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MICO Shield for Arduino

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The MICO Shield makes it easy for you to create an Arduino project that interfaces with a cell phone
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  • 10+: $15.00


The MICO Shield makes it easy for you to create an Arduino project that interfaces with a cell phone. The Arduino &cell phone interface unlock a whole new world of possibilities: projects where your Arduino can place phone and receive phone calls.
An example of aMICO project is where it receivesa phone call and presents the caller with a voice prompt: “press 1 for lights on”. MICO can then decode the caller’s button press and take action, in this case turn an output on. Of course everything is customizable: MICO has a microSD card slot so you can store your own voice and all MICO libraries and sketches are open source, free to download and hack.
MICO interfaces to a cell phone’s 3.5mm audio jack. MICO has no build-in cell module or antenna. Because of that, MICO provide some key advantages:
  • Universal:can work on ANY cell network over the world! GSM, CDMA, TDMA, analog…
  • Rich features:can utilize new features cell phones have. For example: on the iPhone, MICO can say commands to SIRI such as “post to twitter: temperature is 70degrees”. (of course, you could instead just use an old phonefor basic function)
  • Simple:no need to learn complicated AT commands. Phone is controlled just with Answer/End Call Button and voice out of the microSD card.
  • Perfect for quick/temporary projects:no need to buy GSM card just to run a quick demo project. Just plug in your own/friend’s phone. No need to tear it open to grab the card, or hack its software.
There are tons of projects you can create with MICO, few examples:
Example of projects you could make with MICO:
  • Make MICO call to report temperature. On your own voice!
  • Use as a simple audio player
MICO is an acronym for Mobile Interactive Voice Response & COntrol. The word mico in Portuguese and Spanish means small monkey. It's pronounced "mee co".
Board overview:
  • DTMF decoding IC
  • DTMF encoding – play back recorded tone off microSD
  • Answer/End Call button (physical and Arduino controlled)
  • Play out sound to phone and to a headset
  • Works both newer AHJ (iPhone/Android) and older OMTP phone standards
  • Incoming audio amplified and read in by Arduino
  • Foot print of Arduino UNO and Leonardo
For more info and to get started with your MICO Shield, visit
If you encounter any problems when using this product, here is where you can get technical support.

Technical details

Dimensions 140mm x90mm x30mm
Weight G.W 39g
Battery Exclude


HSCODE 8517709000
USHSCODE 8517180050
UPC 841454105923
EUHSCODE 8517180000




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