A new guide in the Adafruit Learning System: Energy Budgets. When you’re thinking about a project that will be battery powered, one of your first questions will be “how big a battery do I need?” or maybe, “I have a battery, how long will it last?”
This guide is an intermediate introduction to calculating the energy budget for battery-powered projects. There’s math, but nothing hard: mostly multiplication and addition, with a little division here and there.
The bigger challenge is remembering what the numbers mean. That involves learning some vocabulary, and working with the ideas until they stop feeling new and strange.
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