Circuit Splash

We are building here a RGB bulb using Red, Green and Blue LEDs, we just need to add a mechanism to control the brightness or intensity of these light individually. To control the brightness, we are using PWM (Pulse width Modulation) method with 555 time IC

Learn how to use Python for Arduino to send serial data, control LEDs, and more. This beginner project shows step-by-step how to link Python with Arduino for interactive electronics.

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.

It's a known trick that we can use LEDs in reverse. We'll explore how to use them as photodetectors with Arduino and create a simple demo that responds to hand swipes.

An Arduino Uno is used in this do-it-yourself RFID attendance system to track students and employees automatically. comprehensive project tutorial that includes LCD interface, circuit connections, programming code, and helpful implementation advice for beginners.

The 8255 is a programmable, parallel I/O device simply called PPI.
It can be programmed to transfer data in various modes of I/O.
It provides 24 I/O pins that can be grouped into three 8 bit parallel ports: PORT A, PORT B and PORT C.

NeoPixel LED Strip requires only three pins to drive several RGB NeoPixel LEDs. Two pins are for power and ground and one Pin is for Data In (DI). Data IN pin is used to address and control the different LEDs in the strip with their color, brightness etc.

In this project we are going to interface a ROTARY ENCODER with ARDUINO. ARDUINO UNO is an ATMEGA controller based development board designed for electronic engineers and hobbyists. In ARDUINO we have 20 I/O pins, so we can program 20 pins of UNO to be used as either input or output.

Getting stuck out in the rain without keys was the motivation for this project. It lets you trigger a garage door opener through a website hosted by an Arduino. With the Arduino connected to a wireless network, you can use your smart phone to connect to the webserver, enter a password, activate the garage door and get inside before getting drenched in the downpour.