Home

Filter By

Availability

Availability

Selections

Selections

Price

Price

  • BDT 2.00 - BDT 49,599.00

Categories

Categories

Jumper Wire Type

Jumper Wire Type

Brand

Brand

Weight

Weight

  • 0 kg - 13,200 kg

Resistor Pack of 5

Resistor Pack of 5

  • Banner

Active filters
  • Categories: Arduino Shield & Module
  • Categories: Back in Stock
  • Categories: Components
  • Categories: HMI
  • Categories: Instruments
  • Categories: Mini Computer/ PC
LED - SMD RGB HL5011 Quick view

Reference: RBD-0121

LED - SMD RGB HL5011 (Pack of 5)

(0)
BDT 10.00
BDT 10.00 tax incl.
BDT 10.00 tax excl.
BDT 10.00 tax excl.
BDT 10.00 tax incl.
BDT 10.00 tax incl.
BDT 0.00 Tax
BDT 10.00 tax excl.
BDT 10.00 tax excl.
BDT 0.00 Tax
BDT 10.00 tax incl.
More
In-Stock
In stock: 1442
Out-of-Stock Tuya 7in1 WiFi Air Quality Monitor PM2.5 CO2 TVOC HCHO AQI Robotics Bangladesh Quick view

Reference: RBD-2550

Tuya 7in1 WiFi Air Quality Monitor PM2.5 CO2 TVOC HCHO AQI

(0)
This multi-functional air quality monitor offers simultaneous testing for PM2.5, CO2, TVOC, HCHO, AQI, temperature, and humidity. Featuring a 2.8-inch TFT color display, it provides clear and easy-to-read detection data. Additionally, the monitor can be connected to the Tuya App for real-time air quality monitoring and historical data trend analysis...
BDT 6,450.00
BDT 6,450.00 tax incl.
BDT 6,450.00 tax excl.
BDT 6,450.00 tax excl.
BDT 6,450.00 tax incl.
BDT 6,450.00 tax incl.
BDT 0.00 Tax
BDT 6,450.00 tax excl.
BDT 6,450.00 tax excl.
BDT 0.00 Tax
BDT 6,450.00 tax incl.
More
Out-of-Stock
In stock: 0
Orange Pi 5 4G with 5V 4A Adapter Robotics Bangladesh Quick view

Reference: RBD-2376

Orange Pi 5 4G with 5V 4A Adapter

(0)
Rockchip RK3588S 8-core 64-bit processor Quad-core A76 + quad-core A55 architecture ARM Mali-G610 GPU with 3D/2D image acceleration Built-in NPU with 6Tops computing power 4GB LPDDR4 RAM Up to 8K display processing capability
BDT 17,990.00
BDT 17,990.00 tax incl.
BDT 17,990.00 tax excl.
BDT 17,990.00 tax excl.
BDT 17,990.00 tax incl.
BDT 17,990.00 tax incl.
BDT 0.00 Tax
BDT 17,990.00 tax excl.
BDT 17,990.00 tax excl.
BDT 0.00 Tax
BDT 17,990.00 tax incl.
More
Last items in stock
In stock: 3
On sale! Out-of-Stock 9 Degrees of Freedom Breakout- MPU-9150 Quick view

Reference: RBD-0334

9 Degrees of Freedom Breakout- MPU9150

(0)
The 9DOF MPU-9150 is the world’s first 9-axis MotionTracking MEMS device designed for the low power, low cost, and high performance requirements of consumer electronics equipment including smartphones, tablets and wearable sensors. And guess what? You get to play with it.
BDT 2,000.00
BDT 2,000.00 tax incl.
BDT 2,000.00 tax excl.
BDT 2,000.00 tax excl.
BDT 2,000.00 tax incl.
BDT 2,000.00 tax incl.
BDT 0.00 Tax
BDT 2,000.00 tax excl.
BDT 2,000.00 tax excl.
BDT 0.00 Tax
BDT 2,000.00 tax incl.
More
Out-of-Stock
In stock: 0
K Type Thermocouple Sensor Probe for Temperature Controller Quick view

