Adafruit BooSTick - AA Voltage Booster
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Are you tired of having to accommodate inconvenient power supplies and compromise the mobility and customization of your project? The BooSTick from Rover Development might be just the thing you need! This tiny board allows you to bring the power to your project, and not the other way around. Bring your micro to the sensor without running wires! A single AA battery is used to provide breadboard power of 5V or 3.3V (or other voltages by tuning the feedback resistors), and a boost regulator provides the voltage.
BooSTick provides extremely small and convenient portable regulated power to Arduino, wearables, DIY, and other projects. The entire package is about the size of a single AA and can drive Arduino projects for many hours at a time. When the battery is used up, pop another in for continued use -- or better yet, use NiMH rechargeable batteries to reduce your carbon footprint!
Since it plugs right into your breadboard, it's great for prototype power and testing. BooSTick also plugs right into some Arduino boards and provides power in a footprint smaller than a standard shield. At 200 mA output, it can handle many microcontroller or analog projects!
Comes fully assembled, AA battery is not included