Science Project by Nabil

This is my science fair project when I was in class 7 (2001). I was able to get 2nd prize in national science fair by this project. This is very useful for measuring water label & prevents unusual use of electricity. Very simple circuit diagram so you can try it for your house and industry. Cassette player being used for voice commaned. But you can use voice command circuit instead of cassette player. Connection should made perfectly otherwise short circuit may occured. For more info please contact with me.

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Modern Doorbell

This project is “Modern Doorbell”. This is very much useful when you are abroad from your house. This project was published in “The Daily Prothom Alo” in 2006. It became so popular I had to receive lot of call for several weeks. For new electronics hobbyist it may be not so easy. But I would like to ensure you I will offer all possible help from myself if you want to develop this project. I am very nervous are you able to identify me with these photo. So try to ………..

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please do comment about those project for its further

progress.

This project is very critical but valuable.

Fire Protection is very important for industry and house. But in our country fire protection not so available. These is automatic system.

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Quiz Master



This diagram is about quiz master. Every small circle indicates answer of the question. "Q-1" means question one. Thus 2 and three. You can expand it. Main mechanism of this project is there are several M.C.Q type question where right answer are pre-defined by electric circuit. By "Answer selection bar" we can select the answer touching it on the answer. If your answer is right the green light will on if your answer is wrong red light will on. Thus quiz become funny and the project act as a toy for kids. Answer sheet can be made with laminated the paper and using aluminum foil pack electric connection can be made. Light should be LED and battery exactly 3V. I am caring this project currently so anybody can see this project live by contact with me. So try your best to make it ................................................................................
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for special sms please visit www.bdsms1.blogspot.com