

The module has 12 push buttons. You can make usual keypads for enter numbers, symbols, or navigate and selections in the program. There are pull-up resistors of different values for each button. This makes it possible to connect all the 12 keys to taking only one analog port of the microcontroller. The button consists of two parts: a cap, which can be applied to any character, and a transparent cover which can prevent blurring of the text and add light. RoboticsBD
After connecting power to the module and pressing at least one key contact at "OUT" will stress the appropriate level. Conformity stresses the buttons pressed, you can find out how on the board and in the table below (values are valid out when powered from 5v). Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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General Specification | |
Material | Plastic |
Color | Blue |
Key Type | 3×4 |
Mounting Hole Diameter | 2 mm |
Mounting Hole Center Distance | 60mm x 60mm |
Pad Size (mm) LxWxH | 64x50x10 |
Weight (gm) | 18 |
Shipment Weight | 0.02 kg |
Shipment Dimensions | 8 × 6 × 2 cm |
Please allow 5% measuring deviation due to manual measurement.
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1 x Button Keypad 3x4 module (Assembled)
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The latest price of Button Keypad 3x4 module (Assembled) in Bangladesh is BDT 699 You can buy the Button Keypad 3x4 module (Assembled) at best price from our RoboticsBD or visit RoboticsBD Office.
Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. |
Product Images are shown for illustrative purposes only and may differ from the actual product. |
Reference: RBD-0094
The Arduino Uno R3 High-Quality Edition Arduino UNO in Bangladesh Micro-controller : ATmega328. Operating Voltage : 5V. Input Voltage (recommended) : 7-12V. Digital I/O Pins : 14 (of which 6 provide PWM output). Analog Input Pins : 6. The Arduino Uno R3 High-Quality Edition embodies superior craftsmanship and meticulous attention to detail, resulting in...
Reference: RBD-0159
Provides a user-friendly interface that allows users to go through the menu, make selections etc. It consists of a 1602 white character blue backlight LCD. The keypad consists of 6 keys select, up, right, down, left and reset. To save the digital IO pins, the keypad interface only uses one ADC channel. The key value is read out through a 5 stage voltage...
Reference: RBD-0402
Ultra-thin design & adhesive backing provides easy integration to any project Excellent price-performance ratio Easy communication with any microcontroller 5 pins 2.54mm pitch connector, 4x 4type 16 keys. Sticker can peel off for adhesive mounting. RoboticsBD Operating Voltage (V): 12 DC
Reference: RBD-0986
Ultra-thin design & adhesive backing provides easy integration to any project. Excellent price-performance ratio. Easy communication with any microcontroller 5 pins 2.54mm pitch connector, 4x 4type 16 keys. Sticker can peel off for adhesive mounting.
Reference: RBD-1333
Easy communication with any microcontroller. Tactile type switches. Over 1,000,000 operations per key. Contact rated for 12V dc @ 20mA. Over 1,000,000 operations per key. Dimensions: 56 x 80 x 17 mm.(LxWxH)
Reference: RBD-0270
AD/DA IO interface : screw terminal 1-WIRE interface : for connecting 1-WIRE devices like DS18B20 Sensor interface : for connecting various sensors 0.96inch OLED : SSD1306 driver, 128×64 resolution, SPI interface Buzzer CP2102 : USB TO UART converter PCF8591 : 8-bit AD/DA converter, I2C interface
Reference: RBD-2239
Wearable e-textile technology. Designed with large sew tabs LED Red Color
Reference: RBD-1916
IC Chip: MAX3232 Operating Voltage: 3.3-5.5V It can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU Pre-assembled compact size board Suitable for use with most microcontrollers Operates up to 250 kbit/s
Reference: RBD-2228
Working voltage: 2.3V-5.5V. Working temperature range: -40 ~ + 105. Onboard 25MHZ (accuracy of 50ppm) active crystal. On-board high-speed amplifiers
Reference: RBD-0552
Working frequency: quad-band network, 850 / 900 / 1800 / 1900MHz Working voltage: 4.8-9VDC(On-board voltage regulator circuit supply power for A6 module) Working Current: maximum of 2A. RoboticsBD
Reference: RBD-2220
Good PRINT PACK design, very beautiful. 8 world of the three primary colors (red-green-blue) LED color, scanning control mode. Applicable for various platforms, such as 51 / AVR / AVR / ARM / for Arduino All kinds of platforms.
Reference: RBD-1137
Fully Compatible with 10/100/1000Base-T Networks Integrated MAC and 10Base-T PHY Supports One 10Base-T Port with Automatic Polarity Detection and Correction Supports Full and Half-Duplex modes Programmable Automatic Retransmit on Collision Programmable Automatic Rejection of Erroneous Packets SPI Interface with Clock Speeds Up to 20 MHz For Arduino, SPI,...
Reference: RBD-0576
Chipboard STM32F103C8T6 On board, SWIM interface and reset button Micro USB line or the 2.54 pin to link to the power with the input voltage 4.5V-15V. Power light and the Demo indicator light Leads all the pins and has detailed label for the Pins. Support SWIM debug mode. RoboticsBD
Reference: RBD-1871
5V single power supply. Wave frequency adjustable 0-400Hz adjustable frequency pure sine wave. Unipolar and bipolar modulation mode. External 12MHz crystal oscillator. PWM carrier frequency 23.4KHz. Voltage, current, temperature feedback real-time processing. Overvoltage, Undervoltage, overcurrent, overheating protection function. Pin set soft-start mode...
