Use MicroPython to Add a Custom Sensor to a Robot Kit - Adafruit Blog

TL;DR

The article discusses a project that enhances the HP Robots Otto Kit by adding custom sound detection capabilities. Using two microphones, the modified robot can detect loud noises and turn towards the source, essentially giving it the ability to "hear." The project includes designing circuits and 3D-printed parts, along with programming the robot using MicroPython and the Thonny IDE.