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--- projects:apex-i [2009/04/28 20:45] – jonsowman
+++ projects:apex-i [2009/04/29 15:43] (current) – jonsowman
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 We initially made the mistake of trying amateur radio, but discovered after a few months that OFCOM prohibits the use of these transmitters in unmanned airborne systems. The alternative seemed to be PMR446, which allows 0.5W maximum transmission power.
-=== The Payload ===
+===== The Payload =====
 After several weeks of research followed by several months of design and manufacture, the payload electronics were completed. They comprise a Linux flight computer attached to radio equipment for two way communication between the balloon and the base stations. A GPS device and a microcontroller were also onboard, the latter taking data from pressure and temperature sensors and returning it to the flight computer. The majority of the electronics was run from a 5V switch mode regulator, running from lithium thionyl chloride batteries. These were chosen for their tolerance to low temperatures and their high power to weight ratio. The imaging device was a servo-mounted Canon camera, controlled by the microcontroller.
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 {{projects:mp.jpg?800|}}
 ===== Team =====
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   * Richard Morris
+  * Andrew Cowan
   * Edmund Mottershead
   * Michael Georgiou