#6 is a small, easy to build, inexpensive, bare-bones computer. Like the Arduino, it was designed to easily teach art students about microcontrollers, interactivity, and electronics. It’s only $25 (cheaper than the Arduino) is open source, and uses open source software for programming. It uses a very popular chip (AVR) so there’s a good code library available for it. Check out more at the link below. [via]
#6 microcontroller packs a small punch - [Link]
This is the second version of the AVR signal generator. This time it uses a single sided PCB to simplify the project, and has both offset and amplitude controls. All the source code and schematics are available on the website. Signal generators can be very expensive, this version shouldn’t break the bank. [via]
AVR DDS signal generator - [Link]
This is a Data logger to save values from a tipping-bucket rain gauge.It consist of on-board 4mBit (512kB) Dataflash is used to store the values. Readout to the Windows download software developed for this project takes place via serial port (RS232).
AVR Butterfly Logger - [Link]
This is a clock with a big display unit, that has a DCF77 (german timesignal) Receiver and can be connected to an ethernet network, where it can serve as a NTP server. All of this based on an Atmel AVR microcontroller with 8 KB flash.
NTP DCF77 LED Clock - [Link]
As a first foray into the realm of professional PCB fabrication, Flickr member A.Square designed this 6-pin breadboard adapter for programming AVR chips -
I built and have been using an Evil Mad Scientist Labs-style minimalist target board. It works great, but the problem is you more-or-less need a different board for every different type of chip you want to program, plus, you need to shuttle the chip back and forth from the breadboard to the programmer. It would be great to be able to program the chip in-breadboard, by the dual-row header pin won’t allow that. You can run wires directly from your programmer to the breadboard, but that’s a little messy. So, I decided to make a simple breadboard adapter for the ICSP header. [via]
AVR ICSP breadboard adapter - [Link]
That’s an AVR testboard designed by DG7XO. It’s ideal as a board for development purposes and it is based on ATMEGA8. On the board there are a LCD display, RS-232 communication, LEDs, push buttons, relays, switches etc.
AVR test board for Amtel’s ATMega8 uC - [Link]
Getting a computer to “talk” with a CMOS camera can be difficult, if not impossible, at times. The site has links to PDF files that contain the schematics and theory of operation. There is also a link containing all the code. It’s a nice solution to a common problem.
The aim of this project is the development and construction of an interface between a CMOS camera and a computer. This interface allows a user to get images from the camera, to change some of the properties of the camera as brightness, luminance, etc from a computer. Also some image process is implemented allowing the camera to track white objects and follow them with a servomotor. The interface was implemented using the Atmel AVR ATmega16 microcontroller. [via]
Digital Camera Interface - [Link]
Mike writes -
i would like to suggest this site, which presents an advanced infrared hacking tool, using a simple AVR, has a learning function and 2mb of flash for learned tv remote codes. It even has an usb port, all in software on the AVR (no special usb chip required)! [via]
Unzap – USB TV-B-Gone with learning function - [Link]
Donald sent in his guide to programming an AVR microcontroller. It takes you step-by-step from purchasing the right hardware all the way through uploading the programs. He includes all his schematics and lots of photos. It’s a good place to start learning about the AVR microcontroller.
My goal was to lower the barrier of entry for getting started with the AVR by starting at square one (i.e. you don’t even own a programmer) and getting someone familiar with using the tools as quickly as possible. [via]
A beginners guide to the AVR Micro-controllers - [Link]
It is often useful to know the capacitance between conductors such as wires, PCB traces or the legs of a capacitor. Being able to measure such capacitances is a great tool to verify the value of capacitors or other components, to test cables or to analyse circuits.
The Capmeter: measuring capacitances with an AVR - [Link]