Having done half a dozen V-USB tutorials I decided it’s time to whip up something cool. As USB keyboards were an area untouched. I decided to make a small USB HID keyboard device that types a password stored in EEPROM every time it’s attached. A new password can be generated just by tabbing CAPS LOCK […]
DIY USB password generator using ATtiny Microcontroller Read More »
Around time when I was beginning to learn about microcontrollers. I had exchanged my laptop with a senior at college for his desktop – that’s because the only way I knew how to program an ATMEGA chip was through either a serial port or a parallel port. USB programmers were not available widely and were
Making a USB based AVR Programmer using ATMEGA8 Microcontroller Read More »
Part 1: Introduction For some people, interrupts are a mystical thing that they think they will never understand. To that I say non-sense! And to that effect and to help us also better understand VGA, let’s see if we can’t output some basic VGA signals like we’ve done before, but this time using some interrupts!
Arduino VGA via Interrupts using AVR Microcontroller Read More »
The classic pong game. Two players. Press the buttons to move paddles up/down. Ball bounces back and forth. If you fail to catch it, your opponent gets one point. Score difference is showed with blue LEDs. Blue LED = lead by one point. If you then win another point, you win the game, and your
LED DOT Matrix Pong using ATMega16 Microcontroller Read More »
Last week on hack-a-day I saw their post on an LED Menorah that was powered by a 9v battery with the lights controlled by dip switches. I thought to myself, “gee, that’s not a very creative design”. There was redemption in the minimalist designs linked too showing a menorah soldered to a tiny2313 and one
LED Menorah using ATtiny13 microcontroller Read More »
History I decided to do this project for several reasons: Frst I like music, second I have a huge collection of MP3, and third I wanted to be able to play them anytime in my living room. I began the project with one major restriction. The printed circuit board of MP3 player MUST be single
MP3 Player using ATMega128 microcontroller Read More »
Driving a shift register using an AVR chip’s built-in hardware is really quite easy. Most of their offerings have an SPI module, or Serial Peripheral Interface. A shift register is exactly that, a peripheral device that communicates via a serial line. All we need to do is hook up our connections and use a few
How to drive 595 shift registers with AVR hardware SPI using ATmega168 microcontroller Read More »
AvrPhone is a simple mobile phone with touchscreen. His brain is AVR ATmega128 microcontroller (128 kB flash, 4 kB SRAM) and user interface, the 2.4 “LCD display with touch foil and ILI9325B controller, equipped with a 16-bit bus. The communication with the old GSM module SIM100Sčísnkého SIMCom manufacturer. The entire system is powered by a
AvrPhone using ATmega128 microcontroller Read More »
This is an evaluation use of a small graphics LCD module. Last summer, SG12232C graphic LCD module has been sold sold for 1500 Yens from Akizuki Denshi and I bought it. However I could not find good application for the LCD module and it was going to go to junk box 🙂 so that I
Audio Spectrum Monitor using S1D15200 microcontroller Read More »
Capturing repetitive waveforms at 1 million samples per second using PWM and a comparator. Download AVR Studio Source wfcao 030326 .asm The impetus for developing this technique came from my own need to capture repetitive waveforms using the least expensive and lowest part-count means possible. I wanted to be able to view the waveforms on
Minimum Mass Waveform Capture using AVR microcontroller Read More »
