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This is for use on a native Raspbian image. If using the emoncms image this is not necessary as emonhub is already installed.

This document will demonstrate how to prepare the rasberrypi to use Emonhub with the RPICT.

Emonhub will be used to forward the data from the RPICT series board and forward them to Emoncms.

We assume here a fresh install of raspbian has been installed and all steps to get the serial port operating have been carried out. See Howto_setup_Raspbian_for_serial_read.

Also make sure the RPICT board supports Emonhub format as output.

Install Emonhub

This is not necessary if you are using the image from Emoncms as emonhub is already installed.

To install emonhub we would recommend following the steps indicated on the emonhub github page.

We have summarized the commands to executre below:

wget sudo apt-key add mosquitto-repo.gpg.key cd /etc/apt/sources.list.d/ sudo wget sudo apt-get update sudo apt-get install -y mosquitto python-serial python-configobj sudo easy_install -U pip sudo pip install paho-mqtt sudo pip install pydispatcher

Open and modify this file below:

sudo nano /etc/mosquitto/mosquitto.conf

Set persistence parameter as false

persistence false

cd mkdir data git clone emonhub/install sudo service emonhub start

RPICT configuration

The format parameter should be set to emonhub, code number 3.

format = 3

Emonhub configuration

The configuration file for emonhub is located in /home/pi/data

Open this file. Delete all its content and replace with this one below:

[hub] ### loglevel must be one of DEBUG, INFO, WARNING, ERROR, and CRITICAL ### see here : loglevel = DEBUG #(default:WARNING)


[[/SerialDirect|SerialDirect]] Type = EmonHubSerialInterfacer [init_settings] com_port = /dev/ttyAMA0 com_baud = 38400 [runtimesettings] pubchannels = ToEmonCMS,

[[/emoncmsorg|emoncmsorg]] Type = EmonHubEmoncmsHTTPInterfacer [init_settings] [runtimesettings] subchannels = ToEmonCMS, #url =http://localhost/emoncms#uncomment to save on local pi apikey`` ``=`` ``xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx senddata = 1                    # Enable sending data to sendstatus = 1                  # Enable sending WAN IP to MyIP > sendinterval= 30                # Bulk send interval to in seconds


[[/11|11]] nodename = my_RPICT7V1 [rx] names = RP1, RP2, RP3, RP4, RP5, RP6, RP7, Irms1, Irms2, Irms3, Irms4,Irms5,Irms6,Irms7,Vrms scales = 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 units =W,W,W,W,W,W,W,mA,mA,mA,mA,mA,mA,mA,V

Change the node information as relevant. Also change the apikey to the one that emoncms gave you.