I appreciate that there hasn't been much activity on this thread recently but I wanted to share my connectivity issues here in case it helps anyone. My iSpindel is located in the fermenter in my garage with brick/stone wall between it and my router. In spite of this, I managed to get the iSpindel to connect and transmit on WiFi. Unfortunately, it has lost its connection about 2 days into the brew on x2 occasions. I installed a powerline extender with WiFi AP and changed the SSID on my router so that I could re-use it with the extender instead. To my surprise, this actually worked and my iSpindel has reappeared in Ubidots and is transmitting normally. The WiFi AP is less than a metre from the fermenter so no signal strength issues now. I'm guessing that after a certain number of failed attempts to connect to an AP, the device gives up, although on my first brew, it did actually reconnect with a gap of about 5 days!