🔒 A Smartphone Controlled Password based Bluetooth Door Lock using the 8051 Microcontroller

🔊 Spectrum analyzer for Arduino and 16x2 i²c display

It shows a message that Hello Alexa Welcome... It can be shown anything to using this system. I used a serial monitor 16x2 LCD Display. I have completed Arduino programming.

A Marble Launcher using an Arduino Uno and other electronic components.

Functional way to connect ESP32 to 16x2 LCD without I2C module, using 4-bit communication

Seeedstudio, Grove - LCD RGB Backlight