How to connect a mouse (and use it to capture GPS coordinates from your cell phone)?

SteveJG · March 7, 2025, 1:12am

What isGSS ?

Sorry. As I said earlier I don't know how to use the mouse buttons like a switch. One of the Bluetooth extensions should be able to do it. I have a bluetooth keyboard that works with my tablet by pairing. Sorry, I do not have the code.

Asking Google, I get this advice (which might work to use a mouse button as a 'switch'
In App Inventor, you can use the BluetoothClient component to connect to Bluetooth devices, including those that act as switches or mice, and then use the BluetoothClient.ReceiveText event to process data sent from them. [1, 2, 3]

Here's a breakdown of how to approach this:

Setting up Bluetooth Communication: [2, 4]

Add the BluetoothClient Component: Drag the BluetoothClient component from the "Connectivity" palette into your App Inventor project. [2, 4]
Pairing and Connecting: Ensure the Bluetooth device (switch or mouse) is paired with your phone/device. You'll need to use the BluetoothClient.Connect block, and potentially a ListPicker to select the device from a list of available Bluetooth devices. [4, 5]
Data Transmission: Once connected, the Bluetooth device should send data to your App Inventor app. You can use the BluetoothClient.ReceiveText event to receive the data. [3]
Data Processing: In the BluetoothClient.ReceiveText event handler, you'll process the received data. This might involve parsing the data to determine the state of a switch or the position of a mouse. [3, 6]

Handling Switch/Mouse Input: [3, 7]

For Switches: If the Bluetooth device is a switch, the data received might indicate whether the switch is ON or OFF. You can use this data to update a label, change the background color, or control other components in your app. [3, 7]
For Mice: If the Bluetooth device is a mouse, the data received might include x and y coordinates. You can use this data to move an image on the screen, control a game, or interact with other components. [6]

Example Scenario (Switch): [3]

Receive Data: In the BluetoothClient.ReceiveText event, you might receive "ON" or "OFF". [3]
Update Label: Use the Label.Text block to update a label with the current state of the switch. [3, 7]
Control Components: Use the data to enable or disable other components, change colors, or trigger actions in your app. [3, 7]

Example Scenario (Mouse): [6]

Receive Data: In the BluetoothClient.ReceiveText event, you might receive x and y coordinates.
Move Image: Use the Image.X and Image.Y blocks to move an image on the screen based on the received coordinates.
Interact with Components: Use the mouse coordinates to interact with other components, such as buttons or labels. [6]

Important Considerations: [3, 8]

Bluetooth Module: Make sure your Bluetooth module (switch or mouse) is configured to send data in a format that App Inventor can easily parse. [3, 8]
Delimiter: If you are sending multiple messages, you might need to use a delimiter (e.g., "\n") to separate them. [3, 9]
Error Handling: Add error handling to your app to gracefully handle situations where the Bluetooth connection is lost or the device is not responding. [10]
Testing: Test your app thoroughly to ensure that it correctly receives and processes data from the Bluetooth device. [11.)]

Generative AI is experimental.

[1] How to make the "Switch Button" to enable Phone's Bluetooth when toggled?