The Arduino gets a Bluetooth attachment and a set of code. Then you'll need Android Meets Robots , an app that lets you pair voice recognition with any Bluetooth module.

The Bluetooth Controlled Speech Recognition Unit: This bad boy is simple, and easy to use. With the help of the free AMR_Voice App, you can control 10x Arduino compatible outputs.

To achieve this, the Arduino Nano was kitted out with a DFRobot Gravity voice recognition module. It’s a super simple way to do voice recognition—it’s an entirely offline solution with no ...