Thanks to Emmanuel for sending in this neat high altitude balloon project! Check out more info here.
Titan 1 is a high altitude balloon (HAB), sensing the earth’s atmosphere and magnetic field up to a height of 35 393m.
Titan 1 consists of a helium filled latex balloon (type HAB-1500) with an attached parachute (36” diameter) and a payload box (dimensions: 22.5×22.5×19.5cm).
The payload box holds the flight computer (Arduino Mega 2560) which logs position (GPS), pressure, temperature, humidity, luminosity, earth magnetic field, acceleration and spin, measured by a variety of sensors.
Images are captures every second with a GoPRO camcorder mounted inside the payload box.
Additional to logging the data the flight computer transmit its position (longitude, latitude, altitude) together with flight computer status information approximately every 14s with a radio module. The radio module has transmission power of 10mW and the transmission is done as Radioteletype (RTTY).