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    Development Boards (32)

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    Battery & Charger (8)

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    Micro Controller (27)

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  • Sensors

    Sensors (29)

    • HC-SR04 Ultrasonic Distance Sonar Sensor
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    HC-SR04 Ultrasonic Distance Sonar Sensor

    100.00৳  Add to cart
    • Product Name: HC-SR04 Ultrasonic Distance Sonar Sensor
    • Operating Voltage: 5V
    • Measuring Range: 2cm to 400cm
    • Accuracy: ±3mm
    • Applications: Distance measurement, obstacle detection, automation projects
    • Availability: Available at Circuit City BD
    18650 Battery Holder – 3 Cell
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    18650 Battery Holder – 3 Cell

    75.00৳  Add to cart
    • Compatible Battery: 3 x 18650 Li-ion Batteries
    • Output Voltage: 11.1V (Series Connection)
    • Material: High-Quality Plastic
    • Wire Length: 15cm
    • Easy to Install & Use
    • Available at: Circuit City BD
    18650 Battery Holder – 2 Cell
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    18650 Battery Holder – 2 Cell

    50.00৳  Add to cart
    • Compatible Battery: 2 x 18650 Li-ion Batteries
    • Output Voltage: 7.2V (Series Connection)
    • Material: High-Quality Plastic
    • Wire Length: 15cm
    • Easy to Install & Use
    • Available at: Circuit City BD
    18650 Battery Holder – 1 Cell
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    18650 Battery Holder – 1 Cell

    40.00৳  Add to cart
    • Compatible Battery: Standard 18650 Li-ion Battery
    • Output Voltage: 3.7V
    • Material: High-Quality Plastic
    • Wire Length: 15cm
    • Easy to Install & Use
    • Available at: Circuit City BD
    18650 2600mAh Original (Grade A) Rechargeable Li-ion Battery
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    18650 2600mAh Original (Grade A) Rechargeable Li-ion Battery

    320.00৳  Add to cart
    • Battery Type: Hybrid 18650 Li-ion
    • Capacity: 2600mAh (9.62Wh)
    • Voltage: 3.7V (Unprotected)
    • Max Discharge Rate: 10A
    • Rechargeable: Yes (Standard Charging Time: 4 Hours)
    • Ideal for: Power Banks, Laptops, Flashlights, and DIY Projects
    • Available at: Circuit City BD
    18650 2000mAh Original (Grade A) Rechargeable Li-ion Battery
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    18650 2000mAh Original (Grade A) Rechargeable Li-ion Battery

    280.00৳  Add to cart
    • 3.7V 18650 rechargeable lithium-ion battery
    • 2000mAh capacity for reliable power supply
    • Ideal for laptops, flashlights, and other electronic devices
    • No PCB protection; suitable for DIY projects
    • Available at Circuit City BD
    9V Battery Connector for Arduino
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    9V Battery Connector for Arduino

    25.00৳  Add to cart
    • Cable Length: 12cm (Approx.)
    • Connector Type: 9V Battery Snap with DC Barrel Jack (2.1mm x 5.5mm)
    • Material: High-Quality, Environment-Friendly Design
    • Application: Ideal for Arduino, Microcontrollers, and DIY Projects
    • Availability: Available at Circuit City BD
    9V Battery Connector
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    9V Battery Connector

    10.00৳  Add to cart
    • Material: Hard Leather, High-Quality Build
    • Wire Length: 5cm, Open-Wire End for Easy Connection
    • Polarity Protection: Prevents Reverse Connection & Short Circuit
    • Application: Ideal for Arduino, DIY Projects, and Battery-Powered Circuits
    • Availability: Available at Circuit City BD
    Battery 9V
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    Battery 9V

    75.00৳  Add to cart
    • Nominal Voltage: 9V
    • Built Quality: Leakproof Metal Jacket
    • Environment-Friendly: 0% Mercury and Cadmium
    • Connector Type: Corrosion-Free Press Stud Terminal
    • Application: DIY Projects, Electronics, Household Devices
    • Availability: Available at Circuit City BD
    Active Speaker Buzzer Module for Arduino 5V
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    Active Speaker Buzzer Module for Arduino 5V

    60.00৳  Add to cart
    • Operating Voltage: 1.5V - 15V DC
    • Tone Generation Range: 1.5 kHz - 2.5 kHz
    • Current Consumption: Less than 25mA
    • Application: Alarms, Timers, Notifications, Sound Alerts
    • Availability: Available at Circuit City BD
    PCB Mounted Passive Buzzer Module
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    PCB Mounted Passive Buzzer Module

    70.00৳  Add to cart
    • Operating Voltage: 1.5V - 15V DC
    • Tone Generation Range: 1.5 kHz - 2.5 kHz
    • Current Consumption: Less than 25mA
    • Application: Alarms, Timers, Notifications, Sound Alerts
    • Availability: Available at Circuit City BD
    LDR Photosensitive Sensor Module
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    LDR Photosensitive Sensor Module

    75.00৳  Add to cart
    • Operating Voltage: 3.3V - 5V DC
    • Output: Analog (A0) & Digital (D0) Outputs
    • Adjustable Sensitivity: Potentiometer for light intensity control
    • Application: Light detection, brightness control, smart lighting
    • Availability: Available at Circuit City BD
    Water Level Depth Detection Sensor Module
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    Water Level Depth Detection Sensor Module

    50.00৳  Add to cart
    • Operating Voltage: 3V - 5V DC
    • Sensor Type: Analog Output
    • Detection Area: 40mm x 16mm
    • Features: Low power consumption, easy water level measurement, high sensitivity
    • Application: Water tank monitoring, rain detection, liquid level measurement
    • Availability: Available at Circuit City BD
    KY-026 The Flame Sensor Module Digital & Analog Output
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    KY-026 The Flame Sensor Module Digital & Analog Output

