HelioSS 1 is a launch carrying experiments from Sponne School in Towcester. It will be launched from the CUSF site at Churchill College.

The flight computer is based on a LPC-H2214 ARM development board from Olimex. It also includes:

• FSA03 uBlox GPS receiver
• Radiometrix NTX-2 radio transmitter
• Several TC77 one-wire temperature sensors

A 12 bit A/D converter is used to provide the signal to the NTX-2, allowing fine frequency adjustment. By adding a temperature sensor mounted directly to the NTX-2, we hope to minimise the usual frequency shift observed as the NTX-2 cools.

The payload includes:

• Two cameras (a Canon A480 and a Canon A560), both running CHDK
• A thermal experiment measuring the temperature of four targets, each painted a different colour
• An experiment to demonstrate Boyle's Law using party balloons
• A radiation experiment using a medical radiation dosimetry badge
• An experiment to observe the effects of high altitude exposure on Brine Shrimps