Project

Lost objects slow us down and cause frustration and confusion.

Even current methods of object location are reliant on other devices or systems such as Bluetooth.

I have created a device for object location that is self-powered and self-contained and can be activated with a simple voice command.

Using my device, phones, wallets, purses, and anything else you can think to stick together will be easily and reliably located.

System

Methods

Audio Input / Output

• mini omni-directional microphone
• pistonic driver

Power

• CR2032 Battery
• toggle switch for power

Control

• ESP32-S3-DEVKITC-1

Speech Recognition

• audio conversion to spectrogram for comparison
• voice samples pre-loaded as spectrograms for comparison

Conclusion

The device accomplished the goal set out in the beginning. It is activated by a voice command and guides users to its location.

• I learned a lot about speech recognition and various methods that are and can be used to achieve device voice control. I also learned that for a voice control system to function effectively offline, a great deal of training data is required.
• Using higher quality materials and more time, the device can be improved to be smaller, more energy efficient, and more reliable. The device can also allow for custom wake-words with the correct programming. I hope that this design can be pushed to industry where it can become marketable.