Wanted to pursue a 'practical' arduino project and noticed my wife struggling with our thermostat. Long story short, our current one is placed in the coolest room in the house, so it always shuts off when the other rooms are sweltering.
I wanted to connect an arduino based thermostat to a sensor in the living room that would help the Thermostat get a better idea of the real temperatures around the house. The distance is probably around 20-30ft.
I've been reading up on how to set up WiFi, bluetooth and NFC networking, but can't find any advice on which technology to use. I want to serialize sensor data and if possible, keep the thing off my current wireless network.
How often do you need to send data? Can it be pulled, or does it need to be pushed? How much data? Is that 20 to 30 feet line-of-sight or are there obstructions? How critical is it that every packet gets through? How many senders?
Won't be LOS - there's a wall in the way. I'm looking at polling a temperature from the sensor every 5 or so seconds. I need at least one remote sensor - the other would be on-board with the arduino.