testing

Automatic Irrigation System using an Arduino Uno Automatic Irrigation System using an Arduino Uno

Every one of us likes a little greenery in our houses, don’t we? Plants require really low maintenance and can be left for days…

ESP32 Audio Player using LM386 IC DIY ESP32 Based Audio Player

DIY Music players are fun to build, and we previously built a few music players using Arduino and a dedicated MP3…

ESP32-CAM Face Recognition Door Lock System ESP32-CAM Face Recognition Door Lock System

Security is of utmost concern for everyone these days, whether it's data security or security of their own home. With the…

pH Meter using Arduino Uno pH Meter using Arduino Uno and LCD Display

The pH scale is used to measure the acidity and basicity of a liquid. It can have readings ranging from 0-14, where 0 shows the…

QR Code Scanner using Raspberry Pi and OpenCV QR Code Scanner using Raspberry Pi and OpenCV

QR code (Quick Response code) is a type of matrix barcode that contains information about the item to which it is attached,…

Interfacing ADXL345 Accelerometer with Arduino UNO Interfacing ADXL345 Accelerometer with Arduino UNO

We all know about accelerometers and gyroscopes; they are primarily used to detect acceleration. While an Accelerometer can…

Simple H-Bridge Motor Driver Circuit using MOSFET Simple H-Bridge Motor Driver Circuit using MOSFET

At the outset, driving a motor might seem like an easy task – just hook the motor up to the appropriate voltage rail and it…

Getting Started with ESP32 using Arduino IDE Getting Started with ESP32 using Arduino IDE - Blink LED

The internet has reached almost every pocket through smartphones. It is estimated that approximately 3.2 billion people use the…

555 Timer PWM Generator Circuit Generate Pulse Width Modulation (PWM) Signal using 555 Timer IC

Pulse Width Modulation using 555 timer is an important feature of today’s microcontroller due to its requirement for…

Op-amp IC LM741 Tester Circuit Op-amp IC Tester Circuit

Op-amp (Operational Amplifier) is very important component in Electronics, and used in many Electronics circuits to serve…