# DS18B20_raspi

## Read first  
https://pinout.xyz/pinout/1_wire  
https://www.raspberrypi-spy.co.uk/2018/02/enable-1-wire-interface-raspberry-pi/  

For grafana Influx:  
https://pimylifeup.com/raspberry-pi-grafana/  
https://pimylifeup.com/raspberry-pi-influxdb/  


## Hardware

Connect the DS18B20 to the raspberry pi  
Raspi  - DS18B20  
3V3    -> VIN  
GND    -> GND  
GPIO 4 -> DATA  

Rember to add a 4K7ohm pull-up resistor between VIN and DATA on the sensor!

## REQUIRED PACKAGES

python3-influxdb  


## Installation


Enable i2c in raspi-config


Copy the files (as root!) report_temperature.service/report_temperature.timer from ./etc/systemd/system to your system /etc/systemd/system

Now tell systemd that you have added new files:  
'systemctl daemon-reload'

save temperature_reporter.py to /home/pi/tempsense/. 

Enable and start the timer:  
'systemctl enable report_temperature.timer --now'

## Store script at a differet location.

If you want the script to be stores elsewhere (not in /home/pi/tempsense/.) then you have to edit the file (as root!) /etc/systemd/system/report_temperature.service

Just change the line:  
ExecStart=/home/pi/tempsense/temperature_reporter.py

## Configure the script before running.

in temperature_reporter.py

comfigure:  
'  
INFLUX_IP = ""  
INFLUX_PORT = 8086  
INFLUX_DB = ""  
INFLUX_USER = ""  
INFLUX_PASS = ""  
'  

You can give the sensors costum names to be reoported by configuring the in the device names:  
device_names = {"28-000000000000":"Sensor_Name"}