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25 Jul 2010

This project is a clock using AVR mcu and 7 segments displays to display hours and minutes. The clock is using a frequency divider as timer source. Schematic and source code is available on the link below.

AVR 7-segment clock – [Link]

2 Jul 2010

This tutorial will teach you how to use the I/O ports on an AVR microcontroller. I will be using an Atmega8 but the general principles apply to any AVR microcontroller.

Introduction to I/O Registers – [Link]

12 Jun 2010

This project shows how to power an AVR microcontroller from a single AA battery using a circuit that is controlled from the same microcontroller.

Powering AVR Microcontroller from AA battery – [Link]

22 May 2010

Have you programmed the wrong fuses and now you can’t access your AVR? No problem there is a solution out there. All you need is a high voltage programmer to reset fuses. This board called “Fuse doctor” can reset your fuses. Programmer supports ATTiny2313, ATmega8, ATmega16/32 and others. One great feature is that it doesn’t need computer to operate. [via]

Wrong AVR fuses? Correct them using fuse doctor – [Link]

15 May 2010

@ www.ullasmann.eu we found some very interesting projects based on Tiny13/2313 and Tiny15/25. The project list is as follows:

Tiny13/2313 Projects

Tiny15/25 Projects

16 Apr 2010

What is FabISP? FabISP is an In-System-Programmer for well known AVR microcontrollers. This programmer is designed to be build at your home lab using common production procedures. After you build this programmer you will be able to programm your AVR without removing it from your board. To programm the chip you can use Avrdude software. Schematic, pcb, firmware and eagle files are available on the link below. It’s a well designed programmer. [via]

FabISP: A simple AVR programmer – [Link]

13 Jan 2010

Back in July 2009, we reviewed Protostack’s ATMEGA8 development kit. The heart of the kit was Protostack’s 28 pin AVR board. This week Protostack released a new version of that board and it includes a whole bunch of improvements. You can read the original review here.

This release is the 3rd one to date and includes the following improvements over the one we previously looked at.

  • Addition of power supply block
  • ISP-6 interface is now 2×3 pin instead of 1×6 pin
  • Addition of a section for double row headers and IDC connectors
  • Clearer labeling of power busses

The board is available on its own or as part of an ATMega8 or ATMega168 development kit from www.protostack.com. Pricing starts at $9.60 for a single board.

30 Nov 2009

Display on QVGA 240×320 pixel using AVR small 8 bit microcontroller

Build photo frame with AVR and BL-TFT240320PLUS – [Link]

10 Nov 2009

Peter, from Rossum’s Posterous writes:

Can you make an iPhone out of an AVR? No. Can you get a surprising amount of functionality out of a humble 8 bit processor and a cheap touch LCD? Yes. The iPhone runs more than 30 times faster (417Mhz ARM vs 12Mhz AVR) and has more than 30,000 times as much ram RAM (128M vs 4k) yet this frumpy little device can ape some of the iPhones neater tricks. [via]

8-bit AVR homebrew touch-sensitive handheld – [Link]

4 Nov 2008

This basic hack shows how to burn the bootloader onto the Atmel chips that the Arduino controller uses without the need for an external AVR Writer. Simple soldering skills required, but if you are using an Arduino, you are probably already a soldering pro. [via]

Burning the Bootloader without external AVR-Writer – [Link]





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