Component Translated Unfinished Unfinished words Unfinished characters Untranslated Checks Suggestions Comments
Glossary Trail Sense MIT 0% 8 9 59 8 0 0 0
Trail Sense Android MIT 90% 119 1,234 7,161 106 48 0 0
Trail Sense Store Metadata MIT 3% 113 5,787 35,141 113 0 0 0
Trail Sense User Guide MIT 0% 38 19,805 112,330 37 1 0 0

Overview

Project website kylecorry.com/Trail-Sense
Instructions for translators

https://github.com/kylecorry31/Trail-Sense#contributing
Project maintainers User avatar kylecorry31
Translation license MIT Trail Sense Trail Sense Android Trail Sense Store Metadata Trail Sense User Guide
15 hours ago

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Translated 80% 1,146 10% 3,219 13% 23,172
Needs editing 1% 14 1% 345 1% 2,069
Read-only 15% 216 1% 352 3% 6,191
Failing checks 3% 49 2% 825 2% 4,566
Strings with suggestions 0% 0 0% 0 0% 0
Untranslated strings 18% 264 88% 26,490 85% 152,622
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Resource updated

  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The “guides/en-US” file was changed. yesterday
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The White Noise tool can be used to help you fall asleep while camping or backpacking.

## Usage
Tap the white noise button to toggle the white noise on and off. A notification will be displayed while the white noise is playing, and you can tap it at any time to stop the white noise.

## Sleep timer
You can set a sleep timer to automatically stop the white noise after a certain amount of time. To set the sleep timer, enable the sleep timer switch and enter the amount of time you want the white noise to play for. The sleep timer will start counting down as soon as you start the white noise.

## Quick action
You can enable the White Noise quick action in the settings for the tab you want it on.

To use the quick action, tap the White Noise quick action button to toggle it on or off.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The Whistle tool can be used to signal for help. When using the whistle, it is recommended to turn your volume up to the maximum or connect to an external speaker. As with any tool in Trail Sense, it is always best to carry a real whistle with you.

## Whistle
Press and hold the whistle button to play a whistle sound.

## SOS
Tap the SOS button to continuously play the SOS distress signal (3 short, 3 long, 3 short).

## Help
Tap the help button to continuously play the help distress signal (3 long).

## Other signals
Long press the help button to play common signals.

- **Where are you** and **Acknowledged**: 1 long
- **Come here**: 2 long

## Quick action
You can enable the Whistle quick action in the settings for the tab you want it on.

To use the quick action, tap and hold the whistle quick action button.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The Weather tool can be used to roughly predict the weather.

## Weather prediction
The weather prediction appears at the top of your screen. This does not use the Internet and factors in pressure history, historical (30-year average) temperatures, and the clouds from the Clouds tool. It also attempts to estimate when the weather change will occur, displayed beneath the prediction. The accuracy of the time frame depends on if the clouds indicate a weather front; if it's detected, an approximate time will be displayed, otherwise, it's more vague, like "soon" or "later."

If the weather monitor is on, it records pressure history automatically. Otherwise, pressure updates only occur when you open the Weather tool. For accuracy, it's best to record pressure every 30 minutes.

You can adjust prediction sensitivity in Settings > Weather > Forecast sensitivity. Higher sensitivity may detect more patterns but might yield more false predictions.

## Weather monitor
The weather monitor runs in the background to record pressure history. Enable it by clicking the start icon at the bottom-right. This causes a notification to appear with the current prediction and an option to stop the weather monitor. You can also stop it by clicking the stop icon in the bottom-right.

To change the recording frequency, click the time under the weather monitor label at the bottom left and enter a new interval.

For better accuracy, grant Trail Sense Location permission to determine your elevation via GPS. This helps convert pressure to sea level pressure, improving prediction accuracy.

In Settings > Weather, you can customize the notification to show:
- **Pressure**: Displays the current pressure.
- **Temperature**: Displays the current temperature (refer to Thermometer guide for details).

You can also enable daily weather notifications in Settings > Weather > Daily weather notification. Without the weather monitor being active, you won't receive these notifications. The timing of this notification is configurable in Settings > Weather > Daily weather time.

You can disable weather monitor notifications in Android's notification settings for Trail Sense.

