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Pakiet filamentów Devil Design - czarno-biały PLA Duo - 2szt.

Index: DEV-27746

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Two Trees TTC-450 Pro CNC milling machine

Index: TRS-27245

Adapter 4in1 Hub USB Type-C - 4x USB Type-A 3.0 - black - Baseus Lite Series 4-Port

Index: INN-27396

0,4mm Micro Swiss nozzle for Elegoo Neptune 4 Plus/4 Max 3D printers - 1,75 mm filament...

Index: MIS-27190

Korad KA3010DS laboratory power supply unit 0-30V 10A

Index: KOR-25067

reComputer Super J4011 - Nvidia Jetson Orin NX - 8GB RAM - Seeedstudio 114110313

Index: SEE-27338

Korad KA3010PS 30V 10A USB RS232 laboratory power supply

Index: KOR-25068

Limit switch 50mm - Pololu 1403

Index: PLL-00017

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RP2040 HAT Expansion - Raspberry Pi GPIO Expansion - Pi HAT and Pico HAT - SB...

Index: SBC-22937

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Original Prusa MINI Enclosure - 3D printer enclosure with filtration system

Index: PSA-26875

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Filament PLA Tough 1,75mm 1kg - Polar White

Index: SCP-21764

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Soldering station WEP 939D+ - 75W

Index: LUT-08057

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Graphite smoked plexiglass - 3mm - 200x200mm - 5pcs

Index: MSL-22774

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Feather nRF52 Bluefruit LE - compatible with Arduino - Adafruit 3406

Index: ADA-11667

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Female header 1x10 2mm SMD - XBee raster - SparkFun PRT-10030

Index: SPF-03396

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Hex keys 2-10mm - Vorel 56380 - 8pcs.

Index: NSZ-06384

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Filament Polymaker Panchroma Gradient PLA 1,75mm 1kg - Pastel Rainbow

Index: PLM-23981

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Intelligent PIR motion and light intensity sensor LoRaWAN - Milesight WS202

Index: STV-27006

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Filament Polymaker PolyLite PLA Pro 1,75mm 1kg - Blue

Index: PLM-25210

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6 pin 2mm 20A / 300V electric cube

Index: LEC-09988

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Keyboards

HID devices (Human Interface Devices) are nowadays used every day by everyone to interact with digital technology. This is perhaps the most popular category of peripherals electronic devices. This group includes devices such as a TV remote control, game console controller, computer mouse or keyboard.

In addition to PCs, keyboards are also used in many other devices. A perfect example will be ATMs, cash registers, landline telephones, door stations, control and automation devices and many more. Of course, the computer keyboards themselves are different from each other. We can distinguish, for example, classic keyboards for desktop computers (wireless keyboards, wired keyboards), laptop keyboards, keyboards attached to a TV, game console, smartphone, as well as professional gaming or specialized keyboards.

In this category, you can choose from dozens of different keyboards. All products are characterized by attractive prices and the highest quality of workmanship. The Botland store offers a wide selection of small keyboards at an affordable price, allowing you to build a simple control interface for your project.

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Numeric keyboards (3)

Membrane keyboards (14)

Keyboards for Arduino (27)

4x4 keyboards (4)

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Products: 29

Self-adhesive membrane keypad - 1 "SOS" key

Membrane keyboard has one button labeled "SOS". On its back is the tape to facilitate mounting.

5.0 (3)

Index: MOD-09914

Index: MOD-09914

Keyboard panel 2x2 - compatible with LEDs - SparkFun COM-07836

Overlay for the keyboard with 2x2 - 4 keys. Under each button, you can mount the LED in the through hole case of 3 or 5 mm. It allows you to create panel of keys with the...

Index: SPF-02273

Index: SPF-02273

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SPECIAL OFFERS

Membrane Switch Keypad 1 Key - red

Membrane keypad with one red key . The keyboard is equipped with a 90 mm long connection tape, the tape itself is finished with a female connector with a raster 2.54 mm...

4.9 (11)

Index: DNG-16991

Index: DNG-16991

Membrane keypad - 1 green key - self-adhesive

Keyboard with single round key in green. Dimensions of the module itself are 23 x 20 mm . The keypad's outlines are made in the form of a 90 mm long tape with a 2-pin...

