air pressure sensor needed

[sss]

something like the ones used in digital tire gauges ,where can i get those? + datasheet

 

[Conrad Hoffman]

Search for barometric pressure sensors. I think Spark Fun Electronics (Google is your friend) has some. There are also much cruder types, probably closer to the tire application. Try Honeywell also.

 

[error401]

Freescale makes them as well. You probably want something like the MPX5700. DigiKey carries them, they're about $15-20 each.

 

[OzMikeH]

for up to 3 bar with very good accuracy use an automotive MAP sensor off a turbocharged vehicle, gives a 0-5V signal.
They make so many of them they are quite cheap.

standard 1 bar map sensor is sensitive enough to use as a barometer..... you just made me realise how I can build my own barograph, I've always wanted one.

 

[sss]

you just made me realise how I can build my own barograph, I've always wanted one.

glad i could help

just ordered one form freescale
thanx everybody!