[amsat-bb] Re: Non-mechanical Azimuth/Elevation Feedback Advice

Zach Leffke zleffke at vt.edu
Thu Aug 8 16:04:27 PDT 2013


                Thanks to everyone that has responded both on and off list.
For my first attempt at finding a non-mechanical solution I plan to use the
MEMS accelerometer (for El) and magnetometer (for Az) solution.  When still
exploring the Potentiometer solution, because of space requirements and
other factors I was pricing out multi turn potentiometers.  For the gearing
ratios I needed, I required about a 5 turn potentiometer, which at least
according to digikey and the quick search I did, priced to about $20.00
apiece.  The MEMS Magnetometer (HMC5883L) and Accelerometer (MMA8452Q) each
price out to less than $20.00 each on sparkfun, so I'll actually be saving a
few bucks.


That's the plan, at least for the first iteration.  We'll see how it goes!


Thanks again to everyone!


Go Team AMSAT!


-Zach, KJ4QLP

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