Arduino: Building exciting LED based projects and espionage devices
by Adith Jagdish Boloor, Samarth Shah, Utsav Shah, Marco Schwartz
Summary
In this chapter, you learned how to build a spy microphone based on a simple amplified microphone, Arduino, and a microSD card. The spy microphone can be set up to record audio continuously for a given amount of time.
Of course, there are many things that you can now do in order to improve this project. You can, for example, use a battery to power the project to make it autonomous. Then, you just need to place it in a room in which you want to record a conversation and just come back later to retrieve the SD card with the recording.
You can also connect a motion sensor to the project and use that to automatically start a recording when motion is detected in a room in order to intercept conversations with total discretion.
Another interesting ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access