The receiving node can be used to save the messages along with the GPS coordinates at which they were received into a .csv file. This .csv file can then be integrated into [Google Earth](https://earth.google.com), [Google Maps - My Maps](https://mymaps.google.com), or any other program capable of processing .csv files. This can enable you to visualize your mesh. Ensure you have [position precision](https://meshtastic.org/docs/configuration/radio/channels/#position-precision) in the default channel set to high, otherwise the collected data will not record your true location.
Be sure to turn off the module or disable sending when not in use. This will use a lot of time on air, slow down your mesh, and spam your channel. The module will automatically turn off after 8 hours.
The range test module config options are: Enabled, Sender, and Save. Range Test Module config uses an admin message sending a `ModuleConfig.RangeTestConfig` protobuf.
**Leave disabled when using the Android or Apple apps.** Saves directly to the device's flash memory (without the need for a smartphone), and is only available on ESP32-based devices.
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If enabled, all received messages are saved to the device's flash memory in a file named `rangetest.csv`.
To access this file, first turn on the WiFi on your device and connect to your network. Once you can connect to your device, navigate to `meshtastic.local/rangetest.csv` (or your_device_ip/rangetest.csv) and the file will be downloaded automatically. This file will only be created after receiving initial messages.
To prevent filling up the storage, the device will abort writing if there is less than 50kb of space on the filesystem.
Apple apps also have the option to download logged position data which is stored on your iPhone/iPad/Mac. Access this by clicking on the Nodes tab, selecting a node, then select Position Log and click Save. This data file does not require the Range Test module to be active.
Because the device will reboot after each command is sent via CLI, it is recommended when setting multiple values in a config section that commands be chained together as one.
1. [Download](https://www.google.com/earth/versions/#download-pro) and open Google Earth
1. Select File > Import
2. Select CSV
3. Select Delimited, Comma
4. Make sure the button that states “This dataset does not contain latitude/longitude information, but street addresses” is unchecked
5. Select “rx lat” & “rx long” for the appropriate lat/lng fields
6. Click finish
2. When it prompts you to create a style template, click yes.
1. Set the name field to whichever column you want to be displayed on the map (don’t worry about this too much, when you click on an icon, all the relevant data appears)
2. Select a color, icon, etc. and hit OK.
Your data will load onto the map, make sure to click the checkbox next to your dataset in the sidebar to view it.
### My Maps
You can use [My Maps](http://mymaps.google.com). It takes CSVs and the whole interface is much easier to work with.
Google has instructions on how to do that [here](https://support.google.com/mymaps/answer/3024836?co=GENIE.Platform%3DDesktop&hl=en#zippy=%2Cstep-prepare-your-info%2Cstep-import-info-into-the-map).
You can style the ranges differently based on the values, so you can have the pins be darker the if the SNR or RSSI (if that gets added) is higher.