How To Make A Homemade Electric Telegraph!

video How To Make A Homemade Electric Telegraph!
Make a homemade electronic telegraph for sending morse code messages to family and friends. No soldering required.

Two pieces of cardboard (5x7 inches)
Two pieces of cardboard (2x4 inches)
Duct tape
Jumbo paper clip
Mini Buzzer
One short wire
Light bulb from Christmas lights
Three long pieces of wire (from Christmas lights)
An aluminum pie pan
"D" battery connector/holder.

***This video will give you step-by-step instructions on how to make your homemade electric telegraph***

Please click on the link below to view the circuit diagram after you're done watching the video.

I tried to post the diagram here in this box as an image, but it wouldn't let me.

Anyway, thanks for watching my vid. If you like the vid please give me a good rating here on and Thanks!

Johnny Rock Stah
Sidharth s3 months ago

video not working

jayeshs15 months ago

Pls fix your video.It isn't loading

looop451 year ago
video is broken. please fix
umar241 year ago
very easy and simple project
supersis3 years ago
I'm a teacher, and wanting to make this, but where do I get a buzzer? I went to the local hardware store, and they were so very unhelpful.
Take a look at They have buzzers, beepers, and transducers starting at $.75. A 9 volt buzzer goes for $1.25. Take a look at my Instructable about a communications activity/game - it shows you something you can do with a pair of Morse Code buzzers, etc.
harry884 years ago
it would be nice if it were wireles
send a txt!
axeman9114 years ago
i made this it was awesome
roboguy4 years ago
This is cool. However, I traditional telegraphs use what is called a "sounder" instead of a buzzer (even simpler than a buzzer, too). The sounder only makes a noise when the key is pressed and released (it's silent if you hold the down). The Morse code is transmitted as the quiet spaces between the clicks.  Here's a link to give you the idea:

johnnyrockstah (author)  roboguy4 years ago
Oh cool. Thanks for the video!
I think I'm gonna build one right now..... Oh man!! no more wire :|  No buzzer :(  Better get back to my little inventory and get more wire from my hardware store, and I wish we had radio shack (but we don't in the whole country) :((

Nice telegraph by the way! Gonna get on with modifying it with proper switches and other stuff. Again nice telegraph :D
KE7GYO5 years ago
(removed by author or community request)
KE7GYO KE7GYO5 years ago
Jonny Rock Stah.
Your video on homemade electronic telegraph, was great.
I only wish that I could copy and print it out on paper.  TNX.  Tip.
hey wheres the writing to know how to put it all together dude
jakjak415 years ago
very cool and easy
pixbytrix6 years ago
I was looking for something simple for my students to do and this looks pretty good for that purpose. Cool!
dear mam, mam can i ask you some good titles for our investigatory project it must be manipulated examples machines please man i and my group need it to submit as our project dont worry im not intending something bad please reply as soon as possible i hope you kind and consideration for me but if you don't know anything please reply so i will know thank you very much man
whats a mini buzzer?
A mini buzzer is a small device that when charged with an electrical pulse buzzes until the transfer of energy stops. You can buy one at radio shack for $2.
Threeshirts7 years ago
My 11 year old daughter was intrigued by the ham radio guys at the AZ Science center who were teaching code. She made her name in morse code and wanted to do more. I wanted to avoid a complicated build but still have some fun. I think we will make this over spring break! Thanks for the easy and cheap idea!
wowuser38947 years ago
thAT was very interesting
bangbang0077 years ago
hahaha i love it man....
you're kidding me right. this is all i have to do? amazing!
johnnyrockstah (author)  GorillazMiko7 years ago
Yep...that's all you have to do. It's pretty simple. Thanks for watching my vid. Thanks for the comment as well :) Johnny Rock Stah