The APC220 header feeds power to the module on pins 1 and 2 (GND and 5 V) and connects pins 4 and 5 (UART) to Arduino pins 0 and 1. The APC220 module (see next image) has a total of nine pins (only ...

Here we need to use only the shift-out registers, so the download version of the library is 1.0 but there is also a version 1.1 of the same library supporting also special pins i.e. PWM and SPI. More ...

You cannot use the Pxn notation (ie, PB2, PA1, etc) to refer to pins - these are defined by the commpiler-supplied headers, and not to what an arduino user would expect. To refer to pins by port and ...

The backlight is automatically lit and is connected to pins 1 and 2 in common with the LCD. I ended up scraping the J3 connection gently with a stanley knife and managed to cut the common connection.

16×2 character LCD. Since our Arduino program (capacitance.ino) uses the LCD in 4-bit mode, only LCD data lines D3-D7 are configured for reading data from Arduino. Pins 1 and 2 of the LCD are ...

Enter the ExtraCore library for Arduino, a software library that turns two or more Arduinos into a multi-core microcontroller with more pins than you’ll ever need.

We previously used multiplexing technique in Arduino to interface 4-digit 7-segment display and driving 8x8 LED matrix. Charlieplexing allows you to control N * (N – 1) LEDs, where N is the no of pins ...

The Casio SK-1 keyboard is fairly well-known in the “circuit bending” scene, where its simple internals lend themselves to modifications and tweaks to adjust the device’s output i… ...

PWM pins work the same way across all Arduino boards, so you don't need to go out of your way to buy a Mega if you already have a board supporting PWM. On the Uno, Nano, and Mini, the PWM pins are ...