Mini AVR USB Revision as of 16:03, 3 July 2014 by Sandeep (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Mini_AVR with USB is a small rapid prototyping board based on atmega 8 controller from AVR. Comes with inbuilt bootloader and hence eliminates use of external programmer. It can also be used with Arduino software. The board has additional pads for male connectors, with which the board can be fixed on a bread board!

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Features

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• USB Interface CP2102: for communicating with the host computer.
  
• LCD Interface:16 characters,2 lines.
  
• Test Leds(2) and Switches(2).
  
• Breakout for all Ports.
  
• POT to test ADC.
  
• Breakout to fix directly on breadboard.
  
• Breakout +5v,Gnd and Vin.
  
• Power Supply compatible with DC adapters.
  

Physical Features

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• Dimensions:65mm X 90mm.
• 1.6mm Glass Epoxy, FR4 PCB.
• Wave Soldered

Downloads

-> Schematic
Arduino Sample Code

Programming and Usage

Using the Board with AVR Studio and Flashing with XploreFlash

Step 1: Xplore flash is based on various opensource software, it requires avrdude. Avrdude is part of WinAVR GCC complier. Download and install it.

Step 2:To connect Development board with computer USB driver is required. Windows USB to UART Drivers for CP2102

• For Other Operating system please download from Silicon Labs website.

Step 3: Download and install XploreFlash GUI. (XploreFlash GUI is based on AVRDUDESS)

Step 4: Follow the steps on images below to flash the board.

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Note: The GUI software will require .NET framework 2.0 or later please download and install it.

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Using the Board with Arduino Software

For the board to appear in the arduino software add the following lines in the boards.txt file.
File location:e.g: C:\Program Files\Arduino\hardware\arduino

#################################################
atmega8.name=Explore AVR Mini USB w/ ATmega8
atmega8.upload.protocol=arduino
atmega8.upload.maximum_size=7168
atmega8.upload.speed=19200
atmega8.bootloader.low_fuses=0xdf
atmega8.bootloader.high_fuses=0xca
atmega8.bootloader.path=atmega8
atmega8.bootloader.file=ATmegaBOOT-prod-firmware-2009-11-07.hex
atmega8.bootloader.unlock_bits=0x3F

atmega8.bootloader.lock_bits=0x0F
atmega8.build.mcu=atmega8
atmega8.build.f_cpu=16000000L
atmega8.build.core=arduino
atmega8.build.variant=standard

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  1.The board shows up in arduino software

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  2.Check exact COM port

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  3.Select the COM port.

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