4. Octopus ADKeypad

4.1. 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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4.2. Characteristics

  • The 3-pins ports is easy to plug and play..

  • It can work with micro:bit in 3V.

4.3. 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

4.4. Outlook and Dimensions

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4.5. 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.

4.6. Relevant Cases

4.7. Technique Files