I would like to use the Arduino Due to read the analog voltage output of a sensor. The output varies between 0-10V. Obviously, I can not connect the output directly to an analog pin, so what are my options?
- I could use 3 equal resistors in series to devide the voltage by 3 (so 0-3,3V to the input of the Arduino). Using the 12bit ADC of the Arduino Due I should be able to get a nice resolution.
- Use an ADC IC, for example this one: http://www.produktinfo.conrad.com/datenblaetter/1200000-1299999/001253795-da-01-en-IC_A_D_CONV_16B_LTC1605IN_PBF_DIP_28_LTC.pdf, but it is quite expensive...
What would be the best way to do this? Any more ideas? I'm assuming 3.3V is the maximum for the analog input pins of the Arduino, or is it just for the digital ones?
Thanks for the advice!