|
|
| (3 intermediate revisions by the same user not shown) |
| Line 1: |
Line 1: |
| == SCH ==
| | https://w2.electrodragon.com/gollum/search?q=keypad-dat.md |
| <gallery>
| |
| File:Keypad_sch_01.png | Kaypad SCH 01
| |
| </gallery>
| |
| | |
| | |
| === Demo code ===
| |
| | |
| <syntaxhighlight lang="Arduino">
| |
| /* @file CustomKeypad.pde | |
| || @version 1.0
| |
| || @author Alexander Brevig
| |
| || @contact alexanderbrevig@gmail.com
| |
| ||
| |
| || @description
| |
| || | Demonstrates changing the keypad size and key values.
| |
| || #
| |
| */
| |
| #include <Keypad.h>
| |
| | |
| const byte ROWS = 4; //four rows
| |
| const byte COLS = 4; //four columns
| |
| //define the cymbols on the buttons of the keypads
| |
| char hexaKeys[ROWS][COLS] = {
| |
| {'0','1','2','3'},
| |
| {'4','5','6','7'},
| |
| {'8','9','A','B'},
| |
| {'C','D','E','F'}
| |
| };
| |
| byte rowPins[ROWS] = {7, 6, 5, 4}; //connect to the row pinouts of the keypad
| |
| byte colPins[COLS] = {11, 10, 9, 8}; //connect to the column pinouts of the keypad
| |
| | |
| //initialize an instance of class NewKeypad
| |
| Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
| |
| | |
| void setup(){
| |
| Serial.begin(9600);
| |
| }
| |
|
| |
| void loop(){
| |
| char customKey = customKeypad.getKey();
| |
|
| |
| if (customKey){
| |
| Serial.println(customKey);
| |
| }
| |
| }
| |
| | |
| </syntaxhighlight>
| |
| | |
| ====Updated Demo Code 2013-05-24 ====
| |
| We have tested with library on 4X4 keypad, but there is some thing need to change.Please follow the steps.<br />
| |
| * Download this [[:File:Keypad.zip|library]], and it's refer to this arduino page.
| |
| * Use the example called "custom keypad" in the menu
| |
| * switched the pins, pin 1 connect to the keypad will make one row or one column not work out. so let's change all the wirings from 1-4 and 5-7 to 5-7 and 8-11.
| |
| * Always try to avoid pin 1, in other keypad version.
| |
| | |
| | |
| === Pin Definitions ===
| |
| VCC Row 1, 2, 3, 4<br />
| |
| NC Column 1, 2, 3, 4<br />
| |
| <br />
| |
| Output high TTL signal when either row or column buttons are pressed.<br />
| |
| === Documents===
| |
| * [[:File:Key_header.zip|8051 key header file]].
| |
| [[category:input]]
| |