multiple inputs

Forum 2005-2010 (read only) Hardware Interfacing
1

hi, I can't find any examples of interfacing multiple inputs (for example a potentiometre and a piezo).
does anyone has such an example ?
how would you do to send multiple sensors values through the serial port to processing (there only "one sensor at a time" examples on the arduino meets processing page).

thanks

E

2

ok the previous post wasn't so clear.
I just want an example of this :

[potentiometre, piezo, push button]--->arduino----->serial----->processing

not just an example using ONE sensor .

3

hi

you have to write it yourself...!

If you are reading one sensor, as in:

pin0Data = analogRead(0);

and you want more, just write them in:
pin0Data = analogRead(0);
pin1Data = analogRead(1);
pin2Data = analogRead(2);

Then, if you want to send them to processing, just add them to the data being sent out the serial port.
Serial.println(pin0Data);
Serial.println(pin1Data);
Serial.println(pin2Data);

Daniel

4

yes I got that already.
I know that I can tell processing to read serial until a line feed or carriage returnbut how can processing detect what sensor is sending the data.

5

You can print a character before the sensor data that corresponds to the sensor you're using. Then, in processing, check the first character of each line.