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Running LED bicolor

This is a good project for beginners. It is easy to build.This running LED light uses seven bicolor led's red and yellow, they light up in a pattern that can be made within the program code.The program code is written in assembler. ATMELs AVR STUDIO is used to write the program. The project uses the AT1200 but the AT2313 can also be used. As a clock source a 4Mhz ceramic resonator is used, this is cheaper t ...

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LED thermometer

his project shows the temperature on a three digit 7-segment display, it measures the temperature from -9.5 to 99 degrees Celcius in 0.5 C steps, or from 0 to 210 degrees Fahrenheit in 1.0 degrees steps. Because of the LED display the temperature is also readable in the dark. This project is available pre-assembled and tested at www.bizztronix.eu The TCN75 from MicroChip is used to measure the temperature. ...

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RGB LED color mixer

Page 1 of 4 An RGB LED is a LED which has three LED's integrated in one packaging. These LED's have the colors Red, Green, and Blue. The RGB LED used here is a hyperflux LED with common cathode, which can draw 20mA current. Such a LED costs about 2€. With these three colours you can mix to any colour. When using 8-bit PWM a number of 256 * 256 * 256 combinations can be made, thus the LED can show 16.777 mil ...

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Stepper motor driver

With this circuit you can drive a unipolar stepper motor. It operates in full step mode. The AVR attiny2313 micro controller controls the pulses for the stepper motor. The pulses are amplified by the ULN2003 driver. The driver accepts 5V inputs, the output for the driver is up to 30V so you can connect an stepper motor of up to 30V if you use an external power supply. With the two push switches you can driv ...

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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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