Reference: RBD-0319

K Type Thermocouple Sensor Probe for Temperature Controller

(0)
Type K Type.  Mounting thread: M6  Temperature Range:0-600°C. RoboticsBD
BDT 300.00
BDT 300.00 tax incl.
BDT 300.00 tax excl.
BDT 300.00 tax excl.
BDT 300.00 tax incl.
BDT 300.00 tax incl.
BDT 0.00 Tax
BDT 300.00 tax excl.
BDT 300.00 tax excl.
BDT 0.00 Tax
BDT 300.00 tax incl.
More
In-Stock
In stock: 113
25mW Infrared Line Laser Light Robotics Bangladesh Quick view

Reference: RBD-0195

Brand: RoboticsBD

25mW Infrared Line Laser Light

(0)
25mW Infrared Line Laser Light
BDT 850.00
BDT 850.00 tax incl.
BDT 850.00 tax excl.
BDT 850.00 tax excl.
BDT 850.00 tax incl.
BDT 850.00 tax incl.
BDT 0.00 Tax
BDT 850.00 tax excl.
BDT 850.00 tax excl.
BDT 0.00 Tax
BDT 850.00 tax incl.
More
In-stock
In stock: 22
Orange Pi 4 LTS 4GB Complete Set Robotics Bangladesh Quick view

Reference: RBD-2375

Orange Pi 4 LTS 4GB Complete Set

(0)
Rockchip RK3399(28nm HKMG Process) 6-core ARMR64-bit processor 4GB LPDDR4 SDRAM, 16GB EMMC Flash HDMI output, 26-pin headers, LCD connector, 2USB 2.0, 1USB 3.0, 1*USB 3.0 TYPE-C, mini PCIE connector, etc. Support for dual cameras, binocular vision ranging, power management, TF card storage, SATA and SSD expansion, LED indicator Low-level peripherals...
BDT 15,990.00
BDT 15,990.00 tax incl.
BDT 15,990.00 tax excl.
BDT 15,990.00 tax excl.
BDT 15,990.00 tax incl.
BDT 15,990.00 tax incl.
BDT 0.00 Tax
BDT 15,990.00 tax excl.
BDT 15,990.00 tax excl.
BDT 0.00 Tax
BDT 15,990.00 tax incl.
More
In-Stock
In stock: 5
A2212 1400KV Brushless Outrunner BLDC Motor Robotics Bangladesh Quick view

Reference: RBD-1542

A2212 1400KV Brushless Outrunner BLDC Motor

(0)
Model: A2212/10T Motor KV: 1400 Max. Efficiency Current: 6-12A No Load Current: 0.7A @10V Current Capacity: 16A/60S LiPO Batteries: 2S-3S
BDT 850.00
BDT 850.00 tax incl.
BDT 850.00 tax excl.
BDT 850.00 tax excl.
BDT 850.00 tax incl.
BDT 850.00 tax incl.
BDT 0.00 Tax
BDT 850.00 tax excl.
BDT 850.00 tax excl.
BDT 0.00 Tax
BDT 850.00 tax incl.
More
In-Stock
In stock: 37
ADS1115 16-Bit ADC- 4 Channel with Programmable Gain Amplifier Robotics Bangladesh Quick view

Reference: RBD-0383

ADS1115 16-Bit ADC- 4 Channel with Programmable Gain Amplifier

(0)
Wide Supply Range: 2.0v To 5.5v Low Current Consumption Continuous Mode: Only 150µa Single-shot Auto Shut-down Programmable Data Rate: 8SPS to 860SPS It has Internal low-drift voltage reference
BDT 410.00
BDT 410.00 tax incl.
BDT 410.00 tax excl.
BDT 410.00 tax excl.
BDT 410.00 tax incl.
BDT 410.00 tax incl.
BDT 0.00 Tax
BDT 410.00 tax excl.
BDT 410.00 tax excl.
BDT 0.00 Tax
BDT 410.00 tax incl.
More
In-Stock
In stock: 25
Liquid Level Sensor for Arduino (WaveShare) Robotics Bangladesh Quick view

Reference: RBD-0337

Brand: Waveshare

Liquid Level Sensor for Arduino (WaveShare)

(0)
Detection depth: 48mm Power: 2.0V ~ 5.0V Dimension: 19.0mm * 63.0mm Mounting holes size: 2.0mm
BDT 499.00
BDT 499.00 tax incl.
BDT 499.00 tax excl.
BDT 499.00 tax excl.
BDT 499.00 tax incl.
BDT 499.00 tax incl.
BDT 0.00 Tax
BDT 499.00 tax excl.
BDT 499.00 tax excl.
BDT 0.00 Tax
BDT 499.00 tax incl.
More
In-Stock
In stock: 9
Out-of-Stock Off-Road Wheels - 130x60mm (Pair) Robotics Bangladesh Quick view

