This tutorial is intended to show the minimum steps to get a Bluetooth 4.0 CC2540 Module to connect to an Android Smartphone or tablet.

Step 1: Buy Arudino Nano on Ebay for $3

Step 2: Buy a Bluetooth BLE "SMART" Serial Uart on Ebay for $3.46

Step 3: Connect the Nano and the Bluetooth Serial Module

Step 4: Select Board Type to Be a Nano and Then Upload ASCII Example Code to Your Arduino

Step 5: Download HM BLE Terminal APP From Google Play Store

Step 6: Launch the BLE Terminal App

Step 7: Open the Menu Button Then Hit Connect So You Can Scan for New Devices

Step 8: Connect to the Serial Module

The android device will then search for available devices.

It should find a BT05. Select this device to connect to.

Step 9: Hit the Reset Button on the Arduino and You Should See the Communication Happen

From here you can write your own code. A Serial.print(" your text or data here "); is all that is needed.

Note you need to hit the clear screen button on the android app to see new data from your device.

I hope it works for you.

Step 10:

<p>Useful and easy guide</p>
<p>Will this work for iPad 2nd generation?</p>
<p>Unfortunately no. Ipad 2 has bluetooth 2.1 support and no support for the SPP (Serial Port Profile) that these devices utilize. See links below</p><p><a href="https://en.wikipedia.org/wiki/List_of_iOS_devices" rel="nofollow">https://en.wikipedia.org/wiki/List_of_iOS_devices</a></p><p><a href="https://support.apple.com/en-us/HT204387" rel="nofollow">https://support.apple.com/en-us/HT204387</a></p><p>https://learn.sparkfun.com/tutorials/bluetooth-basics</p>
<p>Good info, thank you for sharing.</p>

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