using MPX4115 pressure sensor w/ -18X
- Thread starter bob weir
- Start date
hippy
Ex-Staff (retired)
Peter H Anderson has some code here ...
http://www.phanderson.com/picaxe/spi.html
And you'll find the data sheets here ...
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPX4115&nodeId=01126990368716#Application_Notes
Edited by - hippy on 9/26/2005 4:26:09 PM
http://www.phanderson.com/picaxe/spi.html
And you'll find the data sheets here ...
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPX4115&nodeId=01126990368716#Application_Notes
Edited by - hippy on 9/26/2005 4:26:09 PM
Hippy, your input was most welcome. thanks. all the data at those 2 sites has been collected. an initial perusal shows that pha is focused on barometric readings for the weather. my app is for altitude.
the freescale data lists 'altimeter' as an app'n on page 1 but includes no examples. by going to Google and entering "MPX4115 altimeter"
this site ... http://www.tfs.net/~petek/rockets/altimeter/begin.html
... was found and contains more of the type of info needed, including the altitude resolution in feet possible with 8- , 10- and 12-bit ADC's. this is a great start.
since only 1 pressure sensor is needed
it makes little sense to bother with the MCP3208 and its 8 channel input. for now
the code work will be with the -18x and its 10-bit adc & accept its 20 foot resolution.
a search thru the closed forums was done and nothing turned up for a 4115 and a
-18x . so my hopes are with others also
sizing up these 2 devices for an altimeter
project. and that they will weigh in here.
bw
the freescale data lists 'altimeter' as an app'n on page 1 but includes no examples. by going to Google and entering "MPX4115 altimeter"
this site ... http://www.tfs.net/~petek/rockets/altimeter/begin.html
... was found and contains more of the type of info needed, including the altitude resolution in feet possible with 8- , 10- and 12-bit ADC's. this is a great start.
since only 1 pressure sensor is needed
it makes little sense to bother with the MCP3208 and its 8 channel input. for now
the code work will be with the -18x and its 10-bit adc & accept its 20 foot resolution.
a search thru the closed forums was done and nothing turned up for a 4115 and a
-18x . so my hopes are with others also
sizing up these 2 devices for an altimeter
project. and that they will weigh in here.
bw