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
Keshav Ashok
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
7 Watt Class-A Audio Amplifier Circuit
Overview The remarkable simplicity of the 7W Class-A Audio Amplifier circuit might naturally suggest that it could be easily adapted into a Headphone Amplifier. Consequently, this adaptation was promptly executed, yielding a Headphone Amplifier capable … Read more
Class-A Headphone Amplifier Circuit Using Transistors
The objective of this project was to create a compact, portable mixer powered by a 9V PP3 battery while maintaining high-quality performance. This mixer consists of three primary modules, which can be customized in terms … Read more
Portable Mixer Circuit 9V Battery Powered
Overview By using a common 78L05 along with an integrated audio amplifier like the TDA2030, you can easily create a customizable voltage regulator that performs excellently. This regulator allows you to adjust the output voltage … Read more
Adjustable 3 Ampere Regulator using TDA2030 and 78L05
The input voltage range on the differential inputs IN1 and IN2 extends to the supply rails, and so in the non-symmetrical circuit shown here, the voltage on IN1 can swing between 0 V and the … Read more
RMS to DC Converter Circuit LTC1966
Liquid-crystal displays come in various sizes and configurations, including their pinouts. Often, using these displays effectively requires access to the manufacturers’ documentation, which can be challenging to find when needed. Hence, having a small tester … Read more
Liquid-Crystal Display (LCD) Tester

What is LCD Displays? The technology known as LCD(Liquid Crystal Display) has fully changed how we engage with digital content. LCDs employ liquid crystals to control light, as opposed to conventional cathode ray tube(CRT) displays. … Read more
The Power of LCD Displays – You Know?

The Arduino Leonardo is a sophisticated microcontroller development platform built around the ATmega32u4 microcontroller. It marks a progression from earlier boards like the Arduino Uno, offering built-in USB communication capabilities through the Arduino Leonardo. At … Read more
What is Arduino Leonardo? All You Need to Know

In the present day, an effective design of a Wireless Sensor Network has become a primary focus of research. A Wireless Sensor Network is a technology that reacts to and detects some form of input … Read more