Automatic Blackboard Cleaner

Our teachers use large amount of energy and time in cleaning up of blackboard innumerable times a day. 'Automatic blackboard cleaner' comes to help here. It is a very simple project requiring gearing arrangements, duster ,some mechanical linkages and a power source. It is easy to maufacture and very much useful too.
For further information contact me at :
affanmandilkar04@gmail.com