Reference: RBD-2219
ESP32-IO shield Compatible with RoboticsBD ESP32 Core board Brings out all the pins of RoboticsBD ESP32 Core board 2 rows of 2.54mm pin headers for connecting other sensors Power supply circuit for RoboticsBD ESP32 Core board DC 7-12V voltage input DIP switch for controlling the power
Reference: RBD-1037
Quad-band 850/900/1800/1900MHz Inner MT3337 GPS receiver, -165dBm precision, control on a same serial port. Earphone/ microphone outputs on a card or external 32-ohm speaker + supports voice calls with an electret microphone. Sending and receiving SMS.
Reference: RBD-0323
Microcontroller ATmega328 (SMD) – Interface CH340G Operating Voltage: 5V Input Voltage (recommended): 7-12V Digital I / O Pins 14 (of which 6 provide PWM output) RoboticsBD Analog Input Pins: 6 A programming cable is included.
Reference: RBD-2095
Detection distance: 2-40cm IO Interface: 4-wire interfaces (- / + / S / EN) Output signal: TTL level Adjustment: adjust multi-turn resistance Effective angle: 35 ° **Please be advised that the majority of our customers have left negative reviews for this product. We recommend that you do not make a purchase unless you are absolutely certain that you can...
Reference: RBD-1217
Nextion is a seamless Human Machine Interface (HMI) solution. Nextion provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to Internet of thing (IoT) or consumer electronics field.
Reference: RBD-2078
No direction, any angle can trigger the work. Sensitivity switches can be selected for the trigger sensitivity according to circuit requirements. This switch is suitable for the trigger of the small current circuit. Component Type: SW-18015P Maximum voltage: 12V Rated Heating Current: 20mA
Reference: RBD-2218
Module package (with FLASH memory and peripheral circuits) have DIP16, DIP28, chip packaging has DIP18, SSOP20, and LQFP32 form. Built 13Bit/DA converter, and 12Bit/PWM output. PWM output can directly drive 0.5W/8Ω speakers, push-pull current abundant support DAC / PWM output of two ways. Support for loading WAV audio formats. USB download mode, support...
Reference: RBD-1762
Input voltage(V): 9-12 It can produce high-temperature PCB board size(cm): 3.1 x 4 It is convenient for fans to install high efficiency Weight(g): 20This product is shipped as unassembled and requires soldering to be completed. You will need to do the soldering yourself.
Reference: RBD-2084
Power supply: 3 – 5V Good sensitivity The output format: Digital switching output (0 and 1) The comparator output signal is clean, good waveform, driving ability, more than 15mA. A fixed bolt holes for easy installation. Using a wide voltage LM393 comparator.
Reference: RBD-1867
Original TDA7297 core technology Easy Plug and Play Operation Dynamic operating Voltage Range: 8 to 16V High fidelity Dual 15W output.
Reference: RBD-1367
RGB trichromatic limiting resistor to prevent burnout PWM adjusted color mixing Working voltage: 5V LED drive mode: Common cathode driver
Reference: RBD-1417
SMD-MAX7219-MODULE A single module can drive an 8 * 8 common cathode lattice Module Operating voltage: 5V. Module with input and output interfaces Supports multiple modules cascade Led color: Red
Reference: RBD-0337
Brand: Waveshare
Detection depth: 48mm Power: 2.0V ~ 5.0V Dimension: 19.0mm * 63.0mm Mounting holes size: 2.0mm
Reference: RBD-1408
Type: CJMCU MINI USB AMS1117 MINI USB interface input 5V MINI USB outputs 5V and 3.3V DC power socket interface input 5V – 12V. DC power outlet output (5V label) 5V and 3.3V Weight: 2 gm.
Reference: RBD-2207
2 sine wave and 2 square wave output. AD9850: 0-40MHz. After the 20-30MHz frequency harmonics increases, the waveform will be less and less clean. Low-pass filter with 70MHz, so the waveform better than SN. Parallel and serial data input can be selected via a jumper.
Reference: RBD-2216
Module chip using PCF8951 Module supports external voltage input of the 4-way acquisition (voltage input range of 0-5v) The module integrated photoresistor by AD collection precise value of the ambient light intensity Module integrated thermistor by the precise value of the ambient temperature of the AD acquisition Module integrated 1 channel 0-5V voltage...
Reference: RBD-1808
Model: F407VE-512K STM32F407VET6 development board F407 microcontroller learning board STM32 system board
Reference: RBD-0389
Adopt imported controller PL2303HX, which can stabilize the flash with high speed 500mA self-recovery fuse for protection Two data transmission indicator can monitor data transfer status in real time Reserve 3.3V and 5V pin interface, easy for the DDWRT of different voltage system that needs power The entire board is coated by the high quality transparent...
Reference: RBD-0990
Support any Chinese text, English text synthesis, and support for English mixed Support voice codec function, the user can use the chip for direct recording and playback Support speech recognition function, can support the recognition of 30 command words.
Reference: RBD-1337
Transmission Distance(m) :400 Relay Channel:2 Trigger Voltage (VDC): 5 Switching Voltage (VAC):250@10A Switching Voltage (VDC):30@10A Baud Rate:9600 Note: Relay might be different from the picture as per stock
Reference: RBD-0438
ENC28J60 Ethernet Module HanRun HR911105A Ethernet port 5V supply voltage 100% Genuine ENC28J60 Chipset, compatible with Arduino etc. 25MHz Crystal. Standard HanRun HR911105A Ethernet Interface. RoboticsBD