Switching between Red, Green and Blue (or Blue1 or/and Blue2 for an RGBB type): An RGB LED is a LED which has three (or four for an RGBB type) semi-conductor LED’s in one normal housing i.e. standard 5 mm. The Red LED is made of Gallium Arsenide Phosphide on Gallium Phosphide, the Green LED is […]
Renewable energy solutions are becoming increasingly popular. Photovoltaic (solar) systems are but one example. Maximizing power output from a solar system is desirable to increase efficiency. In order to maximize power output from the solar panels, one needs to keep the panels aligned with the sun. As such, a means of tracking the sun is
Helianthus: The Solar Tracking System using ATmega16 microcontroller Read More »
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 LED 2x 330 ohm 1x ATtiny22* 2x 1N4007 1x 100n 1x 47uF/16V 1x 78L05 * The ATtiny22 is obsolete, replace with one of the folowing AVRs: AT90S2343 / ATtiny13 / ATtiny45.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 »
Katja & Guido at Tuxgraphics sell a very affordable little AVR controlled power supply. That power supply can be controlled by sending it commands by I2C. Because I already have a pretty universal network connected to my PC it seems very logical to me to modify the software for that power supply to accept commands
Power Supply 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 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 »
There have been several Instructables dealing with outputs from the ATtiny2313 and similar AVR devices. For example, http://www.instructables.com/id/Ghetto-Programming%3a-Getting-started-with-AVR-micro/, http://www.instructables.com/id/Drive-a-Stepper-Motor-with-an-AVR-Microprocessor/. Working on the latest one from The Real Elliot, which showed how to control stepper motors, I found that it would be really helpful to be able to run alternate sections of code in the same
Reading Switches with using Attiny microcontrollers Read More »
Have you played with Arduino’s and now have a taste for microcontrollers? Have you tried to go beyond Arduino but got stopped by the dense datasheets? This is the instructable for you! I was working on an instructable for the epilog contest which would wirelessly link two smoke alarms. I wrote all the code and
A complete starter guide to AVRs using attiny2313 microcontroller Read More »