## Storm alert
If the weather monitor is active, Trail Sense can notify you of storms. Enable this in Settings > Weather > Storm alert. You can adjust the sensitivity in Settings > Weather > Storm sensitivity. Higher sensitivity might trigger false alerts, while lower sensitivity could miss some storms.

## Weather details
The Weather tool also provides more information about the current and predicted weather.

### Alerts
The Weather tool displays alerts when a storm is detected or historical temperatures suggest hot or cold conditions.

### Pressure
A pressure history chart is displayed at the top of the screen. Falling pressure may indicate an incoming storm, rising pressure suggests clearing weather, and steady pressure indicates no significant changes. The current pressure and its tendency (change over time) are listed below the chart.

The current pressure system is also displayed. Low pressure often means poor weather, while high pressure indicates fair conditions. Clicking on it provides a description of the pressure system.

You can change the history duration in Settings > Weather > "Pressure history".

### Temperature
The current temperature, sourced from historical data or the onboard thermometer, is shown in the weather list. Daily high/low temperatures are also provided using historical data. Clicking on the current temperature reveals a temperature history chart, while clicking on high/low temperatures displays a 24-hour temperature prediction chart based on historical temperatures.

### Humidity
If your device has a humidity sensor, the current humidity is displayed. Clicking on it reveals a humidity history chart.

### Clouds
The last logged cloud type appears in the weather list. Clicking on it provides a description of the cloud type.

### Weather front
The current weather front is displayed in the weather list. Fronts typically indicate weather changes and are often associated with precipitation and wind. Clicking on it provides a description of the weather front.

## Exporting weather data
You can export the recorded weather data to a CSV file with Settings > Weather > Export weather records.

## Quick action
You can enable the Weather Monitor quick action in the settings for the tab you want it on.

To use the quick action, tap the Weather Monitor quick action button to toggle it on or off.

## Accuracy
The weather prediction is a best guess using available sensor data and may not be accurate. If Trail Sense says it is going to be clear but you see what appears to be storm clouds rolling in, trust your instincts - sometimes storms roll in with gradual changes in pressure. Seek shelter if you sense a storm approaching, regardless of Trail Sense's prediction.

Climate normals (historic temperatures) are based on the 30-year average of the historic data and indicate what the weather usually is. The actual values may differ for a variety of reasons but should remain fairly close to the historic values. Large differences are normally due to a storm or other weather event.

Historic temperatures are estimated using a custom 30-year "climate normal" model derived from the NASA Global Modeling and Assimilation Office - MERRA-2 data (1991 - 2020).
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The Water Boil Timer tool helps you determine the necessary boiling time to make water safe for drinking, taking into account your current elevation since boiling time varies with elevation.

## Making water safe to drink
To ensure water is safe for consumption, you must first filter and then boil it. Please note that filtering and boiling will not render polluted water safe to drink. Follow these steps to make water potable:

1. Filter the water into a metal container.
2. Bring the water to a rolling boil.
3. Click the 'Start' button once the water reaches a rolling boil.
4. Your water is likely safe to drink when the timer expires.

By default, the timer utilizes your current elevation to calculate the required boiling time. Alternatively, you can manually select either a 1-minute or 3-minute duration using the buttons located at the bottom of the screen.

## Disclaimer
This tool uses recommendations from health organizations, but if done incorrectly or if the water is polluted you could still get sick. Use at your own risk.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The Triangulate Location tool can be used to determine the coordinates of a location using two known locations. This can be used to either determine your location if the GPS is not working, or to determine the coordinates of a location in the distance.

## Determine your location
If your GPS is not working and you want to determine your current location, you will first need to see two known locations. Ideally, these locations are at least 60 degrees apart for the best accuracy. The locations can be beacons or you can determine them using a map. For a guide on how to get the coordinates of a location from a map, see the 'Photo Maps' guide in the 'Calibrating from the Map Grid' section. Once you have the coordinates of the two known locations, you can use the following steps to determine your location:

1. Select 'My location' as the location to triangulate.
2. Enter the coordinates for the first known location and record the direction from where you are to that location as Location 1. You can click the camera icon on the right side of the direction field to sight the location using the camera.
3. Repeat for Location 2 using the second known location.
4. If your location can be determined, it will be displayed at the top of the screen.

