Overview In today’s digitally connected world, the Internet of Things (IoT) has transformed the way we interact with our surroundings. From smart homes to industrial automation, IoT devices have become an integral part of our … Read more
Overview Measuring light intensity is a crucial aspect of various applications, from photography to environmental monitoring. A light meter provides an easy and accurate way to quantify light levels, helping photographers capture perfect shots and … Read more
Light Meter using XIAO RP2040 & OLED SSD1306
Overview In today’s era of technology, the Internet of Things (IoT) has opened the doors to innovative solutions in various fields. One such application is an object counter that utilizes Infrared (IR) sensors in conjunction … Read more
Object Counter using IR Sensor & XIAO RP2040
Overview Earthquakes are scary natural disasters that can cause a lot of damage and danger. Imagine if there was a way to know when an earthquake might happen a little bit before it does. That … Read more
Earthquake Detector & Alarm using XIAO RP2040
Introduction The need for a security system has arisen as a result of rising crime rates. So, Having a security system gives you the safety and security you need to lead a peaceful life, whether it be … Read more
Laser Tripwire Home Alarm System
Overview Voice recording technology has come a long way, and it has become an integral part of various applications, from voice assistants to security systems. If you’re interested in building your own voice recording system, … Read more
Voice Recording with ISD1820 Module and ESP01
The Arduino uses the ATMega328p chip. We can get that in an SMD format (ATMega328p-AU) or the DIP format for trough hole soldering (ATMega328p-PU). But, the chip by itself can’t work. It needs a few … Read more
How to make your own Arduino UNO PCB – ATMega328p
Overview In today’s digital age, the integration of various technologies has led to innovative applications across different domains. One such integration is the combination of YouTube’s vast data resources with the capabilities of microcontrollers like … Read more
YouTube Realtime Data Display on OLED & ESP32
In this tutorial, I will tell you the best way to build a basic Lead Acid Battery Charger Circuit. This circuit utilizes to charge Rechargeable 12V Lead Acid Batteries with a rating in the scope … Read more
How to make a 12 Volt Lead Acid Battery Charger Circuit
Overview In the world of electronics and IoT (Internet of Things), measuring distance is a fundamental task for various applications. Whether you’re building a smart robot, a parking sensor, or monitoring the level of liquid … Read more
Distance Meter using HCSR04 Ultrasonic Sensor & ESP32
Introduction Pulse sensors are used in several projects for athletes, gaming, home appliances, and mobile phone developers where there is a need for reading heart rate data. In this tutorial, I’ll focus on one of … Read more
Heart Rate Pulse Sensor – BPM Meter using OLED & ESP32

Understanding Power Supply Basics 1. Types of Power Supplies – Linear Power Supply: This supply is thus an analog where transformers reduce voltage and how diodes rectify; easy and stable across outputs but relatively inefficient … Read more
How to Fix the Power Supply?

The world of electronics is rapidly evolving. Every year, devices become smaller, faster, and more powerful. This presents unique design and manufacturing challenges that standard printed circuit boards (PCBs) cannot meet. Rigid-flex PCBs, came into … Read more
The Ultimate Guide to Rigid Flex PCB: Everything You Need to Know

The continuous growth in demand for faster and high-power electronic devices has driven the need for new packaging techniques with higher pin counts and improved thermal dissipation. Ball Grid Array or BGA packaging rose to … Read more
BGA Assembly Challenges and Solutions: Ensuring Quality in Electronics

What are Metal Film Resistors? MFRs (metal film resistors) are made by vacuum evaporation or infiltrating metal films onto ceramic pipe frames. Cut the film to obtain a more precise resistance. The film is attached … Read more
Comparing Metal Film and Carbon Film Resistors

What is an Amplifier? An amplifier is an electronic device used to increase the amplitude (or strength) of signals, typically by taking weak electrical input signals and amplifying them into stronger output signals. Amplifiers can … Read more