TTN Mapper Documentation


TTN Mapper is a tool to map the coverage of The Things Network.

View the Project on GitHub ttnmapper/documentation

Helium integration

A HTTP Integration allows you to upload data to TTN Mapper.

The goal of TTN Mapper is to provide a map of the actual coverage of LoraWAN Hotspots. Contributors to TTN Mapper measure the performance of Hotspots in their vicinity and upload this information to the TTN Mapper website. Here the information is aggregated and shared with the TTN community.

Go to for the global coverage map.


In order to use TTN Mapper a LoRaWAN device with a GPS, capable of transmitting its GPS coordinates, is required. The minimal location information that needs to be sent by the device is its latitude and longitude. Preferably it should also send its altitude and HDOP values. If HDOP is not available, the end device should provide the accuracy of the GPS fix (in meters). As a last resort, if no accuracy can be provided, the satellite count can be sent. Devices that do not report a location are still used to determine if a Hotspot is online or not.

Once the integration is enabled any message sent by the end device will also be published to the TTN Mapper website. In order for TTN Mapper to correctly interpret the incoming messages, a payload decoder needs to be configured.

As an alternative the payload decoder for Helium Cargo or Helium Mappersmappers can be used as well with TTN Mapper.

If you are developing your own GPS enabled LoRa device please check the following Github repository for example end-device software and decoder functions to be used with them.

Setting up Helium for TTN Mapper

Following steps shall be followed to setup Helium for TTN Mapper:

Assuming you created a device and setup a payload decoder the meets the requirements as stated before:

  1. Create integration
  2. Create label and link devices
  3. Configure your TTN Mapper application in Flows

1. Create the integration

On Helium console, click on the add (+) icon in the bottom left and select Add integrations. Then click on HTTP. In the configuration page for the integration fill in the following:

Optional Headers

On Helium console:

3. Configure your TTN Mapper application in ‘Flows’

On Helium console, click Flows in the upper left corner.

Configuring Multiple Packets

To be able to see as much Hotspots as possible all available packets shall be purchased. Therefore configure Multiple Packets for the device group.

Verify the integration is working correctly

In order to verify whether the integration has been configured correctly, go to the Live Data page for your device on the Console. Switch on your device and make sure you see data appearing in console. Now go to the TTN Mapper website and in the menu select “Advanced maps”. In the “Device data” section fill in the Device ID field. In the Start Date and End Date fields choose today. Click on “View map” and you should see the data points sent by your end device.

TTN Mapper’s support for Helium is still a work in progress and therefore not all maps will show the collected mapping data. Using the per-device raw data map and csv is the most reliable way to make sure your data is accepted into the TTN Mapper database.


When should I use an “experiment” to map my coverage?

An experiment is a way to keep unrealistic coverage measurements away from the main map. Experiments should be used when testing new hardware or coverage is mapped from aeroplanes, balloons or any similar unrealistic altitudes.

In other words logging to the main map should only be done from roughly 0.5m-2m above ground level. “Ground level” should be interpreted as any place easily accessible by a human - or any place where an IoT device would commonly be installed. The top of a skyscraper is only acceptable if the skyscraper has a viewing deck that is publicly accessible. Man made hills and natural mountains are acceptable. The roof of a car or small delivery truck is fine. The roof of a bus or 14 wheeler truck is not as that is not a average acceptable height at which a sensor will be installed. The dashboard of a truck or bus is however roughly 2m above ground and therefore acceptable.

Enable or disable logging to an experiment