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Showing results for tags 'MAP'.
Decided to start a project based discussion regarding the BP I posted http://forum.43oh.com/topic/4301-manifold-absolute-pressure-sensing/ so as to not clutter that up. For those that haven't visited that, here's a re-cap: MCU samples an MPX4250A absolute pressure sensor, takes the reading and looks up a value from a table, and sends that to a DAC for output. It's actually two DACs though so there are possibly two values to read and send. There's an SPI eeprom for storing the values and the DAC's are set over SPI as well. There will be software that interfaces to it, at least for
I have to mention RobG and cubeberg have helped with this. THANKS!!!! What it is, is one pressure sensor affecting two, 16 bit DAC output channels. What it will do (hopefully ;-)) is read an (automotive) industry standard MAP (manifold absolute pressure) sensor- in this case an MPX4250A 20-250 kPa (kilo Pascal) / 2.9-36.3 PSI sensor (~100 kPa / 14.7 PSI is ambient pressure at sea level), and appear as up to two potentially different sensors. Possible uses could include: replacing obsolete MAP sensors with more readily available ones because of different output range / scaling; fooli