    85.00৳  Add to cart
    • Operating Voltage: 3.3V - 5V DC
    • Detection Range: 760nm - 1100nm flame spectrum, up to 100cm
    • Features: Digital & analog output, adjustable sensitivity, LM393 comparator for stable readings
    • Application: Fire detection, firefighting robots, security systems
    • Availability: Available at Circuit City BD
    Flame Sensor Fire Detection Module
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    Flame Sensor Fire Detection Module

    70.00৳  Add to cart
    • Operating Voltage: 3.3V - 5V DC
    • Detection Range: 760nm - 1100nm flame spectrum
    • Features: High sensitivity, 60° detection angle, onboard signal output, adjustable sensitivity
    • Application: Fire detection, security systems, flame monitoring
    • Availability: Available at Circuit City BD
    YL-69 Soil Hygrometer Humidity & Soil Moisture Detection Sensor
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    YL-69 Soil Hygrometer Humidity & Soil Moisture Detection Sensor

    120.00৳  Add to cart
    • Operating Voltage: 3.3V - 5V DC
    • Output Modes: Analog & Digital
    • Features: LM393 comparator chip, power indicator, accurate moisture detection
    • Application: Smart irrigation, greenhouse monitoring, soil moisture measurement
    • Availability: Available at Circuit City BD
    DHT22/AM2302 Digital Temperature and Humidity Sensor Module
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    DHT22/AM2302 Digital Temperature and Humidity Sensor Module

    620.00৳  Add to cart
    • Measurement Range: Temperature -40°C to 80°C, Humidity 0% to 99.9% RH
    • Accuracy: Temperature ±0.5°C, Humidity ±2% RH
    • Features: High precision, capacitive type, calibrated digital signal, long-term stability
    • Application: Suitable for weather monitoring, HVAC systems, industrial applications
    • Availability: Available at Circuit City BD
    MQ-135 Gas Sensor
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    MQ-135 Gas Sensor

    170.00৳  Add to cart
    • Gas Detection: Detects Ammonia, Sulfide, Benzene, Alcohol, Smoke, and Harmful Gases
    • Sensitivity: Adjustable sensitivity with fast response and recovery
    • Output: Analog voltage output (0-5V) with a signal output indicator
    • Application: Suitable for air quality monitoring, gas leak detection, and industrial safety
    • Availability: Available at Circuit City BD
    KY-037 Microphone Sound Sensor Detection Module
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    KY-037 Microphone Sound Sensor Detection Module

    90.00৳  Add to cart
    • Product Name: KY-037 Microphone Sound Sensor Detection Module
    • Main Chip: LM393, Electret Condenser Microphone
    • Operating Voltage: 3.3V - 5V
    • Induction Distance: 0.5 Meter
    • Output Signal: Single Channel, Low-Level Output
    • Size: 43mm x 17mm x 8mm
    • Weight: 3g
    • Applications: Sound detection, voice-activated systems, security alarms
    • Availability: Available at Circuit City BD
    FC-04 Microphone Sound Sensor Module
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    FC-04 Microphone Sound Sensor Module

    75.00৳  Add to cart
    • Product Name: FC-04 Microphone Sound Sensor Module
    • Main Chip: LM393, Electret Condenser Microphone
    • Operating Voltage: 3.3V - 5V
    • Induction Distance: 0.5 Meter
    • Output Signal: Single Channel, Low-Level Output
    • Size: 43mm x 17mm x 8mm
    • Weight: 3g
    • Applications: Sound detection, voice-activated systems, security alarms
    • Availability: Available at Circuit City BD
    US-015 Ultrasonic Module Distance Measuring Transducer Sensor
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    US-015 Ultrasonic Module Distance Measuring Transducer Sensor

    250.00৳  Add to cart
    • Product Name: US-015 Ultrasonic Module Distance Measuring Transducer Sensor
    • Operating Voltage: 5V
    • Measuring Range: 2cm to 400cm
    • Accuracy: ±0.3cm
    • Applications: Distance measurement, automation, robotics, liquid level detection
    • Availability: Available at Circuit City BD
    MQ-2 Flammable Gas & Smoke Sensor
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    MQ-2 Flammable Gas & Smoke Sensor

    150.00৳  Add to cart
    • Product Name: MQ-2 Flammable Gas & Smoke Sensor
    • Operating Voltage: 5V
    • Preheat Duration: 20 seconds
    • Output Voltage: 0-5V (Analog & Digital)
    • Applications: Gas leakage detection, industrial safety, home security
    • Availability: Available at Circuit City BD
    MAX30102 Heart Rate and Pulse Sensor Module
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    MAX30102 Heart Rate and Pulse Sensor Module

    380.00৳  Add to cart
    • Product Name: MAX30102 Heart Rate and Pulse Sensor Module
    • LED Wavelength: Red: 660nm, Infrared: 880nm
    • Power Supply Voltage: 3.3V~5V
    • Communication Interface: I2C
    • Applications: Wearables, medical monitoring, fitness devices
    • Availability: Available at Circuit City BD
    Heart Rate Pulse Sensor Module
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    Heart Rate Pulse Sensor Module

    300.00৳  Add to cart
    • Product Name: Heart Rate Pulse Sensor Module
    • Power: 3-5V
    • Diameter: 16mm
    • Magnification: 330
    • LED Wavelength: 609nm
    • Availability: Available at Circuit City BD

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