Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...

Reference circuit diagram of an Arduino-compatible LCD backpack is shown below. What follows next is information on how to use one of these inexpensive backpacks to interface with a microcontroller in ...

Grove LCD RGB Backlight V4.0 running from an Arduino Nano ESP32 via a Level Shifter. Video here. NOTE: Arduino Nano ESP32 (based on the Espressif microcontroller) is a 3.3V device, whereas V4 of the ...