Install or Update emonWRT

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This howto shows how you can install the EmonWRT script and files on the OpenWRT OS. This can also be applied to update from an older version.

Prerequisites

WR703N is flashed with OpenWRT 12.09 Attitude Adjustment.
EmonWRT can access the internet.

Warning

The following files on OpenWRT will be overwritten. Do NOT follow this if you want to preserve them.

  • /etc/config/firewall
  • /etc/config/ucitrack
  • /etc/inittab

Steps

1. Log in the EmonRWT/WR703N via SSH.
2. Download the installer script with the following command:

$ wget http://lechacal.com/EmonWRT/system/v1.3/install_emonwrt.sh

3. Change permissions.

$ chmod 755 install_emonwrt.sh

4. Run the installer:

$ ./install_emonwrt.sh

A successful installation will look as below


root@OpenWrt:~# ./install_emonwrt.sh 

Installing/Updating EmonWRT with version 1.2

Connecting to lechacal.com (92.60.120.84:80)
emonwrt              100% |*******************************|   292   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
emonwrt              100% |*******************************|  1121   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
emonwrt_forwarder.sh 100% |*******************************|  1779   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
inittab              100% |*******************************|   107   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
firewall             100% |*******************************|  2009   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
ucitrack             100% |*******************************|   718   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
emonwrt.lua          100% |*******************************|   831   0:00:00 ETA
Connecting to lechacal.com (92.60.120.84:80)
cbi_emonwrt.lua      100% |*******************************|   756   0:00:00 ETA
Starting /usr/bin/emonwrt_forwarder.sh
Start Sucessful

If upgrading from earlier version you need to delete any reference to emonwrt_forwarder in /etc/rc.local

Additional Steps

If installing EmonWRT for the first time the package for stty must also be installed.

$ opkg update
$ opkg install coreutils-stty

-alternative way- if opkg update does not work use the command below instead.

$ wget http://lechacal.com/EmonWRT/system/v1.3/coreutils_8.16-1_ar71xx.ipk
$ wget http://lechacal.com/EmonWRT/system/v1.3/coreutils-stty_8.16-1_ar71xx.ipk
$ opkg install coreutils*