[aprssig] Tracker3 9600 baud balloon tracker beta offer

Scott Miller scott at opentrac.org
Wed Dec 18 20:50:19 CST 2013

I've had so many inquiries about the tracker board I used on my balloon 
flight this week that I've decided to offer a beta version for sale.  
It'll be after Christmas before I can get the first batch built, and I'm 
not making any promises that the on-board accelerometer or barometric 
pressure sensor will be operating, but it worked great as a low-cost, 
lightweight tracker.


The test flight had deliberately very low lift and it drifted around for 
about two hours before it finally froze after sunset.  A fast-rising 
balloon in daylight would probably be fine, but I'd still recommend more 
than the 1/2 inch foam that we used for insulation.

Our receive station was a TH-D7A handheld with an Arrow beam and it 
worked beautifully.

I'm putting this version out there for a limited time.  If there's 
enough interest, I'll develop it into a more polished product.  Once I 
get the T3-9670's receive code tuned and working at full sensitivity it 
should make a good, compact ground station - but for now you'll need to 
supply your own 440 MHz, 9600 baud receiver.



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