Magic Wand

Started working on the Magic Wand project.
POV. Persistence of vision is used here to create this magic wand.
Letters are created using the controlled switch on and off LEDs.

Please look at the video below.

I have implemented this using the guide provided
below http://www.thebox.myzen.co.uk/Raspberry/Magic_Wand.html

I have created two version one with PIC Micro controller 16F72 and one with 16F628A. 16F72 is currently working in progress. 16F628A uses minimal components and just checking the proof of concepts.
The Code is available in github.
https://github.com/kirant400/magicwand

In order to edit the the text displayed one shall change message variable and length of that variable display_length 

const uint8_t message[] = "AADI KIRAN";
const uint8_t display_length = 10; // length of message in characters

Pic 16F628A

 This has got a working voltage of 3.5V from a coin cell mount. I have not attached the schematic or PCB design of this only code is available.
Got 8 LEDs and one tilt switch (Mercury button) to check the direction of the movement.
PIC16F628A uses internal osc. and a pullup resistor for the button.

Pic 16F72

I had planned this to place inside an inch PVC and also have an inbuilt ICSP + a button to change the messages. This is work in progress proto and included the schematic and PCB design.
This is my first PCB design.
I have used Easy PCB software and heat transfer method for etching the copper clad.

 PCB created

 PCB for Print

Design schematic

I also want another button that will switch the display text.
Currently facing some issue in fixing everything in the PVC pipe.