Short term (next 2 - 3 weeks) aim - develop lifting body system - aim to assemble next weekend - launch following week:-

Steve to:

• Send TX (and lead + plug) done
• Send Servo Driver done
• Make Servo Current sensor and power regulator + Li-Ion batteries.
• Finish lifting body model, Drop test and determine glide ratio - produce scaled version for predicted weight
• Work out antenna system (copper strip on inside surface of lifting body?)
• Make 3.3V FET pyro-drivers done

Ed to:

• Provide deatils of low voltage (3V) power FETS (for cutdown/chute deployment) - done. Nice one ed! I'll pop down to RAPID Monday/Tuesday

James & Ed to

• Work of steering software begun - gps parser complete - now doing maths
• Get GPS on order

James to:

• Aquire Nokia mobile phone done - jcoxon

• Gumstix Connex 400xm
• Audiostix 2 Daughter Board (+ gumstix + gps = 30g)
• EM-406A GPS
• Servo driver (20g)
• Servo (25g)
• 2 x Cutdown circuits (20g each)
• Radio transmitter (25g)
• Lifting body
• Piston released parachute

Total Weight = 150g (gumstix,board,gps,servo,servo driver,2x cutdown circuits, radio transmitter)

• Wire up
  • GPS unit -done
  • Servo driver
  • Radio
  • Cutdown circuits
• Complete Software

• Design Lifting Body
• Construct

• Finish maths software

• gpsparser.c - C program that opens the serial port and receives NMEA strings, searches each string for either $GPGGA or $GPVTG and then splits these strings into float variables converting long and lat into decimal.
• servo2.c
• navsoft.c - Combining GPS parser with Servo 2 and some calculations to work out distances and bearings - also shifts the servo accordingly. Jcoxon version of adjustment - will update with more advanced edmoore version.
• navsoft2.c