4×4 Matrix 16 Keypad Keyboard Module 16 Button MCU

(1 customer review)
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SKU: 420106
  1. 4×4 Matrix Keyboard Module with 16 buttons
  2. Small in size and hence Save space
  3. More convenient to use
  4. Expanded development application modules for single chip
  5. With 16 keys and 8 pin

 49.00

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Brand: Generic
Category: Electronic Switches/Keypads Modules

The 4 x 4 matrix keypad usually is used as input in a project. It has 16 keys in total, which means the same input values. The 4 x 4 Matrix Keypad Module is a non-encoded matrix keypad consisting of 16 keys in parallel. The keys of each row and column are connected through the pins outside – pin R1-R4 as labeled beside control the rows, when L1-L4, the columns.

A 4×4 matrix keypad consisting of microswitch buttons. The module has four holes 3mm (M3) holes for mounting. The pin designations on each PCB are shown on each PCB. Four pins are thus used as an ‘x’ coordinate and the other 4 as a ‘y’ coordinate.
The module is already equipped with a soldered pin-headers.

How it Works:

First test whether any key is pressed down. Connect power to rows, so they are High level. Then set all the rows R1-R4 as Low and then detect the status of the columns. Any column of Low indicates there is key pressing and that the key is among the 4 keys of the column. If all columns are High, it means no key is pressed down. Next, locate the key. Since the column in which the pressed key lies is identified, knowing the line would finalize the testing. Thus, set the rows as Low in turns until any is unveiled accordingly – other rows will still be High.
Now the row can be identified. Detect the status of each column in turns. The column tested Low is the one intersecting with the line – their cross point is just the key pressed.


Features:

  1. 4×4 Matrix Keyboard Module with 16 buttons
  2. Small in size and hence Save space
  3. More convenient to use
  4. Expanded development application modules for single chip
  5. With 16 keys and 8 pin

Package Includes:

1 x 4×4 Matrix 16 Keypad Keyboard Module 16 Button MCU

SKU: 420106 Category:
Switch Type

Momentary

Pin Spacing (mm)

2.54

Length (mm):

42

Width (mm):

39

Height (mm):

11

Weight (g):

9

Shipping Weight 0.014 kg
Shipping Dimensions 8 × 6 × 4 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.


What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 1 review

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  1. simsid66 (verified owner)

    I loved the idea of a decent pushbutton module, and the product itself is great and works perfectly. However, I’d love if there was a version without headers pre-soldered, because it was a huge pain to desolder the headers that came with it and solder on some downwards-facing ones. I’d much prefer if the headers came separately, because it is impossible to breadboard this or mount it on a PCB as it stands now.

    simsid66

Questions and answers of the customers

    Does it work with esp8266 or esp32 to make a progr... Read more
  1. 0 votes
    Q Does it work with esp8266 or esp32 to make a programmable macro pad? answer now
    Asked by arorasakshamra84 on January 27, 2024 9:09 am
    A

    Yes, it works with esp8266 0r esp32

  2. Hello, does the switch release its state when we p... Read more
  3. 0 votes
    Q Hello, does the switch release its state when we pull the finger off of it or does it stay presse...... Read more answer now
    Asked by rakesh.vanam001 on March 18, 2023 10:06 pm
    A

    It's a Momentary type of switch which means it ... Read more

  4. Does it have debouncing inbuilt?
  5. 0 votes
    Q Does it have debouncing inbuilt? answer now
    Asked by jashmota720 on December 17, 2021 4:29 pm
    A

    Hello,

    Yes, Debouncing inbuilt.

    B... Read more

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Country Of Origin: China