Hand motion detection

In this Innovation Lab post, you will learn how to implement a hand motion detection algorithm — applied in a faucet application — using the A121 Pulsed Coherent Radar sensor. The system provides a low power solution with continuous hand motion monitoring, enabling improved hygiene though a touchless interface and reduced water consumption. Thanks to the high accuracy, the sensor reliably detects the presence of hands even when the water is running or if the sensor is covered in dirt or soap. The benefits of using the A121 sensor are low power consumption, high precision, small size, and high robustness.

More information about the algorithm can be found on the Acconeer document site.

This faucet application can be implemented using the Exploration Tool and the application written in C.

One XE121 Evaluation Board and one XC120 Connector Board are necessary for this implementation.

• XE121 Evaluation Board can be purchased from DigiKey
• XC120 Connector Board can be purchased from DigiKey

To get started with the Evaluation kit and the Exploration tool, go to the Acconeer documentation.

In Exploration Tool, click “Hand motion detection” on the left-side menu, and then click “Start measurement” on the right-side menu to start.

The Entry+ Module XM125 and the XM126 IoT Module can be purchased from DigiKey.

The applications written in C can be downloaded on the Developer site.

• XM125
• XM126

If you try this, or work on something else, we’d love to hear about your project! Please get in touch with us on innovation@acconeer.com.