GWG-40 configuration for OpenSprinkler

Setting up the GWG-40 requires some specialist knowledge and experience in handling mobile access.

With the LTE router it can OpenSprinkler You can easily access the Internet and update the weather data via an LTE or UMTS connection. The real problem is the external access, because the normal mobile phone providers do not allow a direct external connection to the mobile device. This is blocked by technical measures on the part of the mobile operator.

However, the situation is different with special providers, eg with “Things Mobile” there is a public IP address for access via the Internet for 2EUR/month. The data volume for querying weather data from OpenSprinkler is almost negligible, 1MB per month is rarely reached. Only the "own accesses" to the device increase the data flow slightly.

Another problem is the different boot time of LTE router and OpenSprinkler. While Opensprinkler boots very quickly, the LTE router takes a little longer - but that means that OpenSprinkler does not get an IP via the DHCP and switches to WiFi access mode. The solution here is to disable OpenSprinker DHCP and enter a fixed IP.

The following configuration steps apply to a SIM card with a data plan and public IP.

a) general initial setup:

  1. Activate the SIM card with your smartphone. If the card has a PIN, you must enter this later in the configuration.
  2. Insert the SIM card into the router
  3. Connect the router to a PC with a network cable
  4. Connect power to the router and wait for the green power LED to stop blinking and stay solid.
  5. Start your web browser and enter “http://192.168.1.1/” as the address.
  6. The “Geneko” login should appear with “Login first time” and ask for username+password. Enter “admin” as username and password.
  7. In the next step you will be asked for a OWN username and password. Enter this and note the data.
  8. Sign in with the new details. The Geneko configuration menu appears.

b) Set up SIM card:

  1. Click on “Settings/Mobile Settings” and check “SIM Enable” and “Data Enable”
  2. For the PIN activate “SIM Advanced settings” , “PIN enabled” and then enter the PIN there (only if the SIM has a PIN)
  3. You only have to enter further access data, such as APN and authentication, if this is required by the provider, e.g. for Vodafone IoT enter “iot.vodafone.de” here. In addition, the username+password from Vodafone's IoT portal (CHAP authentication).
  4. Activate “Connection settings” and “Persistent connection” for a permanent connection

c) Port forwarding: Access to OpenSprinkler set up

  1. Click on “Settings/Routing/Port Forwarding” and check “Enable Network Address Translation (NAT)”
  2. There should already be an empty row in the table. Enter the values ​​here as follows and click on “Add” and then “Save”. Port forwarding connects external port 81 to the OpenSprinkler Port 80. Note: I recommend 81 and not 80, otherwise the router's web interface will no longer be available externally.

d) Other settings:

To ensure permanent and secure operation, I would enable the option to restart the router every day:

  1. Click on “Maintenance/System Control” and enter “Daily” for “Scheduled Reboot” and 1h 0min for “Time” and confirm with “Save”.
  2. The router will then reboot every day at 01:00.

The device time should always be correct, so make the following settings:

  1. Click on “Maintenance/Date/Time Settings”
  2. Enter the correct time zone under “Time zone”, for Germany this is “Europe/Berlin”
  3. Activate “From mobile provider”
  4. If the time and date are not updated (note: data connection required!), then activate “From time Server” and enter a time server under “Time server address”, for Germany this would be “de.pool.ntp.org ”. Confirm with "Save".

e) OpenSprinkler set up:

  1. Connect to that OpenSprinkler according to the quick guide with your PC.
  2. Click on “Settings/Edit options/Advanced” and disable “dhcp”.
  3. Now enter the values ​​as follows and click on save at the top right. Then start the OpenSprinkler New.

NOTE: NTP must be 0.0.0.0

Now that everything is set up correctly, connect OpenSprinkler with the LTE router and restart all devices.

Once connected, you should openSprinkler via the IP address with port 81, i.e. “http://123.456.123.456:81”

If you change the IP address (e.g. because it is a public but not a fixed IP), then you should activate DynDns in the router and register accordingly. More information about this on the web.