# telegraph activity 

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

## ~avatar

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

## ~

## Duration: ~30 minutes

## Materials

* @boardname@, battery holder and 2 AAA batteries
* Crocodile clips

## Activities

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

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