# Telegraph

![](/static/mb/lessons/telegraph-0.png)

## ~avatar

Build a telegraph between two @boardname@s to communicate with your friends!

## ~

## Duration: ~30 minutes

## Materials

* 2 @boardname@s, a battery holder, and 2 AAA batteries
* 4 crocodile clips

## Activities

* [Make](/projects/telegraph/make)  
* [Code](/projects/telegraph/code)

## ~button /projects/telegraph/make
Let's get started!
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