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 ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

An interactive scrolling text display sketch for Arduino and MAX7219 8x8 LED display modules. This is the code I use to control the MAX7219 8x8 LED modules from my Chinese "Geekcreit" brand Arduino ...

You can also check out the Raspberry Pi Bluetooth Speaker and Arduino Audio player if you are interested in more similar projects. Components Required to build a DIY Bluetooth Speaker. Two 3”, 4 Ohms ...

Spread the loveArduino is a well-known open-source electronics platform that provides users with the ability to create interactive and easy-to-control systems in a reliable manner. A popular use for ...

Most of us have an 8x8 LED matrix from one of our Arduino kits. What can we do with them? This module investigates how to use these interesting devices. Along the way, we describe a fun electronics ...

Firstly, read from the Bluetooth module and define a case that if Bluetooth Module Receives “B” from Phone then Start Blinking Led connected to D4 of NodeMCU else if it receives “S” then stop blinking ...

This module has four dot-matrix LEDs cascaded to form a single LED display to allot more area to the user on the display. Connecting two such modules is easy; just connect output pins of the previous ...