Reference: RBD-0208

Off-Road Wheels - 130x60mm (Pair)

(0)
"Take on any terrain with our burly off-road wheels." "Get the grip and stability you need with our deep-treaded tires." "Easy-to-mount and built to last - our off-road wheels won't let you down."
BDT 1,450.00
BDT 1,450.00 tax incl.
BDT 1,450.00 tax excl.
BDT 1,450.00 tax excl.
BDT 1,450.00 tax incl.
BDT 1,450.00 tax incl.
BDT 0.00 Tax
BDT 1,450.00 tax excl.
BDT 1,450.00 tax excl.
BDT 0.00 Tax
BDT 1,450.00 tax incl.
More
Out-of-Stock
In stock: 0
Orange Pi 3 LTS 2GB Complete Set Robotics Bangladesh Quick view

Reference: RBD-2374

Orange Pi 3 LTS 2GB Complete Set

(0)
Open-source single-board computer Dual-band wireless WiFi and Bluetooth 5.0 2GB LPDDR3 SDRAM, 8GB EMMC Flash Supports Android 9, Ubuntu, Debian
BDT 10,290.00
BDT 10,290.00 tax incl.
BDT 10,290.00 tax excl.
BDT 10,290.00 tax excl.
BDT 10,290.00 tax incl.
BDT 10,290.00 tax incl.
BDT 0.00 Tax
BDT 10,290.00 tax excl.
BDT 10,290.00 tax excl.
BDT 0.00 Tax
BDT 10,290.00 tax incl.
More
Last items in stock
In stock: 1
PN532 NFC RFID Read / Write Module V3 Kit Robotics Bangladesh Quick view

Reference: RBD-0346

PN532 NFC RFID Read / Write Module V3 Kit

(0)
The PN532 is a highly integrated transmission module for contactless communication at 13.56 MHz including microcontroller functionality based on an 80C51 core with 40 Kbytes of ROM and 1 Kbytes of RAM. The PN532 combines a modulation and demodulation concept completely integrated for different kinds of contactless communication methods and protocols at...
BDT 820.00
BDT 820.00 tax incl.
BDT 820.00 tax excl.
BDT 820.00 tax excl.
BDT 820.00 tax incl.
BDT 820.00 tax incl.
BDT 0.00 Tax
BDT 820.00 tax excl.
BDT 820.00 tax excl.
BDT 0.00 Tax
BDT 820.00 tax incl.
More
In-Stock
In stock: 15
- BDT 15.00 Reduced price 35mm Piezo Ceramic Elements Sound Sensor Robotics Bangladesh Quick view

Reference: RBD-0222

35mm Piezo Ceramic Elements Sound Sensor

(0)
Sound pressure level: 85DB 10cm The input voltage: 30vp-p max Ultra-thin and lightweight Low power consumption for voltage type Operating Temperature: -20~70 Storage Temperature: -30-80 Clear sound
BDT 50.00 BDT 65.00
BDT 65.00 BDT 50.00 tax incl.
BDT 65.00 BDT 50.00 tax excl.
BDT 65.00 BDT 50.00 tax excl.
BDT 65.00 BDT 50.00 tax incl.
BDT 65.00 BDT 50.00 tax incl.
BDT 0.00 BDT 0.00 Tax
BDT 65.00 BDT 50.00 tax excl.
BDT 65.00 BDT 50.00 tax excl.
BDT 0.00 BDT 0.00 Tax
BDT 65.00 BDT 50.00 tax incl.
More
In-Stock
In stock: 387
Orange Pi Zero2 with Casing Robotics Bangladesh Quick view

Reference: RBD-2373

Orange Pi Zero2 with Casing

(0)
Orange Pi Zero 2 with casing Versatile open-source maker artifact Can be used for various applications like game consoles, IoT devices, smart home projects, 3D printing, cash registers, and smart gateways
BDT 4,990.00
BDT 4,990.00 tax incl.
BDT 4,990.00 tax excl.
BDT 4,990.00 tax excl.
BDT 4,990.00 tax incl.
BDT 4,990.00 tax incl.
BDT 0.00 Tax
BDT 4,990.00 tax excl.
BDT 4,990.00 tax excl.
BDT 0.00 Tax
BDT 4,990.00 tax incl.
More
In-Stock
In stock: 8
10x1 mm Thin Strong Neodymium Magnet Robotics Bangladesh Quick view

