The hardware itself is pretty straightforward. There is an Arduino Nano to run the speech recognition algorithm and a MAX9814 microphone amplifier to capture the voice commands.

Thanks to the inclusion of an Arduino Nano Servo shield and EasyVR3 Voice recognition module. Watch this video on YouTube.

The VR Stamp module includes a fully functional system based on Sensory's RSC-4128 mixed signal processor, a powerful 8-bit microcontroller inside a voice recognition system on chip (including 16 ...