Tuxgraphics AVR microcontroller electronics

See what others have done with electronics from our shop:
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...it's more than a hobby electronic store. Tuxgraphics has tutorials, source code, examples and the components to build it.

Mini avr projects

NEW: 2009-03: Using the "Mini 3 digit display", (PDF)
Different uses of the three digit display. It is not only a DVM module.
2008-10: An AVR-USB slide show presenter (scroll forward/backward button), (PDF)
A small handheld USB-stick alike device to scroll forward and backward the slides of your presentation.
2007-08: An AVR microcontroller based electronic dice, (PDF)
Simple but really cool: an electronic dice. Works even in outer space ;-)
2007-06: Mini 3 digit display, a small and inexpensive voltmeter module, (PDF)
We build a simple and inexpensive three digit display. It's a voltmeter module but it has also gerneral purpose digital IO pins.
2007-05: A simple digital thermometer, (PDF)
In this article we build not only a thermometer but see also how to interconnect a microcontroller to a linux PC over a physical RS232 interface without the extra MAX232 chip. The I2C protocol is used for the communication.

AVR ethernet / web server

The articles in this section use the same tuxgraphics ethernet board for different applications.

NEW: 2009-06: Temperature measurement and equipment control over the internet, (PDF)
How to switch on/off heating or air conditioning when you are away for longer periods of time. This application shows also how to plot measurement data in real time on a web page produced by the microcontroller.
NEW: 2009-05: Introduction to the tuxgraphics TCP/IP stack, 3rd generation, (PDF)
The tuxgraphics TCP/IP stack is as small and fast as always but has now new functions for web clients, email and twitter.com/identi.ca.
NEW: 2009-04: Using the tuxgraphics embedded web server to control scientific equipment , (PDF)
A more advanced version of the tuxgraphics web-server software controls equipment on the outside of an airplane. You can however also use it if you do not have an airplane ... Very useful of home automation.
2009-04: Using the tuxgraphics embedded web server for Wake on Lan (WOL), (PDF)
How to use the ethernet board to remotely wake up PCs on the LAN.
2009-03: A hobby power over ethernet solution (homebrew PoE), (PDF)
How to use the ethernet cable to supply power to the board.
2009-03: Avr ethernet host watchdog, (PDF)
A small hardware watchdog to watch your network equipment.
2009-01: Fast realtime communication over ethernet, (PDF)
How to control IO-pins or read data remotely with less than a millisecond delay.
2008-08: A web based reset button, (PDF)
A small circuit with some software to remotely reset/reboot other equipment.
2007-09: Temperature and humidity measurements with the AVR web-server, (PDF)
Just add this one SHT11 sensor. No other components are needed to measure temperature + humitidy + dew point.
2007-04: An ethernet weather station, (PDF)
Add a sensor board to the avr-webserver/ethernet board and ready is the web enabled weather station with local LCD display.
2007-02: A LCD display with Ethernet interface, (PDF)
Here is another example on how our general purpose avr Ethernet board can be used. It's also interesting if you don't plan to attach a LCD to you hardware as it shows how to decode http-form data.
2006-12: Using the AVR microcontroller based web server, (PDF)
Examples of what can be done with our avr web server.
The article explains also how to connect it to the public internet.
2006-11: HTTP/TCP with an atmega88 AVR microcontroller (AVR web server), (PDF)
A complete web server in an atmega88!
It's the same hardware as the previous 2006-06 article. Just update the firmware to add a web interface.
2006-06: An AVR microcontroller based Ethernet device, (PDF)
A simple example application to switch on or off a relay via Ethernet from any computer in your network. The hardware is generic and ready for more complicated future applications. Welcome to the fascinating world of small microcontroller Ethernet devices based on the ENC28J60 Ethernet chip. The software described here uses only UDP but click on the article above for a web-interface.

Clocks

2007-10: Tuxgraphics AVR NTP Clock, (PDF)
A nice clock that has always correct time and date thanks to the Network Time Protocol
2007-10: An AVR Oscilloscope Clock, (PDF)
Make your oscilloscope show the current time!

Avr programmer

2007-05: AvrUsb500v2 -- an open source AVR Programmer, stk500 V2 compatible, with USB interface, (PDF)
A modern programmer for Atmel AVR microcontroller with USB interface. This one has no "chicken and egg" problem. That is: You can build it without building first a programmer to program the programmer.
2009-01: The Tuxgraphics ISP header, (PDF)
A bit of background information about the programmer connector we use.

A bench power supply unit for your lab

2007-07: DDCP: digital DC power supply unit, (PDF)
A very small an really good DC bench power supply unit for your hobby lab. It has lots of features which you normally find only in very expensive power supplies. This one is affordable, small and easy to build.

Software development

NEW: 2009-04: Tuxgraphics AVR C-programming tutorial, (PDF)
How to program AVR microcontrollers in C, contains a number of code examples
2009-01: Building your own avr-gcc environment with atmega328p capabilities, (PDF)
How to build a recent version of avr-gcc for Linux (mac, freebsd and windows are also explained).