Skip to content

Latest commit

 

History

History
43 lines (27 loc) · 1.52 KB

readme.md

File metadata and controls

43 lines (27 loc) · 1.52 KB
Raw

Direct DS18B20 temperature sensing

This EmonHub interfacer can be used to read directly from DS18B20 temperature sensors connected to the GPIO pins on the RaspberryPi. At present a couple of manual setup steps are required to enable DS18B20 temperature sensing before using this EmonHub interfacer.

Manual RaspberryPi configuration:

1. SSH into your RaspberryPi, open /boot/config.txt in an editor:

sudo nano /boot/config.txt

2. Add the following to the end of the file:

dtoverlay=w1-gpio

3. Exit and reboot the Pi

sudo reboot

4. SSH back in again and run the following to enable the required modules:

sudo modprobe w1-gpio
sudo modprobe w1-therm

Configuring the Interfacer:

Login to the local copy of Emoncms running on the emonPi/emonBase and navigate to Setup > EmonHub. Click on 'Edit Config' and add the following config in the interfacers section to enable reading from the temperature sensors.

  • read_interval: Interval between readings in seconds.
  • ids: This can be used to link specific sensors addresses to input names listed under the names property.
  • names: Names associated with sensor id's, ordered by index.

Example DS18B20 EmonHub configuration:

[[DS18B20]]
    Type = EmonHubDS18B20Interfacer
    [[[init_settings]]]
    [[[runtimesettings]]]
        pubchannels = ToEmonCMS,
        read_interval = 10
        nodename = sensors
        # ids = 28-000008e2db06, 28-000009770529, 28-0000096a49b4
        # names = ambient, cyl_bot, cyl_top