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 ...

Ryobi has since discontinued the 24V products, and the choices for new tools and machines are now between 18V and 40V. If you're looking for a replacement 24V battery, it can get pricy on the used ...

[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Ar… ...

You can also go the 9v battery route plugged into the on-board regulator of the Arduino but the low mAh rating of a 9v won’t allow your project to stay running for very long.

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 ...

Having a 24V 3.5 kWh battery offering supports adoption into industries such as access, cleaning and construction. * Total energy measured using a 0.2C discharge per IEC 61960-3:2017 *Updated on ...

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.

The unit is 127mm x 88.9mm x 25.4mm and needs 12V or 24V power, drawing 300mA (400mA with an XBee) from 24V. Operation is across -20 to 50°C and 0-90% non-condensing humidity. On-board processing is ...