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WiFly Shield - SparkFunâs WiFi Shield mainstay, this shield equips your Arduino with the ability to connect to 802.11b/g wireless networks. Then it can act as either a web server, client, or both. Arduino Wi-Fi Shield - This is the Arduino Ethernet Shield sans wires.
Is the motor shield compatible with the UNO R3 or Mega R3? What about the extra pins? The motor shield is compatible with the R3 UNO and MEGA. The R3s have 2 extra pins on each header. These are duplicates of other pins on the header and are not needed by the shield. I'm using a 4WD robot platform and I can't get anything to work. The motors used in the 4WD robot platforms from Maker Shed, DF Robotics, Jameco and others. have a lot of brush noise.