Intro: My Nikon DSLR has an infrared remote function (remote sold separately) that is really handy, but fairly limited in range. A while ago, I bought a TV-B-Gone Kit from it’s inventor Mitch Altman, and it can turn TV’s off from a great distance. I thought, “Hey, this thing is open source! I can hack […]
Turn a TV-B-Gone into a super camera remote Read More »
Using the fact that many microcontroller pins have three states (+V, GND, or “high impedence”). You can drive N*(N-1) LEDs from N pins. So the little 8 pin microcontroller like a PIC12Fxxx or an ATtiny11 can drive 20 LEDs on its five available output pins, and still have one pin left for some kind of
How to drive a lot of LEDs from a few microcontroller pins. Read More »
This project gives a speed control of DC motor through PWM method. The Dc motor is derived by the L298 driver IC. You can also control the direction of the motor. There are three buttons to control the motor. Also a bar graph Led display indicate the speed of the motor. An proteus simulation file
DC Motor Speed Control using PWM Read More »
Here’s a traffic light controller using avr microcontroller. It can be adopted for a four way road. The code is written in Codevision C. You can download the C code and the proteus file from the download. For more Detail: Traffic light controller using avr microcontroller
Traffic light controller using avr microcontroller Read More »
This project gives you a real time clock with the RTC chip DS1307. This RTC chip has inbuilt oscillator for clock and it has its own registers for full calender. In this project we dont take care about the days and we just use the time functions. There are 3 push buttons on the circuit
DS1307 based Clock using lcd Read More »
This project gives you a digital voltmeter which can measure voltage from 0v to 25V DC. The values are displayed over the 7segment display. Atmega8 is used and the internal ADC is used to measure the DC voltage. The resistor network is used to reduce the input voltage to the 0-5v. Photo For more Detail:
Digital Voltmeter using Microcontroller Atmega8 Read More »
The 4×4 LED Display was my first project with a two-layer circuitboard layout. The alignment was not 100% optimal, but sufficent. I wanted to make the board as small as possible, so the parts had to be stacked at some places. The square LED’s were painted black on the sides to keep the pixels sharp.
Aim of this project is to present a way to store a large quantity of data into microSD card in files with FAT32 format. Here, ATmega32 is used for data collection and microSD interface. The data is received from in-build 8-channel ADC of ATmega32. One channel is used for reading temperature from LM35 sensor and
microSD ATmega32 Data-Logger Read More »
For a long time I had a layout for this circuit, but could never build it, because the layout was to small to be made by tonertransfer. So it was the first layout I made with my new exposure unit. It’s quite small, so it fits under the LEDMatrix itself. Therefore only SMD parts are
8×8 Bicolor LED Matrix using MAX6964 Read More »
I am presenting one application with the Nokia 3310 LCD: Designing a thermometer using DS1621 temperature sensor IC. DS1621 is 8-pin sensor from Maxim, with temp range of -55 to +125 degree C, which can be interfaced with microcontroller over two-wire serial i2c bus. It has operating voltage range from 2.7 to 5.5v. I’m operating
Thermometer using DS1621 and Nokia 3310 LCD interfaced with ATmega8 Read More »
