# telegraph lesson display beautiful images on the BBC micro:bit. ## Topic Telegraph ## Quick Links * [activity](/lessons/telegraph/activity) ## Class Year 7 ## Prior learning/place of lesson in scheme of work Learn how to convert your BBC micro:bit into a telegraph using a second BBC micro:bit as well as pin P1, P2, 3V, GND, and crocodile clips (or spring clips). The connect BBC micro:bit uses pins P1, P2, 3V, GND. ## Objectives * learn how to setup the BBC micro:bit with crocodile clips * learn how to telegraph to another BBC micro:bit