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joeyoung/arduino_keypads
SPI Version

Hi, is it possible to maka a SPI version of this library for the MCP23S17?
  • Alyxvance
  • 11
  • Opened 
    on Dec 8, 2024
  • #18

joeyoung/arduino_keypads
not work for me ?

I connected everything correctly but unfortunately the CustomKeypad example does not work for me. I use PCF8575, I correctly specified the address at 0x20 I connected one button to pins P0 and P6 on the ...
  • EldritchE
  • 3
  • Opened 
    on Apr 25, 2023
  • #16

joeyoung/arduino_keypads
Keystrokes

With esp32, the keypad_i2c.h library performs repeating keystrokes. Is there a function to stop repeating?
  • fungreenfox
  • 2
  • Opened 
    on Dec 26, 2022
  • #14

joeyoung/arduino_keypads
Option to also use arduino ports?

I made some modifications for myself because I need a keypad of 10 rows and 8 columns maybe an option to add this to your code?? byte colPins[COLS] = {-4, -5, -6}; //connect to the column pinouts of ...
  • salautom
  • 5
  • Opened 
    on Dec 30, 2021
  • #13

joeyoung/arduino_keypads
Platform IO library

Please consider publishing this library to Platform IO so it can easily be used in Platform IO projects. This allows for automated updates, complex version pinning etc. without having to download a zip ...
  • sschueller
  • Opened 
    on Dec 12, 2021
  • #12

joeyoung/arduino_keypads
Multiple Keypad_I2C Objects

I would like to be able to use 4 keypads simultaneously, and have built a circuit with four PCF8574 IC s, each with unique addresses. To test this, I have created a modified version of your HelloKeypad_I2C ...
  • Maes2ro
  • 2
  • Opened 
    on Aug 25, 2020
  • #11

joeyoung/arduino_keypads
Help: Not working with PCF8575

This is my code and schematics , I am getting O E when connecting A1 and P00, A littel help will be apprecited. i tested all the pins with a led with this lib and all are working as expected. https://github.com/skywodd/pcf8574_arduino_library/blob/master/PCF8575/examples/ButtonBlink/ButtonBlink.ino ...
  • rahmanshaber
  • 14
  • Opened 
    on Jul 22, 2020
  • #10

joeyoung/arduino_keypads
Interrupt support on Keypad_I2C

Hi, thanks for this library, it s been lifesaving so far :) I m trying to get a matrix keypad connected via PCF8574 to work with interrupts and finding it requires direct pin access to the underlying ...
  • adrianbn
  • 4
  • Opened 
    on Jul 12, 2020
  • #9

joeyoung/arduino_keypads
Multiple expansion port chips

Hi, thank you for your work and updates. I really like it and use it on several projects. I was wondering if it would be too much to ask for an example or help using 2 chips, so we can break the 8x8 barrier ...
  • snotfod
  • 5
  • Opened 
    on Jun 29, 2020
  • #8

joeyoung/arduino_keypads
Keypad_I2C doesn't register key press

Hi, Thanks for this library! I downloaded the Keypad_I2C library and the CustomKeypad example to test my 4x4 membrane keypad with my I2C expander board. The board uses PF8574T (https://smile.amazon.com/gp/product/B07XD2K4GH). ...
  • adrianbn
  • 2
  • Opened 
    on Jun 22, 2020
  • #7
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