Membrane Keyboard 16 Keys / Keypad 4x4 Matrix

This keypad is perfect for building a combination lock with Arduino, for example. You can also use it on a Raspberry Pi or other controllers. The keypad is very thin and can be easily stuck on for mounting. Libraries for driving it already exist and you can find them in the Arduino Library Manager by searching for Keypad. To save pins on your controller, I recommend driving the keypad with an i2c port expander PCF8574. As the PCF8574 is driven via i2c, you only need two data pins.

If you have any questions or problems driving it or suggestions for the product description, just send us an email or use the review function. We are happy to help you.

Technical Details:

• Maximum Voltage: 35V
  
• Maximum Current: 100mA
  
• Connection: 8 Pin
  
• Pitch: RM2.54
  
• Cable Length: approx. 80mm
  
• Mounting: Self-adhesive
  
• Keypad Size: 77 x 69 x 1mm
  
• Weight: 7g
  

Delivery Contents: 

1x Foil Keyboard 16 Keys / 4x4 Matrix Keypad