4.8 (5)

Index: DNG-16992

Index: DNG-16992

Panel for 4x4 keyboard - compatible with LED diodes - SparkFun COM-07835

Keyboard overlay with 4x4 - 16 keys. Under each key, an LED can be mounted in a 3 or 5 mm threaded housing. This allows you to create a backlit key panel.

Index: SPF-02272

Index: SPF-02272

Sale
SPECIAL OFFERS

Membrane keypad - 1 yellow key - self-adhesive

A membrane keypad with one key in yellow equipped with adhesive tape. To connect the keyboard to the main module, a tape ended with a 2-pin female connector is used, which...

4.8 (5)

Index: DNG-16989

Index: DNG-16989

Keyboard - 2x4 tact switch matrix - Waveshare 3678

The matrix consists of 8 buttons, type tact switch, distributed in four rows and two columns. The signals are displayed out on the 9 popular goldpin connectors - pitch of 2.54...

5.0 (1)

Index: WSR-04499

Index: WSR-04499

Membrane keypad - 1 grey key - self-adhesive

The keyboard is equipped with a single round key in grey . On the back there is a layer of adhesive tape. Equipped with 94 mm long tape with a 2-pin plug with a 2.54 mm...

5.0 (4)

Index: DNG-17118

Index: DNG-17118

Touchpad TTP229 - 16 buttons

Module of the touch keyboard with 16 keys, it has TTP229 syste, it communicates through a digital interface. Supply voltage is from 2.4 V to 5.5 V.

5.0 (2)

Index: GRL-12499

Index: GRL-12499

Membrane keypad - 2 coloured buttons - self-adhesive

Keyboard equipped with two colored buttons. Keyboard leads are made in the form of a connection tape finished with 3-pin raster 2.54 mm . Plug located at the end of the...

5.0 (5)

Index: DNG-16993

Index: DNG-16993

ADKeyboard v3 - keyboard module with colorful buttons

Keyboard module equipped with five colorful buttons . It communicates via analog signal, which saves I/O pins of e.g. Arduino module. Device works with 5V.

Index: DFR-03560

Index: DFR-03560

Numeric keypad, self-adhesive, 12 keys

Simple numeric keyboard with the numbers from 0 to 9 and the signs: * and #. The reverse side has a self-adhesive tape for facilitating the installation.

5.0 (5)

Index: MOD-01681

Index: MOD-01681

Self-adhesive membrane numeric keypad - 4 keys

Numeric self-adhesive membrane keypad - 4 keys

Simple numeric keypad with numbers: 1 to 4. Self-adhesive tape on the back for easy installation.

4.0 (2)

Index: MOD-04266

Index: MOD-04266

Numeric keyboard - 12 keys

The keyboard has numbers from 0 to 9 and the signs: * and #. The buttons are connected into a matrix so for the detection of 12 buttons, you need only 7 pins of the...

5.0 (4)

Index: SPF-02202

Index: SPF-02202

Membrane Switch Keypad 4 Key red/yellow/yellow/green

Membrane keypad - 4 coloured keys - self-adhesive

Furniture keyboard with 4 coloured buttons, to connect the keyboard a tape ended with a 5-pin female connector is used. Raster of the connector leads is 2.54 mm . The...

4.5 (2)

Index: DNG-16996

Index: DNG-16996

Membrane keypad - 2 coloured buttons with arrows - self-adhesive

Diaphragm keypad with two buttons in red and yellow, additionally there are arrows on the buttons up and down . Thanks to the navigation arrows, the keyboard is perfect as...

4.9 (23)

Index: DNG-16994

Index: DNG-16994

Membrane 4x5 keypad - 20 keys - self-adhesive

A small membrane keypad with 20 keys in a 4 x 5 layout. The keys on the keypad are numbers: from 0 to 9 , two function keys F1 and F2 , special characters: * and # ,...

4.8 (3)

Index: DNG-16997

Index: DNG-16997

Tact Switch module 6x6

Module with button, type tact switch, size of 17 x 10mm with two holes with a diameter of 2.3 mm.

