I'm starting work on a fermentation monitor using the Adafruit temperature sensing tutorial, a RPi B+ running Raspbian, a 4.7 kOhm resistor and a DS18B20 to which I've soldered male breadboard pins. After wiring exactly as the tutorial states (on multiple breadboards), I do:
sudo modprobe w1-gpio sudo modprobe w1-therm ls /sys/bus/w1/devices
But I only get a folder named "w1_bus_master1"; no 28-xxx folders. I understand this is a common question, so here is what I have done so far:
This DS18B20 has worked (and still works) when connected to my Arduino, so the sensor is not faulty.
Tried connecting the sensor to the 5V GPIO with no success.
Tried wiring the resistor as it is on my Arduino's breadboard, with the power/data/ground on one column, the power/data resistor on the next column, and the sensor pins on the column after that; no luck.
Tried using the same wiring on multiple breadboards.
Any ideas where I'm going wrong?