## Determine a destination's location
If you are able to see a destination from multiple locations, you can use the Triangulate Location tool to determine the coordinates of the destination.

1. Select 'Destination' as the location to triangulate.
2. Record your location and record the direction from where you are to that location as Location 1. You can tap the GPS icon next to the location field to use your current location. You can click the camera icon on the right side of the direction field to sight the location using the camera.
3. Move to a new location that's at least 30 m / 100 ft from the first location and repeat for Location 2. You can put away your phone while you move; the tool will save what you entered.
5. If the destination can be determined, it will be displayed at the top of the screen.

## Triangulation map
As you enter locations, the map at the top of the screen will update to show the intersection of the two lines. You can use this to verify that the locations you entered are correct. The map always has North at the top.

## Share options
Once you triangulate a location, you have several options:

- **Beacon**: Create a beacon at the triangulated location. This will open the Beacons tool. For more information on beacons, see the 'Beacons' guide.
- **Navigate**: Navigate to the triangulated location. This will open the Navigation tool. For more information on navigation, see the 'Navigation' guide.
- **Share...**: Share the triangulated location. This will open the share menu, where you can copy the coordinates, share as a QR code, open in a map app, or share with another app (e.g. a text message).

## Reset
You can reset the tool by clicking the reset button at the bottom of the screen.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
Trail Sense is composed of a number of tools that are designed for hiking, backpacking, camping, and geocaching.

## Bottom navigation
The Navigation, Weather (if available), and Astronomy tools are available in the bottom navigation bar. These tools are also available in the tool list.

All other tools can be found in the Tools bottom navigation item on the far right.

## Tool list
The tool list can be accessed by tapping the Tools item in the bottom navigation bar. This will show a list of all tools available in Trail Sense.

Clicking on a tool will open it.

You can also long-press on a tool to see more options:
- **About**: Provides more details about what the tool does.
- **Pin/unpin**: Allows you to pin the tool to the top of the list.
- **User guide**: Opens the user guide for the tool.
- **Settings**: Opens the settings for the tool.
- **Experimental**: This will show tools that are still in development. These tools may not be fully functional. You can enable experimental tools in Settings > Experimental.

## Pinned tools
You can pin tools to the top of the tool list by long-pressing on a tool and selecting 'Pin'. This will make the tool appear at the top of the tool list. You can unpin a tool by long-pressing on it and selecting 'Unpin'.

You can also pin/unpin tools in bulk by tapping the edit icon to the right of the pinned tools header.

## Sorting tools
You can change the order of the tools by clicking the sort icon to the right of the tools header. This will allow you to sort by:
- **Name**: Sorts alphabetically by tool name.
- **Category**: Groups tools by category and sorts alphabetically within each category.

## Search
You can search for a specific tool using the search bar at the top of the tool list.

## User guide
A user guide is available for each tool. You can access the user guide by long-pressing on a tool and selecting 'User Guide'. You can also access the user guide by opening the 'User Guide' tool in the tool list.

## Settings
You can access the app settings by tapping the settings icon in the top right corner of the tool list. You can also access the settings by opening the 'Settings' tool in the tool list.

## Quick actions
You can enable quick actions at the top of the tool list in Settings > 'Tool quick actions'. You can find more information about each quick action by viewing the user guide for its respective tool.

All quick actions that begin with 'Tool:' will open the tool when clicked.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The Tides tool helps you keep track of tides at a specific location. Trail Sense operates offline, so you'll need to manually input the tides you wish to monitor.

## Create a tide table
Before venturing into coastal areas, consult an official tide table for accurate times and water heights. Once you have this information, follow these steps to import it into Trail Sense's Tide tool:

1. Click the tides button in the top-right corner of the screen.
2. Tap the '+' button in the bottom-right corner.
3. Optionally, provide a name and location for the tide.
4. Adjust the tide frequency, indicating how many high tides typically occur in a day (most places have 2, known as Semidiurnal).
5. Scroll down to the tide table section.
6. Click either 'H' for high tide or 'L' for low tide to toggle between them.
7. Select 'Time not set' and enter the date and time of the tide.
8. Optionally, click the '-' in the 'Height' column to input the tide's height.
9. To add another tide, tap the '+' button in the top-left corner of the table.
10. You can delete a tide by clicking the 'X' icon to the right of the tide.
11. Save the tide table by clicking the checkmark in the top-right corner.