Reference: RBD-1746

Neodymium Disc Magnet N35 - 10 x 1 mm

(0)
Neodymium Magnet Shape: Disc Actual Size - 10 x 1 mm Note: Magnet size may deviate by up to 5%. If you require precise dimensions, please contact our customer support for exact measurements.
BDT 15.00
BDT 15.00 tax incl.
BDT 15.00 tax excl.
BDT 15.00 tax excl.
BDT 15.00 tax incl.
BDT 15.00 tax incl.
BDT 0.00 Tax
BDT 15.00 tax excl.
BDT 15.00 tax excl.
BDT 0.00 Tax
BDT 15.00 tax incl.
More
In-Stock
In stock: 430
Heart Rate Pulse Sensor Pulsesensor Sensor Module For Arduino Quick view

Reference: RBD-0348

Heart Rate Pulse Sensor Module For Arduino

(0)
A Color-Coded Cable, with a standard male header connectors. Plug it straight into an Arduino or a Breadboard. No soldering is required. The Pulse Sensor has 3 holes around the outside edge which make it easy to sew it into almost anything. Visualization software (made in Processing) to instantly see the output of the sensor and for troubleshooting....
BDT 309.00
BDT 309.00 tax incl.
BDT 309.00 tax excl.
BDT 309.00 tax excl.
BDT 309.00 tax incl.
BDT 309.00 tax incl.
BDT 0.00 Tax
BDT 309.00 tax excl.
BDT 309.00 tax excl.
BDT 0.00 Tax
BDT 309.00 tax incl.
More
In-Stock
In stock: 100
Camera Module - pcDuino V3 (2MP) Quick view

Reference: RBD-0226

Brand: SparkFun Electronics

Camera Module - pcDuino V3 (2MP)

(0)
Camera Module - pcDuino V3 (2MP)
BDT 2,000.00
BDT 2,000.00 tax incl.
BDT 2,000.00 tax excl.
BDT 2,000.00 tax excl.
BDT 2,000.00 tax incl.
BDT 2,000.00 tax incl.
BDT 0.00 Tax
BDT 2,000.00 tax excl.
BDT 2,000.00 tax excl.
BDT 0.00 Tax
BDT 2,000.00 tax incl.
More
Last items in stock
In stock: 1
Neodymium Magnet N52 (50*25*10mm) Robotics Bangladesh Quick view

Reference: RBD-1745

Neodymium Bar Magnet N52 - 48.5 x 24 x 9 mm

(0)
Neodymium Magnet Grade N52 Actual Size - 48.5 x 24 x 9 mm Note: Magnet size may deviate by up to 5%. If you require precise dimensions, please contact our customer support for exact measurements.
BDT 620.00
BDT 620.00 tax incl.
BDT 620.00 tax excl.
BDT 620.00 tax excl.
BDT 620.00 tax incl.
BDT 620.00 tax incl.
BDT 0.00 Tax
BDT 620.00 tax excl.
BDT 620.00 tax excl.
BDT 0.00 Tax
BDT 620.00 tax incl.
More
In-Stock
In stock: 43
10.1 Inch IPS TFT Monitor HD 1280x800 Portable Color Display Screen Quick view

Reference: RBD-0932

10.1 Inch IPS TFT Monitor HD 1280x800 Portable Color Display Screen

(0)
10.1 inch HD resolution(1280x800) IPS Monitor,Clear and colorful Screen. Multifunctional Monitor Screen: HDMI/VGA/BNC/USB/AV Input, Dual High-quality Built-in Speakers Support Raspberry Pi & Windows PC Automatically. Built-in Media Player with Remote.
BDT 10,990.00
BDT 10,990.00 tax incl.
BDT 10,990.00 tax excl.
BDT 10,990.00 tax excl.
BDT 10,990.00 tax incl.
BDT 10,990.00 tax incl.
BDT 0.00 Tax
BDT 10,990.00 tax excl.
BDT 10,990.00 tax excl.
BDT 0.00 Tax
BDT 10,990.00 tax incl.
More
Last items in stock
In stock: 3
UNI-T A12T Temperature Humidity Meter Quick view

