Introduction: Magic Wand POV Message Display Using Bluetooth Module

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A Persistence of Vision (POV) Wand is a small stick like instrument which can display messages (complete words) using only 5 LEDS (in this case) which blink in accordance with persistence of vision.Here we have provided the facility to display the desired text on POV using an android phone which sends the text to the POV wand via Bluetooth.

Persistence of vision:-

Persistence of vision is the commonly used term to describe the optical illusion whereby multiple discrete images seems to be a single image in the human mind and believed to be the explanation for motion perception in cinema and animated films.

Step 1: Components Required

· 330 ohms resistors x5

· Red leds x5

· Male connectors x6

· Arduino Nano x1 (Any Arduino board will work...Nano becomes kinda handy)

. HC-05 (bluetooth module)

· Female connectors x6

· Zero board x1 (You might want to try it on Bread Board first)

HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.
Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Bluecore 04-External single chip Bluetooth system with CMOS technology and with AFH(Adaptive Frequency Hopping Feature). It has the footprint as small as 12.7mmx27mm. Hope it will simplify your overall design/development cycle.

Step 2: Connections

Connect your circuit,as shown in the circuit diagram.

For any other Arduino Board the connections are same.

After testing on a Bread board you can implement the same on a PCB.

Step 3:

Just download and upload the code to your arduino.

Now connect your Android smartphone with the module,once connected you just have to send whatever text you want and see the magic..

Step 4:

This is how the final product will look like..

For the Android application mail us at :