Portola Valley, CA

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Software guy

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Easystar APM

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Harry Cheung posted a discussion
Just curious how it was determined that >3000 would be the right value to expect from the airspeed sensor to indicate that it's connected. I have a APM 1.0 running 2.12 and MPXV7002DP sensor, and after trying 4 different BECs, I can only achieve an…
May 29, 2011
Harry Cheung replied to Harry Cheung's discussion Testing MPXV7002DP Airspeed Sensor
"So it turns out that the value that's getting read off is too low. Depending on what kind of BEC I use, I can get values ranging from 2940 on higher. I just have to lower the 3000 value that's being used now to determine if it's connected."
May 29, 2011
Harry Cheung posted a discussion
I just purchased a MPXV7002DP airspeed sensor, and it's not being detected. Is there a way to determine if the sensor is any good?  My setup:APM 1.0 running 2.12uBlox GPSMPXV7002DPXBee PRO 900
May 28, 2011
Harry Cheung left a comment for Jack Crossfire
"Yeah, I should have included that. Anyways, I added a link to the ublox module I have, it's this:

Apr 8, 2009
Harry Cheung posted a discussion
Hello all,I've built a daughter board and now I'm at the point of connecting the ublox to it, but looking at the ublox, I can't seem to find any pins/leads to connect it to the daughter board. Can anyone who's using the ublox send me a pic of their…
Apr 8, 2009