Circuit Splash

We have built a Volume Meter or VU meter, with the help of MIC, OP-AMP and LM3914, which glows the LEDs as per strength of the sound, if sound is low, lesser LEDs will glow, and if sound is High more LEDs will glow, check the Video at the end. VU meter also serves as a volume measurement device.

Build an IoT-based smart energy meter using ESP32 & PZEM-004T. Real-time monitoring via the MQTT dashboard, SMS alerts for abnormal conditions. Complete circuit & code included.

In this project we are going to design a 25V range digital voltmeter by using ATMEGA32A microcontroller. In ATMEGA, we are going to use 10bit ADC (Analog to Digital Converter) to build a digital voltmeter. Now the ADC in ATMEGA can not take a input more than +5V, so for getting a higher range we are going to use a voltage divider circuit.

Build a smart wearable pendant that tracks air quality with STM32 and SGP40 sensors, alerting users through LEDs and buzzer notifications for real-time environmental awareness.

Learn how to connect a micro SD card module to Arduino step by step. This beginner-friendly guide covers wiring, SPI communication, code for reading and writing files, and practical data logging applications.

Learn how to build a clocked SR flip-flop using NAND gates. Understand its working principle, truth table, and circuit diagram for designing stable digital memory and control logic circuits.

Learn how to build an Arduino game controller with our complete DIY guide. Includes circuit diagram, Arduino code, wiring instructions, and USB setup. Free GitHub code download.

Learn to interface the Raspberry Pi Pico RTC DS3231 using Arduino IDE. Build an accurate digital clock with 16x2 I²C LCD. Includes circuit diagram, code & troubleshooting.

ADC is the Analog to Digital converter, which converts analog data into digital format; usually it is used to convert analog voltage into digital format. Analog signal has infinite no of values like a sine wave or our speech, ADC converts them into particular levels or states, which can be measured in numbers as a physical quantity.