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This project is an AVR spectrum analyzer based on Atmega8 AVR microcontroller an operational amplifier and a few other components. It uses HD44780 compatible LCD or VFD and supports following displays: 16×2, 20×2, 24×2, 20×4.
AVR acoustic spectrum analyzer - [Link]
In this instructible user wkter show us how to drive a Nokia 3310 LCD screen using an ATmega8 microcontroller. The goal is to make LCD communicate with a PC’s USB port. To achieve that LCD is connected to ATmega8 using SPI interface and then connect ATmega to a PC using V-USB.
Connecting a Nokia 3310 LCD using an AVR – [Link]
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]
Stimmopped project will help you tune any string instrument to a given tone. It is build around a ATmega8 microcontroller and uses stroboscopic effect with leds to achieve tuning.
Stimmopped: Optical String Tuner - [Link]
This project uses an ATmega8 microcontroller in order to create a WiFi Internet Radio that can be tuned in online stations.
ATmega8 Based WiFi Radio – [Link]
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]
Miguel build this Handheld 2.4 GHz Spectrum Analyzer insisde an old cell phone case and used the phone’s graphical LCD to display measuring results. This ISM band spectrum analyser is based on CYWM6935 module and ATMega8 mcu. [via]
Handheld 2.4 GHz Spectrum Analyzer - [Link]
Sylvain Bissonnette writes:
This is a simple project. The Frequency is passing through an op-amp to convert it in a square wave. The ouput of the op-amp is feeding the 3*8 bits counter (24 bits) who can accumulate at a maximum of 16777216 count. The maximum frequency you can measure without changing the time base of one second is 16.777216 Mhz. The ATMega8 have 3 functions: enable the counter gate at each second, read his value and display it on the LCD.
ATMega8 Frequency Meter – [Link]
Protostack.com offers an affortable ATMEGA8 Development KIT for anyone looking to start building their own microcontroller projects. This board hosts an ATMEGA8 mcu along with resistors, capacitors and crystal that need to be there to make mcu run. The main advantage of this board is the space available for prototyping your circuit and connectors to directly plug your programmer. On board there are two ISP connectors that will allow a wide range of programmers to be used. A compatible USB AVR programmer is also available for sale on their site. ATMEGA8 port pin connections are available on pcb and pcb tracks for Vcc and GND bring power to your parts on the prototype area. An LC filter on analog Vcc and a reset switch completes this high quality board.
ATMEGA8 Highlights:
- 8-Kbyte Flash Program Memory
- 1-Kbyte SRAM
- 512 Byte EEPROM
- 6 Channel 10-bit A/D-converter
- Up to 16 MIPS throughput at 16 Mhz
- 2.7 – 5.5 Volt operation
youritronics.com writes:
I liked the tvbgone kit from Ladyada the first time i saw it but i never had the time to build it, until a week ago. But than i decided to build a more powerful one that could turn off TV’s from even greater distance. I came up with a design that consists of 48 IR LED’s and a ATmega8 that will send the signals to the LED’s.
Super TV-B-Gone - [Link]
