4. Octopus ADKeypad(EF04017)
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.
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
4.5. Quick to Start
Connection diagram
Connect to P1 port as the picture shows.
Take sensor:bit for example
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.
Reference
Links:https://makecode.microbit.org/_dqjTtAM5sfmy
You can also download it directly below:
Result
Press different buttons on the ADKeypad, different graphs show on the micro:bit.