Introduction: Temp Sensor DS18B20 (Raspberry Pi)

About: the Raspberry Pi is Awesome!

Basic tutorial of how to setup a DS18b20 temp sensor with the raspberry pi.

Step 1: Parts

Required Parts:

RPI 3 -

4 Amp Power Adapter -

16GB micro SD -

120 pcs jumper cable:

ds18b20 sensor -

Step 2: Setup

1. Edit config.txt

sudo nano /boot/config.txt

add "dtoverlay=w1-gpio" to the bottom of the file

sudo reboot

2. Type the following commands

sudo modprobe w1-gpio
sudo modprobe w1-therm

cd /sys/bus/w1/devices/


3. change directory to sensor instance

cd 28-00000xxxxxxx *serial number is unique

4. check to see if sensor is functional

cat w1_slave

you should see output similar to this

root@raspberrypi:/sys/bus/w1_slave/28-00000495db35# cat w1_slave
a3 01 4b 46 7f ff 0d 10 ce : crc=ce YES

a3 01 4b 46 7f ff 0d 10 ce t=26187

Step 3: Code

Download and run python script:

Step 4: Additional Info