First Things First - Components

A project log for Portable Altimeter Logger with Display

A portable altimeter that logs the relative height with a simple display to show max and current altitude.

SergSerg 12/30/2014 at 01:210 Comments

The first thing I needed to do was to choose the components. We will need a microcontroller, a pressure sensor and a display. For the microcontroller, I had always wanted to try the Pro Trinket and I had one laying around so I thought this would be a great time to try it out. When it came time to choose the pressure sensor I had debated between the BMP 180 and the MS5611. MS5611 is much much more precise than the BMP 180 but the ladder is cheaper and I had already worked with it before. Plus the difference in precision (10 cm vs 250 cm) was not really that important to me. So I went with the BMP 180. At this point, I'm not sure which display to use. I was originally thinking of using a seven segment single digit display but while I was digging through my components I found a HP QDSP-6064 bubble display. Its a cute little DIP sized 4 digit seven segment display. Ive never worked with it before and It looks kinda cool. Hopefully it'll be visible in the daylight.

Enough talking, now I'm off to get the microcontroller and the pressure sensor to work with eachother....