5. Octopus ADKeypad¶

5.1. Introduction¶

This keyboard uses an analog input to read the five key state with one IO port.
It can achieve many amazing interactive projects.

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5.2. Characteristics¶

The 3-pins ports is easy to plug and play..
It can work with micro:bit in 3V.

5.3. Specifications¶

Item | Parameter :-: | :-: SKU|EF04017 Power Input |3V-5V Connector Type|Analog Pins Definition|1-Signal 2-VCC 3-GND Response |Quick to response with high sensitivity Circuit|Simple Stability|Stable and durable

5.4. Outlook and Dimensions¶

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5.5. Quick to Start¶

Connection diagram¶

Connect to P1 port as the picture shows.

Take sensor:bit for example

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Program as the picture shows¶

Analog read the returned value.
When returned value is between 0~20, it means the button A is pressed, an icon is shown on the micro:bit.
By parity of reasoning.

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Reference¶

Links:https://makecode.microbit.org/_dqjTtAM5sfmy

You can also download it directly below:

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Result¶

Press different buttons on the ADKeypad, different graphs show on the micro:bit.

5.6. Relevant Cases¶

5.7. Technique Files¶