I'm hugely new to electronics. I'm about to place some outdoor sensors around the house and those should be accessed by a Raspberry-Pi which is in middle of the house. I'm aware about setting those analog sensors with RPI with ADC modules.
However, my concern is that all of the sensors are around 30m radius from the RPI. What are some good methods of connecting those sensors to RPI?
WIFI/Bluetooth: I would need to place a wifi/bluetooth capable module with every sensor.
Radio: This sounds complicated.
Cables: 30m cable could generate lot of noise level. But I'm open to use this method with proper knowledge, if someone like to offer.