Description
This 4×5 Matrix Array 20 Key Membrane Switch Keypad Keyboard high-quality soft-touch feeling button keypad with 100 million life-stroke lifespans and good resistance to environmental conditions.
This 20-button keypad provides a useful human interface component for microcontroller projects. Convenient adhesive backing provides a simple way to mount the keypad in a variety of applications.
Features :
- Ultra-thin design & adhesive backing provides easy integration to any project
- Excellent price-performance ratio
- Easy communication with any microcontroller
- 5 pins 2.54mm pitch connector, 4×5 type 20 keys.
- The sticker can peel off for adhesive mounting.
- Used widely in industrial and home electronic equipment, instrument, etc.
- This allows a microcontroller to ‘scan’ the 9 output pins to see which of the 20 buttons is being pressed.
Specification
Getting started with the 20 Key Membrane Switch Keypad Keyboard 4×5 Matrix Array
We are going to show how to connect a 4×5 Matrix Array 20 Key Membrane to an Arduino.
Step1: Hardware required
- Arduino Uno
- 4×5 Matrix Array 20 Key Membrane
Step2: Connecting the Hardware
The connections are pretty straightforward. Start by connecting pin 1 of keypad to digital pin 10 on Arduino. Now keep on connecting the pins leftwards like 2 with 9, 3 with 8 etc.
Step3: Upload the Code
First downoad keypad.h library here.