1824

1824 Datasheet

PRODUCT ID 1824

Part	Datasheet
1824	1824 (pdf)

PDF Datasheet Preview
3x4 Phone-style Matrix Keypad PRODUCT ID 1824 Description Hey, Jenny, I've got your number! And I'm going to dial 867-5309 into this very nice phone-style matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of plastic with sturdy plastic buttons. The keys are connected to a matrix so you only need 7 microcontroller pins 3-columns and 4-rows to scan through the pad. There's a great Matrix Keypad Arduino library that should work great with this item with minor adjustments. It's basically a sturdier version of our Membrane 3x4 Matrix Keypad and comes with 7 or 8 header pins pre-soldered on for easy plugging. Starting from the left there are three column pins, and then to the right are the four row pins. If yours has an 8th pin, its not used and you can just leave it disconnected Technical Details o Force 160-180g o Contact Resistance o Weight 23g There is a very nice Matrix Keypad Arduino library that works great with this item. The only thing we suggest is to change the initialization code in the examples to this: #include "Arduino.h" #include "Keypad.h" const byte ROWS = 4 //four rows const byte COLS = 3 //three columns char keys[ROWS][COLS] = byte rowPins[ROWS] = 6, 7, //connect to the row pinouts of the keypad byte colPins[COLS] = 3, //connect to the column pinouts of the keypad Keypad = Keypad makeKeymap keys , rowPins, colPins, ROWS, COLS ; void Serial.begin 9600 ; void char key = keypad.getKey ; if key != Serial.println key ; This will swap the * and # keys and also let you connect to the Arduino with all the pins in order/in a row starting from digital 2 thru digital 9 Engineered in NYC Adafruit

PDF Datasheet Preview

3x4 Phone-style Matrix Keypad

PRODUCT ID 1824

Description Hey, Jenny, I've got your number! And I'm going to dial 867-5309 into this very nice phone-style matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of plastic with sturdy plastic buttons. The keys are connected to a matrix so you only need 7 microcontroller pins 3-columns and 4-rows to scan through the pad. There's a great Matrix Keypad Arduino library that should work great with this item with minor adjustments. It's basically a sturdier version of our Membrane 3x4 Matrix Keypad and comes with 7 or 8 header pins pre-soldered on for easy plugging. Starting from the left there are three column pins, and then to the right are the four row pins. If yours has an 8th pin, its not used and you can just leave it disconnected

Technical Details
o Force 160-180g o Contact Resistance o Weight 23g

There is a very nice Matrix Keypad Arduino library that works great with this item. The only thing we suggest is to change the initialization code in the examples to this:
#include "Arduino.h" #include "Keypad.h"
const byte ROWS = 4 //four rows const byte COLS = 3 //three columns char keys[ROWS][COLS] =
byte rowPins[ROWS] = 6, 7, //connect to the row pinouts of the keypad byte colPins[COLS] = 3, //connect to the column pinouts of the keypad

Keypad = Keypad makeKeymap keys , rowPins, colPins, ROWS, COLS ;
void Serial.begin 9600 ;
void char key = keypad.getKey ;
if key != Serial.println key ;

This will swap the * and # keys and also let you connect to the Arduino with all the pins in order/in a row starting from digital 2 thru digital 9

Engineered in NYC Adafruit

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1824

1824 Datasheet

Datasheet ID: 1824 507479