Tuya Smart Home – Breaking Free from the Cloud: Migrating Tuya Devices to Home Assistant (Local Control)

If you have dabbled in smart home tech, chances are you own a Tuya-based device. They are affordable, ubiquitous, and available under hundreds of different brand names. However, they share one major flaw: a heavy reliance on the Tuya Cloud.

Relying on a cloud server means latency, potential downtimes, and privacy concerns. If your internet goes down, your smart home breaks. As digital architects advocating for robust and private systems, we need a better way.

In this guide, we will walk through migrating your Tuya devices away from the cloud and integrating them locally into Home Assistant (running on a Raspberry Pi 4) using the LocalTuya integration.

Prerequisites

Before we begin, ensure you have the following:

• A Raspberry Pi 4 (or any other machine) running a working instance of Home Assistant.
• Your Tuya devices currently connected to the Tuya Smart or Smart Life mobile app.
• HACS (Home Assistant Community Store) installed on your Home Assistant instance.

Step 1: Create a Tuya IoT Developer Account

To control Tuya devices locally, we need their unique “Local Keys.” To get these, we must register as a developer. Don’t worry—it is completely free.

1. Navigate to the Tuya IoT Platform and create a free account.
2. Once logged in, go to Cloud in the left sidebar and click Create Cloud Project.
3. Fill in the details (Name: HA Local, Industry: Smart Home, Data Center: Choose the one closest to your location).
4. On the next screen, you will be asked to authorize APIs. Ensure that IoT Core, Authorization Token Management, and Smart Home Scene Linkage are selected. Click Authorize.

Step 2: Link Your Mobile App to the Developer Project

Now, we need to link the devices you have in your mobile app to this developer project.

1. In your Tuya IoT Project, navigate to the Devices tab.
2. Select Link Tuya App Account and click Add App Account.
3. A QR code will appear on your screen.
4. Open your Tuya Smart or Smart Life app on your phone, go to the “Me” tab, tap the scanner icon in the top right corner, and scan the QR code.
5. Confirm the login. Your devices will now populate in the Tuya IoT platform.

Step 3: Retrieve Your API Credentials

To automate the retrieval of your Local Keys, Home Assistant needs your project’s API credentials.

1. In your Tuya IoT project, go to the Overview tab.
2. Under the Authorization Key section, you will see your Access ID/Client ID and Access Secret/Client Secret.
3. Copy both of these strings to a secure notepad. You will need them in a moment.

Step 4: Install LocalTuya via HACS

Now, let’s move over to your Raspberry Pi 4 running Home Assistant.

1. Open Home Assistant and navigate to HACS.
2. Go to Integrations and click the Explore & Download Repositories button.
3. Search for LocalTuya and install it.
4. Once installed, restart your Home Assistant instance to apply the changes.

Step 5: Configure LocalTuya in Home Assistant

With the integration installed, it is time to bring your devices locally into Home Assistant.

1. Go to Settings > Devices & Services in Home Assistant.
2. Click Add Integration and search for LocalTuya.
3. You will be prompted to configure the integration. Choose the option to configure it using the Tuya IoT API.
4. Enter your Client ID and Client Secret (from Step 3), and select your user ID (usually available in the dropdown).
5. Submit the form. LocalTuya will now communicate with the Tuya API one time to automatically pull the Local Keys for all your devices.

Step 6: Add and Map Your Devices

LocalTuya will now discover the devices on your local network.

1. Select a discovered device from the dropdown list.
2. Because Tuya devices are highly generic, you will need to map the “Data Points” (DPs). For example, DP 1 is usually the main Power Switch, while DP 2 might be Brightness (for a bulb).
3. Assign the correct entity type (e.g., switch, light, sensor) to the corresponding DP.
4. Click Submit. Your device is now integrated into Home Assistant!

Bonus Step: Isolate Your Devices (VLAN)

Congratulations, your Home Assistant is now talking to your Tuya devices directly over your local network!

However, the devices themselves are still trying to phone home to the Tuya Cloud. To achieve true privacy and prevent unauthorized firmware updates, you should utilize Network Separation.

If you are using a capable router (like Ubiquiti UniFi or pfSense), assign your Tuya devices static IPs on an isolated IoT VLAN, and create a firewall rule that blocks their outbound traffic to the WAN (Internet), while allowing your Home Assistant Raspberry Pi to reach them. Check out my previous article on Zone-based Firewall Rules to see exactly how to set this up!

Conclusion

Migrating away from the Tuya Cloud takes a bit of technical legwork, but the reward is a faster, more reliable, and completely private smart home infrastructure. By keeping your data processing local on your Raspberry Pi, you are building a resilient architecture that answers to you—not a remote server.