For the best accuracy, input all tides for each relevant day. Trail Sense will distinguish between entered and estimated tides on the tide chart.

## Viewing a tide table
By default, the Tides tool displays the closest tide to your location when you open it. To change this, go to Settings > Tides > 'Show closest tide' to toggle between displaying the closest tide and the last tide you viewed.

To select a different tide, click the tides button in the top-right corner of the screen. This opens a list of all the tide tables you've created. Simply click on a tide to view it.

## Tide chart
The tide chart displays the tides for the current day. The X-axis represents time, while the Y-axis represents the tide height. A dot marks the current time on the chart. By default, today is selected, but you can change it by tapping the calendar icon at the top of the screen. Additionally, you can use the arrows to move to the next/previous date or long press the calendar to quickly jump to today's date.

At the top of the screen, you'll find the current tide level and, if available, the tide's height. A down arrow means a falling tide, while an up arrow means a rising tide.

The bottom of the screen displays a tide table for the current day. If the tide height is entered, it will be shown here; otherwise, it will be estimated. Estimated tides may not be entirely accurate and are based on the inputted tides.

## Editing a tide table
You can edit a tide table with the following steps:

1. Click the tides button in the top-right corner of the screen.
2. Click the menu button to the right of the tide you wish to edit.
3. Select 'Edit.'
4. You'll be taken to the same screen used to create the tide table. Edit the table as needed.
5. Save your changes by clicking the checkmark in the top-right corner.

## Deleting a tide table
You can delete a tide table using the following steps:

1. Click the tides button in the top-right corner of the screen.
2. Click the menu button to the right of the tide you want to delete.
3. Choose 'Delete.'

## Viewing tides on the map
By default, tides with a location entered will appear on the Navigation tool's radar compass and Photo Maps. To hide/show a tide, follow these steps:

1. Click the tides button in the top-right corner of the screen.
2. Click the menu button to the right of the tide you wish to hide or show.
3. Select 'Hide' or 'Show.'

## Estimating tides without a tide table
If you don't have access to a tide table, you can estimate tides using the Tides tool. Keep in mind that this is just an estimate, so it's always best to consult an officially published tide table when possible. If you know whether the tide is currently high or low, you can create a tide table with a single entry (using the current time and tide level), and the Tides tool will estimate the tidal cycle. This should only be used for short-term predictions, as accuracy decreases further away from the reference tide.

## Finding official tide tables
To locate an official tide table, search the Internet for tides at your location. Here are some community-recommended sites offering tide tables:

### Worldwide
- [tides4fishing](https://tides4fishing.com/)
- [tide-forecast.com](https://www.tide-forecast.com/)
- [SHOM](https://maree.shom.fr/)

### Germany
- [BSH](https://www.bsh.de/DE/DATEN/Vorhersagen/Gezeiten/gezeiten_node.html)

### Netherlands
- [Rijkswaterstaat](https://www.rijkswaterstaat.nl/water/waterdata-en-waterberichtgeving/waterdata/getij)

### UK
- [UK Hydrographic Office: EasyTide](https://easytide.admiralty.co.uk/)

### UK + Ireland
- [NTSLF Tides](https://ntslf.org/tides/predictions)

### USA
- [NOAA Tides & Currents](https://tidesandcurrents.noaa.gov/tide_predictions.html)
- [Tides.net](https://tides.net/)

## Disclaimer
Tide predictions are estimates and should not be relied upon exclusively. Whenever possible, use an official tide table and input the data into Trail Sense for accuracy.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
The Temperature Estimation tool can be used to estimate the temperature at a different elevation.

# Estimating temperature
To estimate the temperature at another elevation, you need to know your current elevation and the current temperature, as well as the elevation at which you want to estimate the temperature.

To estimate the temperature:

1. Either click 'Autofill' or enter the 'Base elevation' (your elevation) and 'Base temperature' (the temperature at your location).
2. Then enter the 'Desired elevation' (the elevation at which you want to estimate the temperature).
3. The estimated temperature will be shown at the top of the screen.
 
