Morse Code Telegraph DIY STEM Kit

Build your own working model of one of history’s most important communication devices — the telegraph!

This engaging DIY STEM kit lets students and hobbyists recreate the magic of Morse code while learning about electric circuits, switches, and electromagnetic signaling. Perfect for classroom demonstrations, science fairs, or just tinkering fun at home, this kit includes everything you need to assemble a functioning telegraph key — even a screwdriver!

When completed, pressing the wooden key completes the circuit, activating both a buzzer and a red LED light to simulate the familiar “dot and dash” beeps of Morse code.

Made from durable laser-cut balsa wood, this hands-on electronics project is designed for simplicity and repeatable classroom use. It’s a fantastic way to introduce fundamental STEM concepts like current flow, switches, conductivity, and communication systems. Great for science teachers, makerspaces, and camps looking for an educational project that’s as rewarding to build as it is to operate!

Features and Specifications:

• Build your own fully functional model telegraph
• Demonstrates basic circuit and communication principles
• LED and buzzer activate when the key is pressed
• Laser-cut balsa wood frame — lightweight yet sturdy
• Easy, no-solder assembly — screwdriver included
• Downloadable step-by-step instructions available
• Assembled size: approximately 3 x 2.5 x 1.5 in (7.6 x 6.4 x 3.8 cm)
• Ideal for classrooms, STEM programs, and hobby projects
• Suitable for ages 14 and up
• Requires 2 AA batteries (not included)

Customer Reviews

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  Fun Toy For The Price
Frank from Boston,MA
This is a fun little DIY assembly for STEM classes. BUT, it is very small and difficult to assemble. An inch or so bigger in the length and width would be so much better. Another difficulty is that the wire is stranded and frays easily. Solid copper would be better. I fought constantly trying to keep the wires from fraying so that I could insert them properly. I think the order of a few steps could be modified to make the assembly easier for students. A bottom plate would be nice to snap on underneath and keep the wires intact.