Issues

• The library does not work on the Arduino UNO R4 Wi-Fi.

  Chris--A/Keypad#57 · Filter by author Dominguserr opened on Jul 2, 2026

• RP2040 Compatibility Fix for Keypad Library

  Chris--A/Keypad#55 · Filter by author djairjr opened on Apr 17, 2026

• Is it possible to detect multiple buttons pressed at the same time

  Chris--A/Keypad#52 · Filter by author lzakrzewski opened on Aug 27, 2024
  1

• Upper Key Limit?

  Chris--A/Keypad#51 · Filter by author degroof opened on Aug 2, 2024
  3

• header file not operating properly

  Chris--A/Keypad#50 · Filter by author cpthacke opened on Mar 19, 2024
  1

• Library links to wrong page

  Chris--A/Keypad#49 · Filter by author dougp2 opened on Mar 4, 2024

• Max number of characters in key name

  Chris--A/Keypad#48 · Filter by author JoshuaOJones opened on Dec 22, 2023

• This library is incompatible with Raspberry Pi Pico (W)

  Chris--A/Keypad#47 · Filter by author mwwojcik2017 opened on Nov 20, 2023
  1

• The readings are unstable on the Uno R4 board.

  Chris--A/Keypad#46 · Filter by author eMUQI opened on Jul 11, 2023
  3

• Keypad.h and ESP8266WiFi.h not cooperating

  Chris--A/Keypad#44 · Filter by author jendam99 opened on Feb 8, 2023

• How to remove the limit on the number of keystrokes of the Keypad Event

  Chris--A/Keypad#43 · Filter by author Krotoffv opened on Nov 4, 2022

• change constructor prototype to allow const pin arrays

  Chris--A/Keypad#42 · Filter by author JM-FRANCE opened on Apr 8, 2022

• RaspberryPi Pico - adding library kills I/O pullups

  Chris--A/Keypad#41 · Filter by author david284 opened on Mar 14, 2022
  2

• Bigger size matrix - 25 x 25

  Chris--A/Keypad#40 · Filter by author mehulddj opened on Aug 23, 2021

• Don't #define OPEN and CLOSED

  Chris--A/Keypad#39 · Filter by author tig opened on Jun 29, 2021

• Use const for constructor's arguments..

  Chris--A/Keypad#38 · Filter by author arduino12 opened on Jun 28, 2021

• Avoid nonClick event

  Chris--A/Keypad#37 · Filter by author thalesmaoa opened on Jun 21, 2021

• PROGMEM keyword does not work.

  Chris--A/Keypad#34 · Filter by author louist103 opened on Mar 29, 2021

• Change old "boolean" to "bool", as it is deprecated

  Chris--A/Keypad#33 · Filter by author jv41 opened on Feb 13, 2021

• Does not work on the Nano 33 IOT

  Chris--A/Keypad#32 · Filter by author DarkKaplah opened on Feb 2, 2021

• Change IDLE to IDLE_KEY in Keypad.cpp less collision other Libs

  Chris--A/Keypad#31 · Filter by author Meins321 opened on Jul 1, 2020

• Mega2560 pin 9 high when waitForKey() used

  Chris--A/Keypad#30 · Filter by author AJMartel opened on Jan 20, 2020

• hello, I need a solution

  Chris--A/Keypad#26 · Filter by author irgiawan opened on Mar 21, 2019

• would it be posible to change the char to int to allow more keys?

  Chris--A/Keypad#25 · Filter by author garyocampo opened on Nov 16, 2018
  2

• Support to STM32F103C8T6

  Chris--A/Keypad#21 · Filter by author carloshcarvalho opened on Jun 17, 2018
  3