Hi… Is there any antenna attachment or ability to extend the range of the wifly module?
Yes there is. I have used [2.4GHz Duck Antenna RP-SMA - Large with [Interface Cable RP-SMA to U.FL. I have not tested how much difference the added antenna makes tho.](Interface Cable RP-SMA to U.FL - 100mm - WRL-00662 - SparkFun Electronics)](2.4GHz Duck Antenna RP-SMA - Large - WRL-00558 - SparkFun Electronics)