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[web/gag.com] / rockets / index.mdwn

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 ![Photo of Bdale and Robert with Horizon just before successful level 2 certification flight](./level2.jpg "Photo of Bdale and Robert with Horizon just before successful level 2 certification flight")
 
 
 ![Photo of Bdale and Robert with Horizon just before successful level 2 certification flight](./level2.jpg "Photo of Bdale and Robert with Horizon just before successful level 2 certification flight")
 

+<img src="level2.jpg" align="right">
+

 Building and launching model rockets is one of our favorite hobby activities 
 right now. While everyone in the family gets into the act in one way or 
 another, Bdale 
 Building and launching model rockets is one of our favorite hobby activities 
 right now. While everyone in the family gets into the act in one way or 
 another, Bdale 


@@ -65,10 +67,32 @@ See some of our launch photos in Bdale's <a href="http://www.flickr.com/photos/2
 
 ## Electronics ##
 
 
 ## Electronics ##
 

-A related project Bdale works on delivers fully open hardware and software 
-designs for rocketry avionics, under the name
+Lots of people make electronics for use in hobby rockets.  This is a brief
+list of only the things we've actually used ourselves.
+
+First off, Bdale and friends develop fully open hardware and software 
+designs for rocketry avionics, under the name 

 [Altus Metrum](http://altusmetrum.org).
 
 [Altus Metrum](http://altusmetrum.org).
 

+We also fly commercial altimeters in some projects.  The cheapest off the
+shelf altimeter we've used and often recommend to beginners is the 
+[Missile Works](http://www.missileworks.com/) RRC2-mini.  At about $80, it
+gets the job done for simple barometric control of dual deployment.  Note
+that while early versions had a firmware bug that we believe is at least 
+partially responsible for Bdale's loss of his first L3 project, recent 
+versions seem fine.  For another $20, the
+[PerfectFlite](http://www.perfectflite.com/)
+[miniAlt/WD](http://www.perfectflite.com/catalog/MAWD.html)
+adds the ability to records the barometric flight altitude profile.  Both
+of Bdale's L3 certs flew with one each of these two commercial altimeters,
+and we often use the MAWD as a backup for our 
+[TeleMetrum](http://altusmetrum.org/TeleMetrum) units during test flights.
+
+The [BeeLine TX](http://www.bigredbee.com/BeeLine.htm) boards from Big Red 
+Bee are radio tracking transmitters that just work.  They require an 
+[amateur radio](http://www.altusmetrum.org/Radio) license, but we think 
+anyone flying big rockets can and should get one of those anyway!
+

 ## Rocketry books we like ##
 
 Note that <i>Topics in Advanced Model Rocketry</i> is definitely not for 
 ## Rocketry books we like ##
 
 Note that <i>Topics in Advanced Model Rocketry</i> is definitely not for