Choosing an outdoor commercial LED display means that your IP rating, brightness, pixel pitch, and structural design of the screen will be tailored to your specific environment. The appropriate display can endure rain, direct sunlight, coastal … Read more
Keshav Ashok
Introduction The Toy Organ Circuit is a classic and entertaining electronics project that turns the popular NE555 Timer IC into a simple monophonic musical instrument. By pressing different push buttons, you can generate various musical … Read more
Toy Organ Circuit using 555 Timer IC
Touch switch circuits are widely used in modern electronics because they provide a simple and reliable way to control devices without mechanical switches. With just a finger touch, these circuits can activate or deactivate loads, … Read more
3 Touch Switch Circuits using 555 Timer IC
Overview In the realm of robotics, automation, and electronic projects, controlling DC motors efficiently and effectively is a fundamental requirement. The combination of an L298N motor driver and an ESP32 microcontroller presents a powerful solution … Read more
DC Motor Control using L298N Motor Driver & ESP32
Introduction The HC-SR04 Ultrasonic sensor is a user-friendly, cost-effective sensor ideal for hobby electronics projects and can also be utilized in home automation applications. This sensor is essentially a sound sensor that uses high-frequency sound … Read more
Working principle of HC-SR04 Ultrasonic sensor
Introduction Unlike a servo motor, which comes with a dedicated control board within its housing, a stepper motor or a simple DC motor does not come with a control board that can control the speed … Read more
Working Principle of the L298 H-Bridge Motor Driver
Introduction To step down an AC voltage, we use a transformer; however, to step down a DC voltage source efficiently, we use a step-down buck converter for the process. The LM2596 is a switching regulator … Read more
Working Principle of the LM2596 Buck Converter
Overview Smoke detectors are crucial devices that play a pivotal role in ensuring the safety of homes and workplaces. They serve as early warning systems, detecting the presence of smoke or potentially harmful gases in … Read more
Smoke Detector using MQ-2 Gas Sensor & XIAO RP2040
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 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
Overview This compact 13V/2A power supply, ideal for ham radio rigs and other VHF/UHF portable PMRs, utilizes the STR2012/13 voltage regulator IC from Sanken Electric Co. Many power supplies for handheld amateur radio rigs often … Read more
13V 2A PSU Circuit for Handheld Rigs
Overview We have previously released designs utilizing a transistor junction in Zener breakdown mode as a noise source. Those familiar with reverse-biased transistors are aware that the noise voltage amplitude produced this way is highly … Read more
Optimised Semiconductor Noise Source Circuit
Overview The Analog Devices ADP3610 is a voltage doubler utilizing a switched-capacitor converter based on the push-pull principle. The output switching frequency is approximately 550 kHz. The push-pull concept involves two charge pumps operating in … Read more
Switching Voltage Regulator using ADP3610
Overview Imagine you’re designing a compact electronic device that needs to convert a higher input voltage to a stable +5V output, but space and efficiency are critical. Traditional linear voltage regulators won’t work due to … Read more
Compact Switching Step-Down Converter using MAX639
Overview In the world of IoT (Internet of Things), the ability to gather data from the environment and display it in a user-friendly manner is paramount. One of the key components in such a setup … Read more
Interfacing BME280 with ESP32 & Display Values on OLED
More than several years have passed since this website first published the 3 – 5W Class-A Audio Amplifier, and its success has only grown over time. Recently, some minor adjustments were made to enhance its … Read more