The Qduino Mini is the first tiny Arduino compatible board that has a built-in battery charger and fuel gauge, watch the video below to learn more from its creator Quin.

Battery Charging Input: 5V/500mA typical via Micro USB port; Power Supply Output: Switched 5VDC via USB type A port, 3x 5VDC (up to 4A) connectors, and 3x 3VDC (up to 1A) System Status Indicators: ...

What do you do if even the smallest Arduino boards (or their clones) are too big for your homebrew project? If you're Johan Kanflo, you find a way to make them even smaller. His AAduino project ...

Born from Johan Kanflo's mind, the AAduino, so named because of its size, can, almost, conveniently fit inside a 3x AA battery holder for maximum space footprint efficiency. Advertisement ...

Looks like a pretty cool little project, if you don’t want to wait for the Kickstarter then you could breadboard a dev kit from the schematic with a regular Arduino …battery and power circuits ...

Behind the delightfully punny name, you'll find an Arduino-compatible board the size of an AA battery. The hardware tinkerers and prototype mavens out there will invariably have stumbled across ...

I quickly pulled the battery jack from the Arduino and – WOW! – the wires were hot. ... and it was -5.97 V from center connector to the barrel. The other pack read 6.2 V.

This Arduino-compatible board fits neatly into a AA battery slot. Kanflo opted for this form factor to create a self-contained radio node that supplies its own power.

One of the great things about the Arduino is that it’s totally open source so you can make your own variations on it. Case in point, DIYer Johan Kanflo’s AAduino, which comes in at the size of ...

Measuring Battery Capacity With an Arduino Denis Hennessy recently encountered a problem we've all faced: he needed some AAs for a battery-eating gizmo, and he was overwhelmed by the choices ...