Superpositioned

A recent post regarding high altitude balloons in the DIY Live Electronics Forums reminded me of an older altimeter project I wanted to copy for my model rockets. His original design uses a Basic Stamp to record pressure data from a sensor. Due to price constraints and chip loss, he changed to the cheaper PIC microcontroller. Later designs implemented a accelerometer and temperature recording as well.

The site contains schematics and source code, making it an excellent starting point. There is also an Excel spreadsheet to linearize the pressure output and converting it to altitude.

Too bad I lost my interest in model rocketry when I moved into ‘the city.’ Small rockets in the park are not as fun as all the space we had on Daddy’s farm.