scanning multiple flex sensors

[vijayjadhav.595]

Hi...
I need to interface 10 flex sensors to an ATMEGA 32U4 over a single adc channel and find out which one of them was bent/flexed.
can any one one help me with this.

cheers...
Vijay

 

[chuckey]

We have no idea of the signal levels coming from your sensors.
Frank

 

[vijayjadhav.595]

We have no idea of the signal levels coming from your sensors.
Frank

hi...
the signal level will be from 0-5 volts.

 

[crutschow]

You could use a multiplexer such as the CD4067. You change the mux address to check all ten signals in sequence.

 

[chuckey]

You can sequentially scan each input , note its voltage and its input number, then do the comparison in a micro computer chip and send out the input number. You could have a diode in series with each sensor then a buffer capacitor and a buffer amp. This is meant to then represent the maximum signal of any input, then using this as a reference, compare this voltage with the voltage on each sensor, you should then get 9 lower and one equal, which is the maximum output sensor.
Frank