An open source, hackable, $50 audible altimeter for skydivers.
Back on KickstarterAudible altimeters can go for $200+, and often have interfaces that are confusing and unnecessary. This audible is different:
- Safety first
- 100% open source and hackable
- Always on operation, with an estimated one year battery life over 500 skydives. Set and forget!
- Four different modes, with infinite customization when you hook it up to your computer
- Low battery alarm when in the plane at 500 feet, and right after landing
- No annoying LCD
Partlist
- Atmel Atmega328P microprocessor running at 1Mhz
- Bosch BMP180 barometer
- TDK 4kHz, 3 Vo-op PS1240P02BT piezo speaker
- 2 position DIP switch
- FT232RL USB to serial UART interface
- MicroUSB port
- 2x 20mm CR2032 coin cell battery holders
- Various 0805 resistors and caps, diode
- 2x3 ISP header