4X4 Matrix Membrane Keypad 16 Buttons

This 4X4 Matrix Membrane Keypad is a type of keypad that has 16 buttons arranged in a 4X4 grid. The buttons are connected to a matrix of rows and columns, so that only 8 microcontroller pins are needed to scan the entire keypad. This makes the 4X4 matrix keypad a very efficient way to input data into a microcontroller.

The buttons on a 4X4 matrix keypad typically labeled with numbers and symbols. The number keys are arranged in a telephone-style keypad, with the numbers 1-9 in the first row, 0 in the bottom row, and * and # in the top right and bottom right corners

The 4X4 Matrix Membrane Keypad is a versatile input device that can use in a variety of applications. The 4X4 matrix keypad is also a popular choice for Arduino projects. The input voltage for a 4X4 matrix keypad typically ranges from 3V to 5V DC.

The working principle of a Matrix Membrane Keypad is based on the fact that each button connected to a unique intersection of a row and a column. When a button is pressed, it closes the circuit between the row and column, which is detected by the microcontroller.

The microcontroller scans the keypad by activating one of the rows at a time. When a row is activated, the microcontroller then checks each of the columns to see if it is connected to a button. 

The Matrix Membrane Keypad is a very efficient way to input data into a microcontroller because it only requires 8 microcontroller pins to scan the entire keypad. This is because the rows and columns are multiplexed, which means that they are shared by multiple buttons.

Features : –

Here are some of the benefits of using a 4X4 Matrix Keyboard:

• Efficiency: A 4X4 matrix keypad only requires 8 microcontroller pins to scan the entire keypad. This is because the rows and columns are multiplexed, which means that they are shared by multiple buttons.
• Versatility: A 4X4 matrix keypad can use in a variety of applications.
• Cost-effectiveness: 4X4 matrix keypads are relatively inexpensive. This makes them a good option for budget-minded projects.
• Durability: 4X4 matrix keypads typically made of durable materials, such as plastic or metal. This makes them resistant to damage from wear and tear.

4X4 Matrix Membrane Keypad Specifications : –

The 4X4 MEMBRANE KEYPAD is also a popular choice for Arduino projects.

• Number of keys: 16
• Key size: 12.5mm x 12.5mm
• Key spacing: 5mm
• Keycap material: Plastic
• Keycap legends: Printed or laser-etched
• Key matrix: 4×4
• Operating voltage: 3V to 5V
• Current draw: 10mA
• Contact resistance: 100 ohms
• Dielectric strength: 250 VRMS

4X4 Matrix Membrane Keypad Applications : –

4X4 Matrix Membrane KeypadS  are a versatile input device that can use in a variety of applications. Here are some of the most common applications for 4X4 matrix keypads:

• Calculators: 4X4 Matrix Membrane Keypads are commonly used in calculators to input numbers and symbols.
• Microcontrollers: 4X4 Matrix Membrane Keypads are a popular choice for interfacing with microcontrollers. They are easy to use and can use to input a variety of data.
• Security systems: 4X4 Matrix Membrane Keypads often use in security systems to enter PIN codes.
• Voting machines: 4X4 Matrix Membrane Keypads are used in voting machines to select candidates and options.
• Machine control: 4X4 Matrix Membrane Keypads can use to control machines, such as CNC machines and robots.
• Gaming:4X4 Matrix Membrane Keypads sometimes use in gaming applications, such as arcade games and video games.

4X4 Matrix Membrane Keypad Pin Description : –

The pin description of a 4X4 Matrix Keypad Module typically consists of 8 pins, 4 for the columns and 4 for the rows. The columns typically labeled as C1, C2, C3, and C4, and the rows typically labeled as R1, R2, R3, and R4.

Here is a table that shows the pin description of a 4X4 Matrix Keypad Module

Package : –

1 x 4X4 Matrix Membrane Keypad

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