sorry if this sounds like a newbie question, but I spent all night yesterday searching the net for answers..
I am trying to connect a pressure sensor (Honeywell SX15GD2) to my arduino, and I could not for the life of me figure out which pin goes where.. I have the 2009 board..
has anyone worked with this before? can you please share? I will be very grateful
The datasheet for the Honeywell SX15GD2 sensor can be found here: http://datasheet.octopart.com/SX15GD2-Honeywell-datasheet-7786.pdf (page 3, the GD2 model)..
This sort of sensor is designed to be placed at the front of a differential amplifier not connected directly into an arduino pin. As you can see from the data sheet the change you get out of the sensor is only in the order of a few mV per PSI. You don't say what pressure range you want to measure but I am guessing it is more that several PSI resolution.
It is not the sort of sensor that is easy to use for beginners.
There is a text I wrote many years ago about it here:-
http://www.doc.mmu.ac.uk/STAFF/A.Wiseman/Acorn/BodyBuild/BB_86/BBC37.txt
and the diagrams that accompany it here:-
