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Compatible Arduino Shields for the WiFly RN-XV

• SeeedStudio XBee Shield low cost shield, switchable between hardware serial and digital pins 11 and 12, or directly to USB uart.
• DFRobot Xbee Shield low cost shield. Reboots Arduino when WiFly reboots. Jumpers to switch between hardware serial and direct USB uart connection.
• The Official Arduino Wireless Shield Switch to connect hardware serial or direct USB uart to the WiFly module.

Shields that don't work

• SparkFun XBee Shield. 5V to 3.3V level shifting solution does not work with RN-XV. Symptom: unable to send serial data to the WiFly module.
• IteadStudio XBee shield v1.1. Does not have any level shifting on the DIN pin, may damage the WiFly module.