what do you get when you mix the following:?
arduino ( actually a RBBB from moderndevice.com )
gps module ( a LS20031 from http://www.sparkfun.com/ )
barometric altitude sensor ( a SCP1000, also from sparkfun, gives me much more accurate altitude info - accurate to 9cm vertically optimally)
fuel flow sensor ( an impellor flow sensor from the UK see notes here )
battery ( from a camcorder, as it's high power-to-weight ratio is excellent!)
SD Card ( an el-cheapo with SPI capability)
and a wireless serial data transmitter...
Inspiration ( and some bits of arduino code) taken from: http://www.ladyada.net/make/gpsshield/use.html
It's a work-in-progress:
DONE:
* Arduino, GPS, SENSOR are all mounted
* their power lines are wired up and tested.
* rx/tx for the GPS are wired up and RX is tested
* NMEA data to the arduino works through NewSoftSerial.
* NMEA is being converted to human-readable Lat/Long/Time/Date and displayed via USB/Serial debug line ( and soon velocity and altitude too)
TODO:
* wire SD card to arduino in a removable way.
* wire battery to system in a removable way.
* wire altitude sensor MISO/MOSI data lines to arduino with a 5-3.3V resistor divider on the TX ( MOSI ) line.
* wire flow sensor and 10K pullup resistor ( signal to +) to arduino.
* wire the magic "go" button.
* software to read both sensors
* software to write all aquired data to SD-card.
* software to transmit the contents of the SD card over wireless 450Mhz module when the 'GO' is pressed.
* software to clear the SD card when appropriate presses are made on "go" button. ( eg 3 in quick succession or something ?)
* ... more?