Reference: RBD-0706

UNI-T A12T Temperature Humidity Meter

(0)
Dual temperature measurement. RoboticsBD Clock function: 12/24 hour modes  Alarm clock: Rings up to 60s   Comfort level: comfortable, wet, dry
BDT 2,100.00
BDT 2,100.00 tax incl.
BDT 2,100.00 tax excl.
BDT 2,100.00 tax excl.
BDT 2,100.00 tax incl.
BDT 2,100.00 tax incl.
BDT 0.00 Tax
BDT 2,100.00 tax excl.
BDT 2,100.00 tax excl.
BDT 0.00 Tax
BDT 2,100.00 tax incl.
More
Last items in stock
In stock: 3
0.96" Inch I2C OLED Display Yellow Robotics Bangladesh Quick view

Reference: RBD-0353

0.96" Inch I2C OLED Display Yellow

(0)
Driver IC: SSD1306 Support wide voltage: 3.3V-5V DC Communication: IIC Working temperature: -30-80 degrees. RoboticsBD
BDT 420.00
BDT 420.00 tax incl.
BDT 420.00 tax excl.
BDT 420.00 tax excl.
BDT 420.00 tax incl.
BDT 420.00 tax incl.
BDT 0.00 Tax
BDT 420.00 tax excl.
BDT 420.00 tax excl.
BDT 0.00 Tax
BDT 420.00 tax incl.
More
In-Stock
In stock: 22
LM35 Quick view

Reference: RBD-0241

LM35 Temperature Sensor

(0)
Calibrated directly in Degree Celsius (Centigrade) Linear at 10.0 mV/°C scale factor 0.5°C accuracy guarantee-able (at a25°C) Suitable for remote applications Low cost due to wafer-level trimming Operates from 4 to 30 volts Less than 60 mA current drain Low self-heating, 0.08°C in still air Non-linearity only 0.25°C typical  LM35 (working) tested by...
BDT 155.00
BDT 155.00 tax incl.
BDT 155.00 tax excl.
BDT 155.00 tax excl.
BDT 155.00 tax incl.
BDT 155.00 tax incl.
BDT 0.00 Tax
BDT 155.00 tax excl.
BDT 155.00 tax excl.
BDT 0.00 Tax
BDT 155.00 tax incl.
More
In-Stock
In stock: 75
Out-of-Stock BBC Micro Bit Pocket Sized Single Board Computer 1. Quick view

Reference: RBD-1864

BBC Micro Bit Pocket Sized Single Board Computer 1.5

(0)
USB and Bluetooth Low energy connectivity. Compass and Accelerometer. 2 x user-assignable buttons. A 25 LED display. 21 pin edge connector.
BDT 3,490.00
BDT 3,490.00 tax incl.
BDT 3,490.00 tax excl.
BDT 3,490.00 tax excl.
BDT 3,490.00 tax incl.
BDT 3,490.00 tax incl.
BDT 0.00 Tax
BDT 3,490.00 tax excl.
BDT 3,490.00 tax excl.
BDT 0.00 Tax
BDT 3,490.00 tax incl.
More
Out-of-Stock
In stock: 0
- BDT 395.00 Reduced price Out-of-Stock UT890D Digital Multimeter Quick view

Reference: RBD-0709

UNI-T UT890D+ Digital Multimeter

(0)
6000 Counts True RMS voltage and current measurements Capacitance, Resistance, Buzzer, Diode
BDT 2,600.00 BDT 2,995.00
BDT 2,995.00 BDT 2,600.00 tax incl.
BDT 2,995.00 BDT 2,600.00 tax excl.
BDT 2,995.00 BDT 2,600.00 tax excl.
BDT 2,995.00 BDT 2,600.00 tax incl.
BDT 2,995.00 BDT 2,600.00 tax incl.
BDT 0.00 BDT 0.00 Tax
BDT 2,995.00 BDT 2,600.00 tax excl.
BDT 2,995.00 BDT 2,600.00 tax excl.
BDT 0.00 BDT 0.00 Tax
BDT 2,995.00 BDT 2,600.00 tax incl.
More
Out-of-Stock
In stock: 0
RTD PT-100 Temperature Sensor Quick view

