Go Down

Topic: Using 10 photo resistors (Read 345 times) previous topic - next topic

nat45928

Hi,

I wanted to use 10 photo resistors on one Arduino board, is there a way to multiplex an analog port, or could I use i2c sensors daisy chained?

Thanks,
Nat


CrossRoads

Yes to both. 8:1 analog muxes are readily available.
I2C sensors, not sure what you have in mind. I2C ADC chips with multiple inputs are available, can provide higher resolution and faster conversion speed than the 328P's 10 bit, 100uS/conversion ADC.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Go Up