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  • VIDEO
  • DIYmalls 4x4 Matrix Membrane Keypad 16 Key Keyboard Module Array Switch for Arduino ESP32 Development Board
  • 4x4 Matrix Membrane KeypadDIYmalls

4x4 Matrix Membrane Keypad 16 Key Keyboard Module Array Switch for Arduino ESP32 Development Board

3.8 out of 5 stars (49)
To see product details, add this item to your cart. You can always remove it later.

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About this item

  • 4x4 keypad is widely used in Password security system, Wired remote controlled robot, Electronic voting machine, Generating external interrupt, Musical keypad etc.
  • You can use the regular 2.54mm jumper wire male to solder it with the 16 keys matrix keypad., like shown on image.
  • You don't need the outer two pins on the left and right for wiring. It's the inner 8 pins that matter.
  • If you solder on a header, we highly recommend laying down some flux on the pads first, inserting the header pins, then soldering.
  • If you have any problem, please click "DIYmalls"(you can find "Sold by DIYmalls" under Buy Now button), in the new page, click "Ask a question".
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Product Description

4x4 keypad

4x4 keypad is a combination of row and column circuits. The buttons themselves are simple switch.

There is 1 pin for each column and 1 pin for each row.

So for the 4x4 keypad, there are 4 + 4 = 8 total pins ( 2 pins of NC excluded). Each of these needs to be connected to a separate digital pin on the microcontroller.

keypad 4x4

How 4x4 Matrix Keypad Works ?

There is a switch connecting each row and column. So the combinations of rows and columns makes up the 16 inputs.

Initially all the switch are open (not connected). When you pressed either one buttons, the switch is now closed (connected). As you can see, now there is a connection between the row and column.

4x4 keypad module

For Automatic Gate Keypad Lock

This DIY project figures out a way to lock double-swing gate from both sides, securing the yard. The locking mechanism should stay unlocked, because we often leave the gate open when working all day in the yard.

keypad module 4x4

Keypad Access System

The most-requested use for a numeric keypad seems to be a “PIN” style application, where microcontroller is instructed to do something based on a correct number being entered into the keypad.

keypad module 16 keys

KeyPad-controlled Servo

The main objectives of this project are:

- Receive 3 inputs from a membrane keypad

- Write data from 3 inputs as a single number servo position to the servo

Keypad 4x4
4x4 Membrane Keypad
400 Breadboard
LoRa 32 V3
2.8" ESP32 Touchscreen
3.5" ESP32 Touchscreen
Buying Options
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Customer Reviews
3.8 out of 5 stars 49
4.3 out of 5 stars 53
4.5 out of 5 stars 11
4.1 out of 5 stars 143
4.6 out of 5 stars 185
3.8 out of 5 stars 73
Package List 1pcs 16keys keypad module 5pcs 16 keys membrane keypad 1 set breadboard+power module + cable 2 set 915 lora esp32 oled board 1 x ESP32-2432S028R 1 x ESP32-3248S035_C
1602 LCD
2004 LCD
1.44 TFT LCD
1.8 TFT LCD
2.4 TFT LCD
3.5" LCD
Buying Options
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Customer Reviews
4.4 out of 5 stars 39
4.4 out of 5 stars 39
4.3 out of 5 stars 43
3.8 out of 5 stars 26
3.9 out of 5 stars 18
4.1 out of 5 stars 28
Package List 2pcs 16x2 lcd 2pcs 20x4 display 2pcs 1.44 inch tft lcd 1pcs 1.8 inch tft lcd 1pcs 2.4 inch tft lcd 2pcs 20x4 display

Product information

Technical Details

Brand ‎DIYmalls
Manufacturer ‎DIYmalls
OS ‎Android
Compatible Devices ‎Arduino-compatible devices, PC
Special features ‎Specialized Design for Specific Applications
Mounting Hardware ‎1 x 16 Keys 4x4 Membrane Matrix Keypad
Power source type ‎Wired
Batteries included ‎No
Batteries Required ‎No
Keyboard Description ‎Standalone, Membrane
Connector Type ‎USB
Material Type ‎Plastic
Hand Orientation ‎Ambidextrous
Does it contain liquid? ‎No
Has an attached light ‎No
Manufacturer ‎DIYmalls
Product Dimensions ‎7 x 6 x 1 cm; 22.96 g
ASIN ‎B086ZGKDK9

Additional Information

Date First Available May 29 2020
Customer Reviews
3.8 out of 5 stars (49)

3.8 out of 5 stars
鶹 Rank

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DIYmalls 4x4 Matrix Membrane Keypad 16 Key Keyboard Module Array Switch for Arduino ESP32 Development Board

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Product details

  • Product Dimensions ‏ : ‎ 7 x 6 x 1 cm; 22.96 g
  • Manufacturer ‏ : ‎ DIYmalls
  • ASIN ‏ : ‎ B086ZGKDK9
  • Country/Region of origin ‏ : ‎ China
  • Customer Reviews:
    3.8 out of 5 stars (49)
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Product Summary: DIYmalls 4x4 Matrix Membrane Keypad 16 Key Keyboard Module Array Switch for Arduino ESP32 Development Board

From DIYmalls

3.8 out of 5 stars, 49 ratings

Customer reviews

Price

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About this Item

  • 4x4 keypad is widely used in Password security system, Wired remote controlled robot, Electronic voting machine, Generating external interrupt, Musical keypad etc.
  • You can use the regular 2.54mm jumper wire male to solder it with the 16 keys matrix keypad., like shown on image.
  • You don't need the outer two pins on the left and right for wiring. It's the inner 8 pins that matter.
  • If you solder on a header, we highly recommend laying down some flux on the pads first, inserting the header pins, then soldering.
  • If you have any problem, please click "DIYmalls"(you can find "Sold by DIYmalls" under Buy Now button), in the new page, click "Ask a question".

Product description

Description: -The Keypad library allows development board to read a matrix type keypad. 4×4 numeric keypads are widely used in project which requires the user to give command to the system or to feed in some data. - Keyboard for the pin interface.4X4 design, 10 numeric keys, 4 English keys,2 function keys. There is a switch connecting each row and column. So the combination of rows and columns makes up the 16 inputs. - Circuit board is PCB double-panel Package Included : 1 x 16 Keys 4x4 Membrane Matrix Keypad
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