The latest addition to my collection is a cheap portable power supply module labeled by its seller as “18650 Battery Shield (V3) for Raspberry Pi & Arduino”. The pictured shield holds a 18650 Li-Ion ...

[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 ...

The original Aarduino adhered to classic Arduino part choices and was ... the user sticks it in a battery holder for power and it uses an RFM69CW for wireless communication. But now the core ...

Arduino developers and hobbyists looking ... the current drawn from the energyShield at 5V. Assuming that the power from the battery is equal to the power used at 5V, the battery current (100% ...

Scott Tattersall has developed a new low-power Arduino board which includes built-in support for Sigfox and the ability for it to be powered by a 3V CR2 battery. Designed to be used for Internet ...

Comparing the Arduino Uno and the Nano ... It's also a great idea to connect a switch for the battery, so you can turn the power on and off as needed without unplugging the wires.

However, this Arduino DVM can also be used as a standalone 5-V DVM by slightly changing the hardware setup and powering the Arduino from an external power source like the common 9-V battery (see ...

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. In other words, he dropped ...

"Combining the flexibility of Arduino with the power of Android or Linux, you can create and update tons of stand-alone solutions without worrying about the linking between the two worlds and ...