i've found some MPX10DP at very cheap price, do you know if may i use them?
As Boriz says really - they
might be OK, depending on
exactly what you want the pressure sensor to do.
Have a close read of the data sheet - a 30 second look told me:
- they are
differential sensors i.e. they have two sides and the output voltage depends on the difference between the pressure between the two sides
- you would have to make sure you got the correct physical package for your requirements - there are several
- the output voltage range is about 20mV to 60mV which you may find difficulty with in terms of interfacing to the PICAXE, and require some sort of op-amp circuit to bring that voltage up to reasonable measurable values (and attention to detail in that amplifier to avoid introduction of noise/gain differences with temperature etc)