Posted on 15 Jun 2008
The AVR-MT is a DEVELOPMENT BOARD FOR 20 PIN AVR MICROCONTROLLER WITH STKxxx COMPATIBLE 10 PIN ICSP.There are some features :FEATURES:
- ICSP 5×2 pin connector for in-circuit programming with AVR-PG1 or AVR-PG2
- DIL20 microcontroller socket
- Dallas touch button port
- Frequency input
- RS232 DB9 female connector
- RS232 interface circuit with Tx, Rx, signals
- RS232 TTL levels output connector
- Voltage regulator +5V, 78L05 and filtering capacitors
- Quartz crystall oscilator circuit 10MHz
- dimensions 120 x 36 mm (4.7 x 1.4″)
[more]
Posted on 19 May 2008
In this article we will see a state of the art USB programmer for the AVR microcontrollers from Atmel. The programmer firmware has no device dependent data. Therefore it works for almost any AVR microcontroller on the market and possible future microcontrollers. [more]
Posted on 02 Apr 2008
Adding a cheap LCD to your PC is a popular diy project for many beginners in electronics. The parallel port however, is dead. It’s obsolete. It’s big…ugly and just awful. The solution? Add a USB interface to your existing LCDs. The circuit interfaces to a standard HD44780 compatible LCD and emulates the CrystalFontz serial protocol over a virtual COM port created by the FTDI chip. This enables you to use already existing software to speak to the LCD, for example the popular program LCD Smartie. The circuit uses an AVR microcontroller, the tiny2313, and a USB chip from FTDI.[more]
Posted on 06 Mar 2008
This is an USB HID gadget, capable of converting CIR signals from a remote control to keystrokes and/or mouse movements. It uses an ATMega8 AVR microcontroller and the Objective Development firmware-only USB driver stack.The device contains a TSOP1738 infrared receiver & demodulator, which picks up the signals from the remote control. The microcontroller implements a combo HID device, simulating both a mouse and a keyboard. This way it can send mouse movements, button clicks and keystrokes (such as PageUp, PageDown, Enter, Escape, etc.) to the PC. [more]
Posted on 04 Feb 2008
Gary Dion’s AVR based video overlay titler, source and schematics included.The WhereAVR is a small, lightweight, low-power, and low-cost APRS tracker with a full compliment of analog and digital I/O, as well as the ability to decode ax.25 packets. This allows for the reception of remote commands without the need for a “real” TNC. It is designed to hook directly to the speaker and microphone jacks of a handheld radio. One caveat, however, is that it currently doesn’t have a spiffy configuration utility.[more]
