An Analog devices ADXL202 accelerometer might be good for this application. Joe ----- Original Message ----- From: "Wade Carpenter" To: Sent: Friday, August 24, 2001 2:53 AM Subject: [EE]: "Tilt-o-meter" for RC plane > Good Day Everyone... > > I am building an RC plane (electric powered glider, specifically), and I > plan to at one point have it controlled entirely by a PIC. I'd have to say > that would be a lot of fun, even if the plane crashes! But I digress. > > First thing I plan to do as far as PIC v/s Plane goes is to make a circuit > to level out the wings in flight. i.e. if one wing dips, it will > compensate. I'm not worried about controlling the actuators on the plane or > anything like that (yet) but more about the sensor that is to sit in my > feedback path. I need a "tilt-o-meter!" . I'm sure it's not called that! > > Anyway, here's where I've started. Right now I have, through my co-op job, > acquired a Honeywell HMC1001 Single Axis Magnetoresistive sensor. I figured > at first that it would do the trick perfectly. Then I found out how much it > costs if I have to replace it.. somewhat less than ideal!! Regardless, I > have started to give it power and measure outputs, etc., but no matter which > way I tilt it from vertical, the signal changes. So basically, it will pick > up some change if either wing dips down OR if the plane is climbing or > descending. > > I was wondering if there might be an easier way? I'm very new to the > wonderful world of instrumentation, and every day I'm learning that there > are a billion tricky little sensor floating around out there, and I'm sure > one of them must be perfect for the application. > > So if you know which one it is, kindly let me know!! Or if you have any > other ideas/questions/comments/etc regarding the project, please let me > know! > > Many thanks, > > Wade > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu