Connect external 5VDC supply’s GND, to the GND of 8×8 LED Matrix Module Note that the 8x8LED Matrix Module should be common-grounded with Arduino, ie, always remember to interconnect the Arduino GND ...

Here is a simple, yet useful circuit of an Arduino 4-digit 7-segment LED display unit. The module used here is a self-contained, compact common-cathode module containing four 7-segment LED numeric ...

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...

Earlier this year we showed you a slick MIDI sequencer project that was constructed using an Arduino Mega, which also happened to drive an incredibly detailed touch screen display.

The LED will blink with absolutely no intervention from the Arduino. You could put the Arduino in deep sleep, if you wanted to and that LED will still blink.

Raspberry Pi enthusiasts wanting to connect their projects to the Arduino Cloud using Python might be interested in a guide specifically created by the official Arduino team.