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  1. Trail Sense
  2. Trail Sense User Guide
  3. Yue (Traditional)
## Units
The units can be adjusted in Settings > Units. By default, the units are set based on your device's language settings.

- **Distance**: The unit to display distance measurements.
- **Pressure**: The unit to display barometric pressure measurements.
- **Temperature**: The unit to display temperature measurements.
- **Weight**: The unit to display weight measurements.
- **Coordinate format**: The format to display geographic coordinates.
- **Location share map**: The link to use when sharing a location.
- **Use 24-hour format**: Whether to use a 24-hour clock.
- **Add leading zero to time**: Whether to add a leading zero to the time (for example, 01:00 instead of 1:00).

## Sensors > Compass
Compass settings can be found in Trail Sense Settings > Sensors > Compass. Some devices may not have a compass sensor, but you will still be able to set declination.

### Azimuth
The current compass direction (azimuth) is displayed at the top of the compass settings. As you change settings, it will update to show the new direction.

### Calibrate
The reported accuracy of the compass is shown. If it is low, you can click this option to view instructions on how to calibrate.

### Source
- **Magnetometer + Gyro**: This is the default source and should work on most devices. It uses the magnetometer and gyroscope sensors to determine the direction. When the gyroscope is added in, the reading is typically less noisy. This source is provided by your phone's manufacturer.
- **Magnetometer**: This source only uses the magnetometer sensor to determine the direction. This source is provided by your phone's manufacturer.
- **Magnetometer + Gyro (Custom)**: This source is similar to the Magnetometer + Gyro source, but the calculations are done by Trail Sense. If the Magnetometer + Gyro source is not working correctly, try this source.
- **Legacy (Trail Sense)**: This source is similar to the Magnetometer source, but the calculations are done by Trail Sense. If the Magnetometer source is not working correctly, try this source.
- **Legacy (Android)**: This source is provided by Android and is not recommended to use. It is only included for compatibility with older devices, but could potentially work well on some devices.

### Smoothing
To reduce noise in compass readings, you can increase the smoothing setting. If using a source that has a gyroscope, a value of 1 is recommended. Otherwise, experiment with increasing this value until the compass appears to be working correctly when you rotate your phone. However, if you increase the smoothing too much, Trail Sense may ignore real compass changes.

### True north
To display true north instead of magnetic north, enable the "True north" setting. This will adjust the compass reading to account for magnetic declination, and it will match most maps.

### Magnetic declination
Magnetic declination is the difference between magnetic north and true north. You should ensure this is correct regardless of whether you are using true north or magnetic north.

### Auto adjust declination
Enabling the "Auto adjust declination" setting will automatically adjust the declination based on your location.

### Declination override
If you would prefer to manually set the declination, you can disable the "Auto adjust declination" setting and use the "Declination override" setting to set the declination. You can find the declination for your location on most maps or online. You can also click the "Set override from GPS" option to set the declination based on your current location (only sets it once).

## Sensors > GPS
GPS settings can be found in Trail Sense Settings > Sensors > GPS. If your phone supports it, multiple GNSS systems will be used (such as GPS, GLONASS, Galileo, and BeiDou).

### Location Source
You can choose to mock your location by disabling the "Auto adjust location" setting. This will enable the "Location override" setting where you can manually set your location.

When "Auto adjust location" is enabled, the location will be determined by your device's GPS.

### Require satellite fix
To get a more accurate location, Trail Sense requires at least 4 satellites to have a fix. If you are having trouble getting a location, you can disable this setting to allow for a location with fewer satellites (or if your phone does not support satellite counts).

### Cache
Trail Sense automatically caches your last location to quickly load details in certain tools. You can clear this cache temporarily using the "Clear cache" option in the GPS settings.

## Sensors > Altimeter
The altimeter is used to measure altitude. To adjust altimeter settings, go to Trail Sense Settings > Sensors > Altimeter.

### Elevation
The current elevation is displayed at the top of the altimeter settings. As you change settings, it will update to show the new elevation.

### Source
- **GPS + Barometer**: This is the default source and should work on most devices with a barometer. It combines the GPS and barometer to determine the altitude.
- **GPS**: This source only uses the GPS to determine the altitude. It is less accurate than the GPS + Barometer source.
- **Barometer**: This source only uses the barometer to determine the altitude. It is more accurate than the GPS source, but may drift over time and you will need to calibrate it before use.
- **Manual**: This source allows you to manually set the altitude. This is useful if you know the altitude of your location and it will not change.

