Save the Day with Smart Electronics · Lesson 1
Wire the LEDs and build a traffic light
Get the micro:bit driving real components through the expansion board.
Open the Lesson 1 worksheet
Open Worksheet: Lesson 1 Wiring LEDs with micro:bit Expansion Board and put your name on your copy.
Using the Kitronik expansion kit instead? Use this one: Worksheet: Lesson 1 Wiring LEDs with micro:bit Expansion Board (Kitronik kit) · Make a Google copy
Wire the LED modules
Seat the micro:bit in the expansion board, then connect each LED module to the pin the worksheet names.
Check every connection before you plug in power.
Program the traffic light
Code the red, yellow, and green lights to run in the right order.
Set the timing so a driver would actually have time to react to each change.
⚡ Cut the power before you rewire
Unplug the battery or the USB cable before you move a module. Rewiring a live board is the fastest way to kill a component.
If a light never comes on, check the pin number on the board against the pin number in your code. They disagree more often than the wire is bad.
📤 Turn it in
Click Start Assignment at the top right, then upload your finished worksheet or paste the share link to it.
Need help submitting your worksheet? Watch the tutorial below.