5.0 (1)

Index: MOD-02645

Index: MOD-02645

Membrane keypad - 3 coloured buttons - self-adhesive

Equipped with 3 colour membrane keypad buttons . Simple input device allowing to control projects e.g. based on Arduino or STM32. Keyboard leads are made in the form of 90 mm...

4.7 (3)

Index: DNG-16995

Index: DNG-16995

Membrane keypad - 1 blue key - self-adhesive

The keyboard with one key in blue has been equipped with a self-adhesive tape which allows to place the keyboard on any surface and in any place. The connectors of the...

5.0 (10)

Index: DNG-16988

Index: DNG-16988

Self-adhesive membrane keypad 4x4 - 16 keys

Self-adhesive membrane keyboard 4x4 - 16 keys

Diaphragm keypad equipped with 16 keys in 4 x 4 arrangement . It has numbers: from 0 to 9, letters: A, B, C, D and special characters: * i #. On the back of the keyboard there...

4.9 (12)

Index: DNG-17119

Index: DNG-17119

16 x tact switch keyboard

The matrix consists of 16 tact switch buttons spread out in four rows and four columns. Signals are output on 8 popular goldpin connectors - 2.54 mm raster.

4.9 (7)

Index: MOD-02895

Index: MOD-02895

Fermion - ADKey Board - 10 button tact switch array - DFRobot DFR0792

A board in the form of a matrix keyboard manufactured by DFRobot. It has 10 tact switch buttons . The matrix can be used to control DFRPlayer Pro or DFPlayerMini. It is easy...

5.0 (3)

Index: DFR-19550

Index: DFR-19550

NeoTrellis RGB Driver PCB - 4x4 keyboard with backlit keys - Adafruit 3954

NeoTrellis RGB Driver PCB keyboard with 16 buttons arranged in 4 columns by 4 rows. Each button is illuminated with a separate RGB LED, so the keys can glow in different...

Index: ADA-21015

Index: ADA-21015

How do keyboards work?

The buttons placed on a typical membrane keyboard are arranged in the form of columns and rows. For example, a 3X4 keyboard has three columns and three rows, and a 4X4 keyboard has four rows and four columns. There is a membrane button between each key. Each button in a row is connected to switches in other rows via a signal conducting path. Each button in a column is connected in the same way - unilaterally to other switches in the same column via a conductive path. There is a separate pin for transmitting control signals for each row and each column, which means that for a 4X4 keyboard, 8 pins will be needed. Pressing the key closes the circuit between the row and the column and causes control current to flow between the appropriate pins for the row and column.

Keyboards ideal for working with embedded systems

Keyboards allow the user to enter input while the program is executing a set of instructions and commands. The Botland store also offers keyboard modules compatible with Arduino, and an appropriate Keypad library has also been designed for this purpose. The keyboard is often used as an input device for Arduino, and membrane models are an affordable solution for many applications - they are thin and easy to install in many devices.

Matrix keyboards - Botland - Shop for roboticists

Our store's assortment includes various types of keyboards. Individual models are characterized by a different number, size and type of keys. We offer both self-adhesive membrane keyboards in various variants and numerical models (with markings on the keys). The most common layouts are 4x4, 3x4, 2x2 and 2x4. Matrix keyboards with 1, 2, 3 and 4 buttons are also available. Additionally, in this section you can find keyboards for Arduino and other systems. All models have clearly marked pins. In practice, this means that correct connection should not be a problem.

Matrix keyboards - FAQ

How does a matrix keyboard work?

A matrix keyboard has buttons grouped into columns and rows, which allows you to control more buttons with fewer lines of data.

How is a matrix keyboard constructed?

A matrix keyboard is composed of buttons arranged in rows and columns. Matrix keyboards include, for example , numeric keypads .

What is a membrane keyboard?

A membrane keyboard is a type of keyboard in which pressing a key brings a layer of special foil into contact with an electrical circuit printed on the layer below, which generates an electrical signal. You can learn more in our article about membrane and mechanical keyboards .

How to connect a keyboard to Arduino?

The method of connecting the keyboard to Arduino depends, among other things, on the parameters of the selected model. You can find more information about connecting various extensions to Arduino on our blog .