Modifying an existing project to target the Fitbit Versa 4 involves several steps, as there is no official SDK specifically for the Versa 4. However, you can adapt projects developed for earlier models like the Versa 3 or Sense 1. Hereâs a detailed guide on how to do it:
Step 1: Set Up Your Development Environment
1. Install Node.js and npm: Ensure you have Node.js and npm installed on your computer. These are essential for managing dependencies and building your project.2. Use the Fitbit SDK: Although there's no specific SDK for the Versa 4, you can use the latest available SDK versions that support earlier models. This typically involves using the `@fitbit/sdk` and `@fitbit/sdk-cli` packages.
Step 2: Create or Modify Your Project
1. Create a New Project: If you're starting from scratch, use the command `npx create-fitbit-app myclockface` to scaffold a new project. If you have an existing project for another model, you can modify it.2. Modify the `package.json` File: Update the `devDependencies` in your `package.json` to include the latest SDK versions. For example:
json
"devDependencies": {
"@fitbit/sdk": "~6.2.0-pre.1",
"@fitbit/sdk-cli": "~1.8.0-pre.10"
}
3. Specify Build Targets: Ensure your `package.json` includes the build targets for the Versa 4. Although the Versa 4 is not explicitly listed, you can target it by using the build targets for similar models like "rhea" and "hera":
json
"buildTargets": [
"rhea",
"hera"
]
Step 3: Build and Deploy Your Project
1. Install Dependencies: Run `npm install` in your project directory to install all dependencies.2. Build Your Project: Use the command `npx fitbit build` to build your project. This will generate a `.fba` file that you can install on your Fitbit device.
3. Upload to Fitbit Gallery: You can upload your `.fba` file to the Fitbit Gallery as a private clock face. This allows you to install it on your Versa 4.
Step 4: Testing and Debugging
- Simulator Use: Although there's no official simulator for the Versa 4, you can use the simulator for earlier models to test and debug your project. This can help identify potential issues before deploying to the Versa 4.- Direct Deployment: Some users have managed to use the developer bridge for direct deployment, but this method is more complex and not widely documented.
Additional Notes
- Third-Party Apps: Currently, the Versa 4 does not support third-party apps through the Fitbit App Gallery, but you can still develop and install custom watch faces and apps using the method described above[7].- Versa 3 Compatibility: Projects developed for the Versa 3 often work on the Versa 4 without significant modifications, making it a good starting point for development[1].
By following these steps, you can adapt existing projects to work on the Fitbit Versa 4, despite the lack of specific SDK support.
Citations:[1] https://community.fitbit.com/t5/SDK-Development/Custom-faces-on-Versa-4/td-p/5501874
[2] https://www.youtube.com/watch?v=iwRdxKvZin0
[3] https://documents.4rgos.it/v1/static/1153729_R_D001
[4] https://support.google.com/fitbit/answer/14236402?hl=en
[5] https://www.youtube.com/watch?v=o_JYxO3GtGs
[6] https://www.youtube.com/watch?v=tF8HDt22_ZI
[7] https://www.reddit.com/r/fitbit/comments/xnoog9/psa_the_new_sense_2_versa_4_do_not_support/
[8] https://community.fitbit.com/t5/SDK-Development/Fitbit-Versa-4-SDK-support/td-p/5570528