When you first power on your TinyLineMarker robot, you'll need to navigate it to an open area to establish a GPS indicator. However, if you experience the GPS signal highlighted in red with a '0' next to the satellite icon, the robot is struggling to acquire the necessary GPS data, and you won't be able to start working until the connection is established. The tablet will typically show a progress bar for coordinates being sent to the robot, but it will never be complete. 

This guide will walk you through troubleshooting steps to help you resolve this issue and get your robot up and running quickly.

Wait and Reposition

1. After powering on your robot outdoors, wait 2-3 minutes to allow it to acquire a GPS signal.
2. If the error persists, power cycle the robot: turn it off, wait 10 seconds, and turn it back on.
3. Ensure the robot is in an open area with a clear view of the sky, away from buildings, trees, or other obstructions.

If the issue continues, proceed with the following troubleshooting steps (only possible for Pro X models):

External Cable 

1. Inspect both external connection points (see photos below) to ensure they are secure and free of debris.
2. Carefully examine the cable for any visible damage, such as cuts, fraying, or exposed wires.

Antenna

Inspect the Antenna:

1. Visually check the antenna dish for any cracks, dents, or other signs of damage.
2. Examine the connection point for any looseness or damage.

Check for Moisture or Loose Connections (Proceed with Caution):

1. Warning: This step involves opening the robot. Proceed only if you are comfortable with basic electronics and have the necessary tools. Make sure the robot is turned off and do not touch any internal electronics.
2. Locate the antenna receiver (refer to the photo below).
3. Gently unscrew the circular lid perpendicular to the connection joint using a small flathead screwdriver.
4. Inspect the interior for any water residue, loose connections, or signs of a poor solder joint.
   If you find any issues, please reach out to customer support for further assistance.

The "No Fix Error" indicates the robot is unable to connect to the RTK server, which is necessary for precise positioning.

You can solve the problem by following these steps. However, be aware you will only be able to do this if the 'Communication' setting is available on your tablet. 

1. Navigate to the app settings by tapping the gear icon() at the top left corner of your screen.  

2. If available, tap "Communication" settings. 

3. Check that the NTRIP login credentials are correct, if not reenter the server name, username, password, and mountpoint.

If this does not fix your problem, you don't have access to the 'communication' settings or you are unsure about login credentials, please call the support line for further assistance. You can find their contact information for support here.