### GPS + Barometer settings
- **Force calibration interval**: You can choose to force the altimeter to recalibrate using the GPS every so often. This is useful to compensate for drift in the barometer, which may be due to changes in weather or location.
- **Continuous calibration**: You can choose to continuously calibrate the altimeter using the GPS. This is useful if you are moving around a lot and want the most accurate altitude reading. When this is enabled, it prefers the barometer reading, but will slightly adjust it based on the GPS reading.
- **Reset calibration**: You can choose to reset the calibration of the altimeter. This is useful if you are in a new location and want to recalibrate the barometer.

### GPS settings
- **Samples**: The number of GPS samples to use when determining the altitude. A higher number will give a more accurate reading, but will take longer to calculate.
- **NMEA elevation correction**: The elevation provided by the GPS needs to be corrected to match the actual elevation. If this setting is enabled, it will use the correction factor provided by the GPS. If it is disabled, it will use the correction factor provided by Trail Sense, which may be more accurate.

### Barometer / manual settings
- **Elevation override**: If you are using the barometer or manual source, you can set the elevation manually. This is useful if you know the elevation of your location. If using the barometer source, this setting is used to calibrate the barometer and will change as you move.
- **Set override from GPS**: You can choose to set the elevation override using the GPS if you don't know your current elevation (only sets it once).
- **Set override from barometer**: If you know the current sea level pressure for your location, you can set the elevation override using the barometer (only sets it once). Only available on devices with a barometer.

## Sensors > Barometer
The barometer is used to measure air pressure. It can be used to predict the weather or determine your altitude. To adjust barometer settings, go to Trail Sense Settings > Sensors > Barometer.

If you have the Weather Monitor (see the Weather tool) enabled, you will see a chart of the barometric pressure history as recorded by your device. The colored line represents the calibrated pressure while the gray line represents the raw pressure. When you adjust the settings, the chart will update to show the new calibrated pressure. The goal is to have the colored line smoothly follow the gray line.

### Sea level pressure
Barometric pressure changes with altitude, which makes it difficult to compare pressure readings from different locations. To make pressure readings more consistent, enable the "Sea level pressure" setting. This will adjust the pressure reading to what it would be at sea level. Using this setting will increase the accuracy of weather predictions.

### Smoothing
To reduce noise in pressure readings, increase the smoothing setting. A value of around 15% is recommended. However, if you increase the smoothing too much, Trail Sense may ignore real pressure changes.

### Factor in temperature
To get a more accurate pressure reading, you can factor in the temperature. This will make the reading more prone to noise from your phone's thermometer, but it will also give you a more accurate reading of the actual air pressure.

## Sensors > Thermometer
Thermometer settings can be found in Trail Sense Settings > Sensors > Thermometer.

### Source
On most phones, you should use the historic temperature source as it will be more accurate.

- **Historic** temperature is estimated from 30 years of historical data. It's usually accurate, but not during extreme weather. You can calibrate it if it's wrong for your location.
- **Sensor** temperature is read from the phone's built-in thermometer. It's often inaccurate because it's affected by the phone's CPU and battery. You can calibrate it to improve its accuracy. If you power off your phone for a while, you will get a more accurate reading from the sensor.

### Smoothing
To reduce noise in temperature readings, you can increase the smoothing setting. If using the historic temperature source, this is normally not needed.

If the Weather Monitor (see the Weather tool) is enabled, you will see a chart of the temperature history as recorded by your device. The colored line represents the calibrated temperature while the gray line represents the raw temperature. When you adjust the settings, the chart will update to show the new calibrated temperature. The goal is to have the colored line smoothly follow the gray line.

#### Updating recorded temperatures

If you change the temperature source to "Historic", you can choose to update all previously recorded temperatures. This will replace the old temperatures with the estimated temperature from the historic data. This is useful if you previously recorded temperatures with the sensor and then switched to historic temperatures.

