Another version: In this version I took PORTB of the AT90S1200 AVR microcontroller as you can see in the diagram, because this makes it simpler to let 8 LEDs flash back and forth. Set the Data Direction Register of port B as an output, the output will source current. What I did is loading an […]
8 LED Knight Rider using AVR microcontroller Read More »
Part list: 6x high eff. LED 2x 330 ohm 1x ATtiny22* 2x 1N4007 1x 100n 1x 47uF/16V 1x 78L05 * The ATtiny22 is obsolete, replace with one of the folowing AVRs: AT90S2343 / ATtiny13 / ATtiny45. History of the back and forth flashers…. In the 80’s the famous TV-series Battlestar Galactica and Knight Rider made
6 LED Knight Rider using ATtiny22 microcontroller Read More »
On this page you will find a scrolling LED sign based on the ATtiny2313 AVR microcontroller, which you can build yourself (when finished) Other names for this device can be: Moving message sign, Message crawler, Scrolling message, message display, etc. The idea is to let a text scroll over the LED dot-matrix displays. A dot-matrix
Dotmatrix using ATtiny2313 microcontroller Read More »
This morning (2009-12-31) I built my 4th AVR programmer. USBasp. I built this one because I wasn’t completely happy with my 3rd programmer and because I want to play with a software USB stack. I do know that it works (I just reprogrammed 2 old projects just to try it out. Programming seems to be
Programmer UsbAsp using AVR microcontroller Read More »
LC Meter: Schematic Source code This is the project I am currently working on (2010-01-23). The LC meter is based on Elmcie or Elsie and other similar LC meters. This project is in a very early prototype stage and is at the moment only capable of measuring inductors. Even though I have build the first
LC Meter using AVR microcontroller Read More »
An Atmega128 microcontroller has got 4K of built in static RAM, which is pretty enough for small and medium range projects that do not involve huge amount of data processing. But if you think you need more than that for your application, you can expand it by adding an external RAM chip. This article shows
Looking for expanding RAM for your Atmega128 Read More »
If you have a blog or website and want to make a physical device to display the number of visitors, this project might be interesting to you. It describes about a similar device that can be directly connected to the internet via router and counts the visitors of your website. The number of visitors is
A physical display device for website visitors based on Atmega168 Read More »
This is a digital clock project based on an ATtiny26 microcontroller, displaying time on four seven segment LEDs. The seven segment LEDs glow bright white and are multiplexed through PORTB pins, whereas the segments are driven by PORTA pins. The time is normally shown in hh.mm format but it can be switched to display mm.ss
AVR digital clock with white seven segment LED display using ATtiny26 microcontroller Read More »
If you are a computer technician and want to avoid the need of a PC on your desk to generate test rasters, this is something you need to build. This is an embedded monitor tester that you can use to test if a VGA monitor is working or not. You don’t need a bulky computer
VGA monitor tester using ATTiny2313 microcontroller Read More »
This project describes an open source color game development platform based on an AVR microcontroller. You can code a color, high resolution, smooth video game, like Super Mario Bros or Commander Keen on this system. All video processing is done by software in background using interrupts, with no external active components. You only need to
Open source color video game development system based on AVR Read More »
