4.2.D - LED Matrix Countdown Timer
Our code will countdown from 5 to 0 and then clear the screen after two seconds.
Next
Step 2 Load the Code
The code pauses one second between each number change, so we would expect the time between starting at 5 and seeing the 0 appear would be 5 seconds...
Back
Next
Step 3 Test it Out!
- But we've noticed that when using the LED Matrix the micro:bit tends to run a little bit slower.
- If you compare this 5 second countdown with a stopwatch or some other time telling device you might notice it takes longer than 5 seconds to complete our countdown.
- In our tests the 5 second timer tends to take about 8.5 seconds to complete.
- How long does yours take?
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4.2.D - LED Matrix Countdown Timer
Teaching and Learning
Created on May 12, 2026
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Transcript
4.2.D - LED Matrix Countdown Timer
Our code will countdown from 5 to 0 and then clear the screen after two seconds.
Next
Step 2 Load the Code
The code pauses one second between each number change, so we would expect the time between starting at 5 and seeing the 0 appear would be 5 seconds...
Back
Next
Step 3 Test it Out!
Back