Repurpose an old Android tablet as an Android Auto head unit using Open Headunit app

Converting Tablets to Car Infotainment

Old Android tablets can be repurposed as Android Auto head units using the Open Headunit app. This application allows a phone to recognize the tablet as an Android Auto unit, displaying a large, car-optimized infotainment interface on the tablet's screen.

This method provides an alternative for drivers whose vehicles do not natively support Android Auto, or for those with older cars. It addresses a gap, particularly as some car manufacturers are reportedly reducing their support for Android Auto.

Open Headunit App Details

The Open Headunit app is available for purchase on the Google Play Store for approximately $4, or it can be obtained for free from GitHub for users with technical knowledge. The app supports multiple connection types, including USB, Wi-Fi, and Bluetooth, and can run Android Auto directly on the device if the tablet supports it.

A built-in configuration tool within Open Headunit guides users through settings to ensure compatibility with their specific hardware setup. The app also supports Gemini in Android Auto.

Setup and Connectivity

Setting up the Open Headunit app requires some experimentation to determine the best connection type for a given hardware combination. Users will also need to connect the tablet to the car's audio system to enable media playback through the vehicle's speakers. While wireless Android Auto can present challenges, USB connections often provide a reliable alternative.