DIY LED Writing Board

There are Writing Board kits available in the market, but you can also make your own so that you can create the pattern as elaborate as youwant it to be. Tips & Warnings
There are LED circuit boards kit available for sale that you can buy. You can use the ready-made LED Writing board as a starting point so you can familiarize yourself with the different parts and their mechanisms. For more information on where to buy the kit, see Resources below. Protect your work surface and your hands when you are using ferric chlorine solution. The stain is very difficult to remove, make sure to wear rubber gloves and cover your table with plastic to protect them from stains.
More details pls read: http://www.ledwritingboard.cn/