30 lines
833 B
Markdown
30 lines
833 B
Markdown
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# glowing pendulum block tutorial
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The glowing pendulum changes the screen brightness based on the acceleration measured on the BBC micro:bit.
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### Rebuild the game!
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The blocks have been shuffled! Put them back together so that...
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* all LEDs are turned on
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* the BBC micro:bit repeats code **forever** that
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* reads the acceleration along the ``y`` axis,
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* calculate the absolute value of the acceleration
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* scales down the acceleration value by a factor of `4`
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* uses the scaled value to set the screen **brightness**
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```blocks
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basic.showLeds(`
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# # # # #
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# # # # #
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# # # # #
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# # # # #
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# # # # #
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`)
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basic.forever(() => {
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let acceleration = input.acceleration(Dimension.Y);
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acceleration = Math.abs(acceleration);
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acceleration = acceleration / 4;
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led.setBrightness(acceleration)
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});
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```
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