Web Reference: Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. We need a variable to keep track of how many seconds are left on the watch. 1. Go into Basic in the toolbox and pull an on starton to the workspace. 2. Ok, in Variables click on Make a Variable. Name the variable as seconds. Drag out a set to block and change the name with the dropdown to seconds. Place the variable into the on startblock. This means our timer will count down by 1000 milliseconds, which is actually one second, each time through the loop. To change the number of seconds left, get a ||variables:change by|| and place it below the ||loops:pause||.
YouTube Excerpt: G7 A9b Microbit - Count down timer 1 (Tutorial)
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