We’ve seen [Johan]’s AA-battery-sized Arduino/battery crossover before, but soon (we hope!) there will be a new version with more MIPS in the same unique form factor! The original Aardu… ...

This case not only holds an Arduino and breadboard, it has two drawers for your components. If the breadboard and one of the drawers are removed, the closed case will even fit an installed shield.

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 ...

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 ...

The Newdery Battery Case for iPhone 16 differs from the Mophie Juice Pack for iPhone 16 in a number of ways—some good, some more compromised. Unlike the two-part Mophie design, ...

Theoretically, the Smart Battery Case for the iPhone 6s should also work with the iPhone SE, but we haven’t received confirmation of that just yet. There is one likely sacrifice you’ll have to ...

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 ...

It’s become a yearly tradition and, like clockwork, Apple recently released new Smart Battery Cases for the iPhone 11, 11 Pro and 11 Pro Max. They cost $129 and are available now — and they ...

The EnergyShield Arduino rechargeable battery has been created by Nightshade Electronics and has three main internal functions including a circuit to boost the battery’s nominal voltage of 3.7V ...

Unlike battery cases that you can turn on and off, Apple’s model will always charge your iPhone. This way when the case dies, your phone should be at 100%.