### Calibrating

1. Reset the thermometer calibration in Trail Sense.
2. Put your phone in a cold place for 10 minutes.
3. Note the temperature shown in Trail Sense as the minimum phone temperature.
4. Note the actual temperature of the cold place using an actual thermometer.
5. Put your phone in a warm place for 10 minutes.
6. Note the temperature shown in Trail Sense as the maximum phone temperature.
7. Note the actual temperature of the warm place using an actual thermometer.
8. Go to the Thermometer sensor settings in Trail Sense and enter the minimum and maximum temperatures you recorded, along with the actual temperatures you recorded.

**Caution:** Refer to your phone's manual to identify the designed operating temperatures, do not exceed these when performing calibration.

## Sensors > Camera
Camera settings can be found in Trail Sense Settings > Sensors > Camera.

### Augmented reality projection
The projection method determines how points get displayed onto the camera view. If you are experiencing issues with the points not aligning with the real world, try changing the projection method.

- **Estimated Intrinsics**: This is the default method and should work on most devices. It uses the camera's properties to estimate the projection.
- **Manual Intrinsics**: This is similar to the estimated intrinsics method, except that the calculations are done by the manufacturer. On some devices this does not work correctly.
- **Perspective**: This is a simple projection method that factors in the distance of the point from the camera. It is similar to intrinsics, but may be less accurate in some cases.
- **Linear**: This is the simplest projection method (also the fastest). It does not factor in distances.

## Sensors > Cell signal
Cell signal settings can be found in Trail Sense Settings > Sensors > Cell signal.

### Refresh signal cache
Your phone reports the current cell signal strength, but it may be outdated. You can choose to forcefully refresh the cell signal cache to get the current signal strength. This feature is only used by the Paths tool (Backtrack) when Settings > Paths > Record cell signal is enabled.

## Privacy
Privacy settings can be adjusted in Settings > Privacy.

- **Location**: Clicking this will take you to the GPS settings, where you can choose to use a mocked location.
- **Prevent screenshots**: Prevents screenshots from being taken while the app is open.

**Note**: Trail Sense does not use the Internet and all data is stored locally on your device.

## Errors
Some tools such as Navigation and Astronomy display error banners at the top of the screen. These banners can be disabled in Settings > Errors.

- **Compass unavailable**: The compass is not available on your device.
- **GPS unavailable**: The GPS is not available on your device.
- **Location not set**: The location is mocked but has not been set (uses 0, 0).
- **Compass accuracy**: The compass accuracy is low.
- **GPS timeouts**: The GPS has timed out and was unable to determine your location.

## Experimental
Experimental features can be enabled in Settings > Experimental. These features are not ready for general use and may not work as expected.

## Backup / restore
When switching to a new device or reinstalling the app, it may be helpful to backup your data and settings. This can be done in Settings > Backup / Restore.

- **Backup**: Creates a backup of your data and settings. This will save as a zip file which is unencrypted and contains location data, so only send it to people you trust.
- **Restore**: Restores a backup of your data and settings. This will permanently overwrite your current data and settings. You can restore from an older version of the app, but cannot restore from a newer version.

## Tools
Settings for each tool can be adjusted in the Settings > Tools section. For more information, see the guide for each tool.

## Theme
Theme related settings can be adjusted in Settings > Theme.

- **Theme**: The theme to use for the app.
- **Light**: A theme with a white background.
- **Dark**: A theme with a dark background.
- **Black**: A theme with a black background.
- **System**: A theme that follows the system settings.
- **Sunrise/sunset**: A theme that changes between light and dark based on the time of day.
- **Night**: A theme with a black background and a red filter to help maintain night vision.
- **Dynamic colors**: Whether to use your device's dynamic colors in the app, if disabled or unavailable colors in Trail Sense will be a shade of orange.
- **Compass dynamic colors**: Whether to use your device's dynamic colors in the compass (cardinal directions and certain markers on maps).
- **Compact mode**: Whether to use a more compact layout for the bottom bar (thinner and does not display labels).

## About
You can find additional information about Trail Sense in Settings > About.

- **Version**: The version of the app you are using.
- **Privacy policy**: A link to the privacy policy.
- **Email developer**: A link to send an email to the developer for feedback or support.
- **GitHub**: A link to the GitHub repository (source code) for Trail Sense.
- **Licenses**: A list of open source licenses used in Trail Sense.
 
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