A portable logger and graph viewer for altitude, temperature, and pressure data.
Hooray, the v1 Backcountry Logger boards have arrived from the PCB manufacturer! This time I used Dorkbot PDX, and the elapsed time from the ordering cutoff date to board delivery was only 12 calendar days. For $5 per square inch, with…
Shrinking a design as far as possible can be an addictive hobby. Even though PCBs for the first backcountry logger design aren’t yet back from the board house, I’ve been busy working on a revised version that’s just 1.9 x 1.1…
Sometimes it seems like there are a million different LCDs you might use with your microcontroller project, and deciding on one can be hard. Once you’re ready to move beyond a basic text display, you’ll find graphic displays have a…
Hallelujah! After substituting an external 32768 Hz crystal as the timer clock source for my hiking data logger, I’ve reduced the sleep mode (LCD off) supply current to less than 0.01 mA! It’s actually below the resolution of my multimeter– the meter…
In my last post, I described an idea for a hiking data analyzer based around an old cell phone LCD, a pressure/temperature chip, and an ATmega microcontroller. Since then, I’ve received the parts and built a simple demo that exercises…
It’s new project time, and I’ve decided to try my hand at building a data logger/grapher/analyzer for long-distance hikers. In August I’ll be hiking the John Muir Trail, a 211 mile wilderness trail through remote parts of California’s Sierra Nevada mountains. My…
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