Make Your Own Spy Bug (Arduino Voice Recorder)

In this project I will show you how I combined an Arduino Pro Mini with a couple of complementary components in order to create a voice recorder which could also be abused as a spy bug. It has a run time of around 9 hours, is small and super easy to use. The recording quality might not be the best, but it should be suitable for many purposes. Let's get started!

The video gives you all the information you need to create your own Spy Bug. During the next steps though I will present you some additional information.

Here you can find a parts list with example sellers for all the components that you will need (affiliate links).

Aliexpress:

1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_d62ALdV

1x LiPo Battery: https://s.click.aliexpress.com/e/_dWbxwQm

1x TP4056 LiPo Charge/Protection Board: https://s.click.aliexpress.com/e/_dX8n0hp

1x Micro SD Card Adapter: https://s.click.aliexpress.com/e/_dUy68bd

1x Electret Mic + MAX9814 Amp: https://s.click.aliexpress.com/e/_dT18MYS

1x Tactile Switch: https://s.click.aliexpress.com/e/_dXIIMcP

1x 5mm Red LED: https://s.click.aliexpress.com/e/_dV63r7D

1x 2kΩ Resistor: https://s.click.aliexpress.com/e/_dTPpXjt

Ebay:

1x Arduino Pro Mini: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x LiPo Battery: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x TP4056 LiPo Charge/Protection Board: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Micro SD Card Adapter: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Electret Mic + MAX9814 Amp: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Tactile Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 5mm Red LED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 2kΩ Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

1x Arduino Pro Mini: http://amzn.to/2FHf9PY

1x LiPo Battery: http://amzn.to/2DZnbY5

1x TP4056 LiPo Charge/Protection Board: http://amzn.to/2EE8pTT

1x Micro SD Card Adapter: http://amzn.to/2nHrsVd

1x Electret Mic + MAX9814 Amp: http://amzn.to/2FHzW60

1x Tactile Switch: http://amzn.to/2BTCxYg

1x 5mm Red LED: http://amzn.to/2BTCyLO

1x 2kΩ Resistor: http://amzn.to/2nKX5NN

Here you can find the schematic and pictures of my finished Spy Bug. Feel free to use them as a reference.

Here you can download the Arduino code for the project. Use an FTDI breakout to upload it to the Arduino Pro Mini. And don't forget to download/include the TMRpcm library:

https://github.com/TMRh20/TMRpcm

You did it! You just created your own Spy Bug!

Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab
https://www.facebook.com/greatscottlab