dinsdag 17 maart 2020

Keyboard with Leds for Arduino



4X4 Matrix Keyboard For Arduino Array Module 16 Key Push Buttons Tastatur Switch Keypad Panel 4*4 Tasten 8LEDs Accessory DIY Kit
This module is advertised for Arduino, however i had plans to use it for FPGA experiments.
Just when i did think i needed to build something like this on a board as there could be a big delay in delivery due to the current situation in the world i received it this AliExpress item in my mailbag.
Small where where included, i just needed to screw them in position.




I did nit yet test it, however it seems an interesting small and cheap module to add some buttons and led's to projects or for development.

  • 16 keys in a 4*4 matrix
  • 4 keys connected to ground and with 1k resistors to VCC
  • 8 leds with 1k resistors and connected to VCC



KEY_A

KEY_B
(Photos taken with my phone, Schematic diagrams / circuits copied from AliExpress)
LED

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