Science Project Summary:

How to make your own telegraph machine.

Featured science project Beginner 1
Difficulty: Beginner 1
Required Skills: None
Safety concerns: None
[-] Less info
You can make your own telegraph for sending secret messages to a friend. This project may require a trip to the store, some patience, and maybe a bit of help, but it's well worth it. After connecting all your wires and buzzers, you'll be able to “talk by lightning” (as telegraphy was once called).