Reference: RBD-0493

RTD PT-100 Temperature Sensor 100mm Probe 0‑400℃

(0)
Temperature Range : 0C-400C Shield Material : Metal Total Length(Approx.) : 2M / 6.6 Ft; Weight : 46g;
BDT 1,150.00
BDT 1,150.00 tax incl.
BDT 1,150.00 tax excl.
BDT 1,150.00 tax excl.
BDT 1,150.00 tax incl.
BDT 1,150.00 tax incl.
BDT 0.00 Tax
BDT 1,150.00 tax excl.
BDT 1,150.00 tax excl.
BDT 0.00 Tax
BDT 1,150.00 tax incl.
More
In-Stock
In stock: 18
MAX7219 Red Dot Matrix Module MCU Control Display Module DIY Kit For Arduino Quick view

Reference: RBD-0384

MAX7219 Red Dot Matrix Module MCU Control Display Module DIY Kit For Arduino

(0)
Driver Chip: MAX7219 Input Voltage: 3.7 to 5.3 V Input Current: 320 mA Display Dimensions: 32x32x6 (LxWxH) mm PCD Dimensions: 50×32 (LxW) mm Soldering is required
BDT 250.00
BDT 250.00 tax incl.
BDT 250.00 tax excl.
BDT 250.00 tax excl.
BDT 250.00 tax incl.
BDT 250.00 tax incl.
BDT 0.00 Tax
BDT 250.00 tax excl.
BDT 250.00 tax excl.
BDT 0.00 Tax
BDT 250.00 tax incl.
More
In-Stock
In stock: 10
470 Ohm 1/4w - Pack of 5 Quick view

Reference: 0245

Kiloohm (KΩ) 1/4w Resistors - Pack of 5

(0)
Choose your desire Resistor value from below: 
BDT 5.00
BDT 5.00 tax incl.
BDT 5.00 tax excl.
BDT 5.00 tax excl.
BDT 5.00 tax incl.
BDT 5.00 tax incl.
BDT 0.00 Tax
BDT 5.00 tax excl.
BDT 5.00 tax excl.
BDT 0.00 Tax
BDT 5.00 tax incl.
More
In-Stock
In stock: 614
KWSIC Folding Cordless Electric Drill Screwdriver Power Drill with 45 Bits Tool Set Robotics Bangladesh Quick view

Reference: RBD-1577

KWSIC Folding Cordless Electric Drill Screwdriver Power Drill with 45 Bits Tool Set

(0)
45pcs in 1 electric screwdriver. RoboticsBD Non-slip rubber design of handle for comfortable to operate. Forward/reverse slide-driving to screw-removal.  Led working / charge indicator / battery capacity indicator light.  Foldable 180°  Torque: 3n.m  Comes with plastic storage box for easy transport.  Ideal for the iron, wood, steel and other materials of...
BDT 2,821.00
BDT 2,821.00 tax incl.
BDT 2,821.00 tax excl.
BDT 2,821.00 tax excl.
BDT 2,821.00 tax incl.
BDT 2,821.00 tax incl.
BDT 0.00 Tax
BDT 2,821.00 tax excl.
BDT 2,821.00 tax excl.
BDT 0.00 Tax
BDT 2,821.00 tax incl.
More
In-Stock
In stock: 15
Out-of-Stock NVIDIA Jetson Nano 2GB Developer Kit Robotics Bangladesh Quick view

Reference: RBD-1549

NVIDIA Jetson Nano 2GB Developer Kit

(0)
Micro-USB: 5V 2A USB C: 5V 3A. 128-core NVIDIA Maxwell GPU Quad-core ARM A57 2 GB 64-bit LPDDR4 Connectivity by Gigabit Ethernet (RJ45)
BDT 10,990.00
BDT 10,990.00 tax incl.
BDT 10,990.00 tax excl.
BDT 10,990.00 tax excl.
BDT 10,990.00 tax incl.
BDT 10,990.00 tax incl.
BDT 0.00 Tax
BDT 10,990.00 tax excl.
BDT 10,990.00 tax excl.
BDT 0.00 Tax
BDT 10,990.00 tax incl.
More
Out-of-Stock
In stock: 0
Back to top

Follow us on Facebook

Facebook