how to interface android mobile phone with small circuit

[srithert]

how to interface android mobile phone with small circuit that will create message or notification of 3 actions

 

[Kirstin03Koly]

Mod edit! Off topic.. Phone Jamers are illegal..

 

[4pyros]

Blue Tooth?

 

[Misterbenn]

Using the Stereo audio output would be the simplest way... you'd need to write your own app.
or you could use BT, USB, wifi, NFC, or IR (depending on the phone).

Arduino already make boards that can communicate with phones through BT or USB or Wifi. and there are already apps to available.

Try using Google....

 

[ghostman11]

Mod edit! Off topic.. Phone Jamers are illegal..

they are becoming common in prison's to stop smuggled mobiles from being used.

 

[Deeg]

Take a look at the IOIO: https://www.sparkfun.com/products/11343

It uses BT to connect to an Android device.

 

[NorthGuy]

It all depends on where the phone is relative to the circuit. If the phone is close to the circuit then BT, WiFi or USB. If you carry the phone with you while the circuit is at home, then either SMS messages (may be not free) or through Internet.

 

[Ian Rogers]

Have you looked at basic4andriod...

This has USB libraries to talk to all manner of devices... Just check out the application examples..

 

[Jibby]

Refer the below link

**broken link removed**