WebUI for a Raspberry Pi thermometer

WebUI for a Raspberry Pi thermometer writen in Node.js, measurring the temperature in the room.

Hardware

• Raspberry Pi
• DS18B20 temperature sensor
• RRU 4K7 resistor

Software

• RaspBMC or Raspbian
• Node.js

Drivers

• w1-gpio
• w1-therm

Thermometer usage

First, load the drivers

sudo modprobe w1-gpio  
sudo modprobe w1-therm

then determine the device id of your sensor (28-000004e23e98 in my case)

ls /sys/bus/w1/devices/   

open config.json and set the deviceId variable to your device id

var deviceId="28-000004e23e98";

and run the server

node server.js

Recording and showing temperature

You can use the /measure endpoint to measure the current temperature and automatically write it to a sqlite3 db file. I suggest you add it to cron.

If you want to see the recorder temeprature chart, visist the /history endpoint.