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 Arduino code ...

[Thor_x86], aka [Eric], built an Arduino sketch that does just that — and he threw in the ability to send (or receive) serial messages, too. This is a neat idea — kind of a simplified Bus Pirate.

El Arduino UNO R4 SPE Shield añade conectividad Single Pair Ethernet (SPE) y RS485 a las placas Arduino, acercando el mundo ...

The release of the 1.0 Arduino platform in 2011 represented a ... Total DC Output Current on all I/O lines 130 mA DC Current for 3.3V Pin 800 mA DC Current for 5V Pin theoretical 1A, recommended ...

Step 1: Plug your 8-ohm speaker into Arduino as follows: the red lead into digital pin 8 and the black lead into the digital GND pin, along on the same line of pins on Arduino. • Step 2 ...