Data logging is the process of automatically collecting and recording data over time.
This could be things like:

• How hot something gets during the day

• How often a button is pressed

• How loud a room becomes over an hour

• How fast a device moves

Instead of just taking a single measurement, data logging captures many readings over time, helping us see patterns and changes.

You interact with data logging every day! — You just may not call it that!

• Smartwatches track your steps and heart rate

• A car’s black box records speed and braking

• Weather apps show how the temperature changes all day

Data logging helps us:

• Understand what’s happening

• Make smart decisions

• Spot unusual changes

  
  For Example:

A greenhouse logs temperature. If it drops too low at night, the system can trigger a heater to protect the plants.

Scientists, engineers, and app developers all use data logging. Now you will too.

Alright, now that you know what data logging is, let’s try it for ourselves!

We’re going to create a data logging project using our Micro:bits.
In this activity, we’ll log every time Button A is pressed.
Later, you’ll be able to see that data — like a digital diary of what happened.