Hi raghu,
The design has been put on hold till I locate a ferrite bead that can sourced locally.

Please let me know about the local ferrite bead vendor as soon as you find one I tried in the local lemington
road [Mumbai] market but no success. I have one bead I took out from one of my old faulty keyboard can I use that one.

Regards & Thanks,
Prahlad Purohit