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Questions tagged [keypad]

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44 questions
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1 vote
1 answer
73 views

I bought an Arduino keypad shield. I want to operate a DC or servo motor when I press button on the keypad shield. In image, I connected keypad shield with an Arduino Uno by wiring up J1, J2, RW, E, ...
SungJin Park's user avatar
  • 21
0 votes
1 answer
106 views

I am using PICSimLab to simulate a keypad. The configuration of the keypad is as shown in the picture: and the code is: #include <LiquidCrystal.h> #include <Key.h> #include <Keypad.h&...
ElectronicsBeginner's user avatar
  • 3
0 votes
1 answer
163 views

I'm a beginner into Arduino so I have a little problem where I'm trying to do a countdown on LCD using while loop but I'm also trying to get a key input inside that same while loop. Problem is that ...
DevChips's user avatar
  • 13
0 votes
1 answer
98 views

I'm making a program to show numbers in a WS2812 LED and TM1637. I'm also using a common 4x4 keypad. The WS2812 LED is just DIY with 25 x 10. Only two values can be displayed in a LED matrix just now. ...
Lester Therr's user avatar
  • 13
3 votes
1 answer
651 views

Part of my current assignment involves reading the input from a 4x4 keypad connected to an Arduino UNO. While this may be done easily using <Keypad.h>, the project is being done with Tinkercad's ...
Maf95's user avatar
  • 33
1 vote
0 answers
110 views

this is the sample code where the user enters A to set the number of times the pet needs to be fed. When I click A on the keypad it asks for the user to set the number. However, the keypad still ...
michael filbert's user avatar
  • 11
0 votes
1 answer
121 views

I'm learning library making on arduino , I want to make a library that works with arrays a user sets, e.g: User sets array of int, when a certain function is been called the library will check if ...
Joseph Afodu's user avatar
  • 71
-1 votes
1 answer
482 views

I am trying to figure out how to use a 4x3 keypad and just want to receive the key numbers I select on the serial monitor. The problem I am getting is that some of the keys I type don't give me any ...
Campbell White's user avatar
  • 21
0 votes
1 answer
1k views

This was supposed to be the code for automatic pet feeder Got it from here1 The problem is that I always got a "No matching function for call to'DS3231 (const uint8_t &, const uint8_t &)&...
AEZAKMI 12's user avatar
  • 9
-1 votes
2 answers
360 views

When I run this code, my pin and pinCheck arrays are not being filled with the results of keypad.getKey(). If I print the value at each index, the result is blank. As far as I can tell, I am either ...
Ryan's user avatar
  • 3
1 vote
0 answers
287 views

I am trying to adapt a alarm clock sketch that used external buttons, but I would like to utilize a LCD Keypad Shield. The data sheet says all the buttons are on pin A0, so every button is "set ...
SV Savannah's user avatar
  • 167
1 vote
1 answer
153 views

I need to connect the following devices to an Arduino UNO board. The problem is that I run out of pins to be able to connect them all. Is there any way to do it? ultrasonic sensor yellow led green ...
Carlos Muñoz's user avatar
  • 11
2 votes
1 answer
2k views

I am working on a project that needs multiple digital signals and I am considering the CD74HC4067 (on a break-board) to work as a multiplexer. More specifically i am trying to build a keypad with ...
thermike's user avatar
  • 51
-1 votes
1 answer
325 views

I want to use 1X4 membrane keypad to enter 3 working parameters for LED string controlled by Arduino mini. Keypad is attached to D2-D5 pins and LED is attached to pin 12. My objective is to set the ...
alex 001's user avatar
  • 1
1 vote
0 answers
73 views

I have a small project that i want to show my keypad pressed on my GLCD but when i pressed keypad, even on serial it is fines but on GLCD it can't show my characters. Could you tell me what the ...
HẢI HỒ's user avatar
  • 9

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