BlackWidow 1.0

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The BlackWidow is an Arduino Duemilanove compatible clone that has WiFi connectivity baked directly onto the board. It is best suited for low data rate applications, such as simple control and sensor applications like temperature readings.


Contents

BlackWidow Features

  • Size compatible with existing Arduino Duemilanove and Diecimila boards
  • Up to 14 digital I/O pins [1]
  • 6 analog input pins
  • Atmel ATmega328P MCU
    • 32KB flash RAM (2KB used for bootloader)
    • 2KB SRAM
    • 1KB EEPROM
  • Lower profile USB 5-pin mini-B connector
  • Auto-switchable power between USB and external DC power
  • 2-pin JST connector allows for more varied external power options (JST to DC barrel jack, Lithium-ion battery pack, etc.)
  • 802.11b 1 and 2 Mbps WiFi connectivity
  • On-board PCB antenna
  • Switchable interrupt between INT0 and digital pin 8
  • Supports infrastructure mode (BSS) and adhoc (IBSS) network modes
  • Ability to connect to secured WiFi networks
    • WEP (64-bit and 128-bit)
    • WPA/WPA2 (TKIP and AES) PSK
  • LED attached to digital pin 9 used to indicate a successful wireless connection


[1]: For WiFi usage, a minimum of 5 digital pins are required: 4 for SPI and 1 for interrupt. The interrupt is switchable between digital pin 8 and digital pin 2. The SPI bus can be shared with other SPI devices, but the CS pin cannot be modified from pin 10. Your other SPI device must have a switchable SPI CS pin, or a hardware modification needs to be performed.


Pin Usage

File:BlackWidow.JPG

Schematic

The schematic can be found here.

If you need software to view the schematic, you can download the Eagle software for free from CadSoft.

Gerber File

The board gerber file can be found here.

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