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LED VU meter

Schematic and build Below is the schematic of the LED VU meter. The circuit is builds with the ATMega328 board an two LED boards connected to it. You can also build it on a breadboard. For more detail:  LED VU meter ...

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Running LED’s using ATTiny2313

This running LED or LED chaser is a good project for beginners in the microcontroller technology. It is easy to build, and the assembler program code can be easily adapted. This running LED light has 15 red 3mm LED's. The 15 outputs of ports B and D are used to drive the leds. The LED's light up in a pattern that can be made in the program code, the LEDs run back and forth. With a push button you can select ...

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Running LED’s

This small project let you make running leds. For this project you need a attiny2313 microcontroller and 8 leds and 8 resistors. The leds can be programmed so that they show differrent patterns. Hardware The leds are connected to PORTB of the microcontroller via the resistors that limit the current to 20mA. The project can be build an a small breadboard, but the ATTiny2313 and the LED board can be used also ...

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Dot matrix display

This is a Dot Matrix Scrolling Sign. A Dot Matrix Display has an 5x7 led matrix with 5 columns and 7 rows. The display is controlled by the ATMega328 microcontroller board. The rows are controlled by PORTB of the microcontroller, while PORTD puts the data on the columns to make the characters. The Dot matrix display used here is the LTR-747HR and is 0.7 inch (17.8mm) high. Circuit Schematic and PCB Layout T ...

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Controlling RGB LED colour using Atmega16

This tutorial will give you a brief introduction to the concept of colors and how different colors can be produced using RGB LED. The color would be controlled using an ATMega16 microcontroller. RGB LEDs are basically the combination of the 3 LEDs (Red, Green and Blue) fused into a single package. It consists of four pins totally out of which three of them for the three different colors. The 4th pin is comm ...

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LED Light Bulb Controller using AVR Microcontroller

Previously before 10-15 years the majority of electrical lights were either light bulbs (with yellow light) or tube-light sticks (with white light). The major disadvantage of these lighting devices was they consume more electrical energy (in terms of Watt) and gives less luminance (brightness). Light bulb wastes their most of the energy in form of heat. Also the life time of such devices was also short. Nex ...

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Intelligent LED light controller using AVR

Now a days LED light bulbs are becoming more and more popular because they have several advantages. Some of their advantages are listed below ·         Their energy (electrical) consumption is much more less ·         Their luminance is more ·         Their intensity can be varied ·         Their life time is more So if LED lights are used in place of conventional lights we can save much more electrical ene ...

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