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Real time BARO-2nd MAP how to???
Posted: Wed Apr 19, 2006 5:51 pm
by Joethemechanic
I looked for awhile and couldn't find and doccumentation on how to wire in the 2nd map sensor for real time BARO correction, I have a MSII V3 with 2.33code.
Could someone point me in the right direction?
Thanks, Joe
Posted: Wed Apr 19, 2006 11:08 pm
by masterx81
From the MegaManual:
To add an independent baro sensor to your MegaSquirt-II, use an MPX4250AP (the standard MS sensor). Run leads from:
sensor pin #1 (signal) to header position X7 on the MegaSquirt PCB through a 1K Ohm resistor,
sensor pin #2 to ground (the non-banded end of D1), and
sensor pin #3 to 5 Volts - use the via at the "M" in the copyright notice near the existing MAP sensor.
You can use other 0-5 volt pressure sensors, but you will have to calibrate it using the 'Tools/Sensor Calibration' dialog in MegaTune.
You can use the proto board (like i have done).
From what i've understood, the schematic (and port connection on the CPU) is the same as the msns-e.
So you can also get the schematic here:
http://megasquirt.sourceforge.net/extra ... ection.htm