Hi All - I haven't messed with my Arduino in a while but I am picking it back up for a small project.
I have a pressure transducer that is powered by an external power supply at 24V, and it outputs a voltage from 1-5V that I can convert to a pressure. Am I safe to just take the output from this transducer and go right into A0 on the Arduino to read the voltage? Just want to make sure I won't damage my board..
Thanks!
Put a resistor (maybe 5-10k?) between the analog input and the sensor, so if the sensor outputs a slightly higher voltage than it should, it can't push enough current through the chip to damage it.
Ok very good, thanks! Do I need to connect the ground of the arduino to the ground on the pressure transducer, or am I ok to just go straight from the transducer output, through the resistor and to the A0 pin?
A single wire can act as an antenna, at best. For a circuit a second wire is needed, mostly connecting the grounds together.