I need diodes and if so on the input or the output side?
What about timing? Do the pots have a lag time once powered (via the columns) before I can read them?
Cheers
Chris