66. Case 65: Drum Beater#

66.1. Introduction#

Use Nezha 48 IN 1 Inventor’s Kit and trimpotto build the drum machine that can control the speed with a knob.

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66.2. Case building#

Materials Required#

Nezha 48 IN 1 Inventor’s Kit

trimpot

Structure Construction#

Parts List

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The structure is built as shown in the figure.

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Finished picture:

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66.3. Connection Diagram#

Connect the trimpot to J1 port, and the Motor to M1 port on Nezha Breakout Board .

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66.4. MakeCode Programming#

Step 1#

Click “Advanced” in the MakeCode drawer to see more choices.

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For programming the potentiometer, we need to add an extension library. Type “PlanetX” in the dialog box and click Search, then click Download this library.

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For programming the Nezha expansion board, we need to add an expansion library. Type “Nezha” in the dialog box and click Search, then click to download this code library.

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Notice: If you met a tip indicating that some codebases would be deleted due to incompatibility, you may continue as the tips say or create a new project in the menu.

Step 2#

Write the program as picture suggests#

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Reference#

Link: https://makecode.microbit.org/_L7shxbLtVJYY

You may also download it directly:

Result#

The knob trimpot allows you to control the rhythm of the drummer’s strikes.

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