Rocket/Balloon Computer:

Thanks to Paul Breed who designed this board for his
own project and was generous enough to let us use it!!
The rocket and the balloon each have one of these boards.
I don't know the status of these boards regarding whether the design can be used freely or not.
To find out this information you can contact Paul Breed.
Once I get the code finished I am going to make a free design possibly with the transceiver built in!

Interfaces with GPS, on-board air temperature, on-board air pressure, accelerometers, pyro-systems and two-way radio.
Here is Paul Breed's projects website as well as schematics for this board.

Oncore 12 channel GPS:

x,y,z position, x,y,z velocity and time is read by the computer using standard NMEA interface.
Supplier of these GPS boards.
There is an 18000meter and 515m/s limitation with most GPS units including this one. When the rocket is above 18000 meters (~60,000ft) in altitude and travelling faster than 515m/s (~1100miles/hour or 1854km/h) the GPS will not output valid data. The GPS will work in all other cases, for example it can be above 18000 meters as long as it isn't going faster than 515m/s, and it can be going faster than 515m/s as long as it isn't above 18000 meters. As long as the rocket is travelling slower than 515m/s at apogee the GPS will work no matter how high it has gone, and all the way down till landing the GPS will work unless the rocket goes faster than 515m/s towards earth.

Two-way Radio:
The rocket and the balloon each have one of these two-way radios.
300mW transmission power.
70cm amateur band.
Supplier of the two-way radios we use.

Rocket Software:
Designed using the GNU avr-gcc under linux
Link to avr-gcc GNU software.
download C code for the rocket computer.

Balloon Software:
Designed in GNU avr-gcc under linux as well.
download C code for the balloon computer.

Ground Based Software:
Designed in Linux using the AX.25 kernel module and the soundcard as a 1200 baud modem.
download source for the ground based communications.

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