This is an altimeter for high power rocketry. Sources include the PIC Micro firmware, Eagle PCB layout, and Windows configuration/log download program.

Features:

• dual payload deployment
• altitude and deployment logging to non-volatile EEPROM
• native USB support for configuration and log downloading
• audible max altitude readout
• pre-launch readiness audible indicator and rocket recovery/location beep
• simple 2-layer PCB with mainly SMT components designed to be made at home

Note: I started this project back in 2007 when I was in college but life got in the way before I had a chance to complete it. I've uploaded it here for archival purposes and maybe someone will find it useful. If you are looking for an open source altimeter, I'd highly suggest Altus Metrum which is complete, much more advanced, and actually being developed/maintained.