Low-Cost LED Dimmer using LM3578

Low-Cost LED Dimmer using LM3578

This Low-cost LED dimer project includes two main parts, an LM3578 chip, and a MOSFET. The LM3578 generates a PWM signal, and Q1 MOSFET helps to drive a high current LED. The project also includes current limit feature. Over current trigger point is set to 1.1A. LED intensity can be...

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3 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

3 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

This is a 3 Digit 7-segment display project that contains 3 x Common Cathode displays, current limiting resistors or each LED segment, 3 x PNP Transistor on each common cathode for multiplexing etc. The project works with 5V TTL signals but can be optimized for 3.3V operations by...

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Arduino 4-Digit 0.5″ Common Cathode 7 Segment Display Module

Arduino 4-Digit 0.5″ Common Cathode 7 Segment Display Module

This project will help you to easily develop an Arduino compatible project that requires 4 x -7Segment 0.5" displays. The project consists of an Atmega328 microcontroller, 4 x BC847 NPN transistors to drive the common cathode displays. All displays are used in multiplexing...

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Arduino 3-Digit 0.5″ Common Cathode 7 Segment Display Module

Arduino 3-Digit 0.5″ Common Cathode 7 Segment Display Module

This project will help you to easily develop an Arduino compatible project that requires 3 x 7-Segment 0.5" displays. These are common cathode displays that use multiplexed configuration, BC847 transistor drives 3 x common cathodes, all display segments are connected to the...

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Arduino 2-Digit 0.5″ Common Cathode 7 Segment Display Module

Arduino 2-Digit 0.5″ Common Cathode 7 Segment Display Module

This is an Arduino compatible board for creating 2 Digit Display projects. The circuit operates with 5V DC, Connector CN1 is provided for bootloader programming and Arduino firmware upload. A new Atmega328 chip requires a bootloader and Arduino firmware programming, Connector CN1...

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4 Digit Common Cathode 0.5″  – 7 Segment Display Module (Multiplexed)

4 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

This 4 Digit 7 segment display project contains 4 x Common Cathode displays, current limiting resistors or each LED segment, 4 x PNP transistors on each common cathode for multiplexing, etc. This is a very compact project that works with 5V TTL signals but can be optimized for 3.3V...

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2 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

2 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

This 2 Digit 7 segment display project contains 2 x Common Cathode displays, current limiting resistors or each LED segment, 2 x PNP Transistor on each common cathode for multiplexing, etc. This is a very compact project that works with 5V TTL signals but can be optimized for 3.3V...

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POV (Persistence of Vision) – Open-Source Arduino Nano Hardware

POV (Persistence of Vision) – Open-Source Arduino Nano Hardware

This is an easy and simple hardware to create a POV display. The hardware consists of a Hall sensor, Arduino Nano, 17 x 5mm LEDS of various colors, etc. The Hall Sensor is connected to analog pin A5 with a pull-up resistor. The circuit works with 3.7V to 5V DC and a 3.7V battery is...

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