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    Electronics Module (11)

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    Quadcopter (4)

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    Basic Components (12)

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    Development Boards (30)

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    Battery & Charger (18)

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    Micro Controller (26)

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    Sensors (32)

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    Cables/Wires/Connectors (10)

    • Light Dependent Resistor(LDR) 5 mm
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    Light Dependent Resistor(LDR) 5 mm

    10.00৳  Add to cart

    • LDR 5 mm – Light Sensitive Resistor

    • Resistance changes with ambient light levels

    • Dark resistance: 1–20 MΩ

    • PCB Through-Hole Mount | 2 Pins

    • Available now at Circuit City BD

    IR Obstacle Sensor
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    IR Obstacle Sensor

    70.00৳  Add to cart

    • Infrared Obstacle Detection Sensor

    • Detection Distance: 2 ~ 30cm

    • Detection Angle: 35°

    • LM393 Comparator for Stable Output

    • Works with 3.6V to 5V Power Supply

    • Easy Mounting with 3mm Screw Holes

    • Availability: Order now from Circuit City BD!

    ESP-32 NodeMCU 30Pin
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    ESP-32 NodeMCU 30Pin

    410.00৳  Add to cart
    • ESP-32 NodeMCU 30Pin
    • Dual-core WiFi + Bluetooth microcontroller
    • Supports UART, GPIO, ADC, DAC, PWM, I2C, and I2S interfaces
    • Built-in 32Mbit flash memory for enhanced performance
    • Available now 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
    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
    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
    ESP-8266 (CH340) NodeMCU Lua V3
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    ESP-8266 (CH340) NodeMCU Lua V3

    390.00৳  Add to cart
    • Product Name: ESP-8266 (CH340) NodeMCU Lua V3
    • Wi-Fi Module: Built-in ESP8266
    • Power Supply: 4.5V ~ 9V (USB-powered)
    • Communication: UART/GPIO interface
    • Flash Size: 4MB
    • Availability: Available at Circuit City BD
    HX1838 NEC Coding IR Remote Control Sensor Module
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    HX1838 NEC Coding IR Remote Control Sensor Module

    380.00৳  Add to cart

    • IR Remote Control & Sensor Module

    • Operating Voltage: 2.7V - 5.5V

    • Transmission Distance: Up to 8m

    • NEC Encoding Format

    • Internal PCM Filter & EMI Shielding

    • Battery (CR2025) Not Included

    • Availability: Order now from Circuit City BD!

    IR Receiver Shielded
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    IR Receiver Shielded

    15.00৳  Add to cart

    • Supply Voltage: 3.0V - 5.0V DC

    • Receiver Frequency: 38 KHz

    • Low Power Consumption & High Immunity

    • Internal Filter for PCM Frequency

    • TTL & CMOS Compatibility

    • Availability: Order now from 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
    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
    ESP-32 NodeMCU 30Pin Type-C
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    ESP-32 NodeMCU 30Pin Type-C

    450.00৳  Add to cart
    • Product Name: ESP-32 NodeMCU 30Pin Type-C
    • Wi-Fi Module: ESP-WROOM-32s with IEEE 802.11 b/g/n
    • Built-in Flash: 32Mbit
    • Interfaces: UART, GPIO, ADC, DAC, SDIO, PWM, I2C, I2S
    • Logic Level: 3.3V
    • Power Supply: 5V
    • Availability: Available at Circuit City BD
    HC-SR501 PIR Infrared Motion Sensor
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    HC-SR501 PIR Infrared Motion Sensor

    95.00৳  Add to cart
    • Product Name: HC-SR501 PIR Infrared Motion Sensor
    • Operating Voltage: 4.5V-20V DC
    • Detection Distance: 3 to 7m (Adjustable)
    • Detection Angle: <140°
    • Current Consumption: <60uA
    • Availability: Available at Circuit City BD
    Arduino Uno R3 SMD
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    Arduino Uno R3 SMD

    570.00৳  Add to cart
    • Microcontroller: ATmega328 (SMD) with CH340G interface.
    • Operating Voltage: Works at 5V.
    • Input Voltage (Recommended): Accepts 7–12V as input.
    • Input Voltage (Limit): Operates within 6–20V safely.
    • Digital I/O Pins: Includes 14 pins, 6 of which support PWM output.
    • Analog Input Pins: Features 6 analog input pins.
    • Flash Memory: 32 KB (0.5 KB used by bootloader).
    • Clock Speed: Runs at 16 MHz.
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    STM32F103C8T6 ARM Minimum System Development Board
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    STM32F103C8T6 ARM Minimum System Development Board

    370.00৳  Add to cart
    • Model: STM32F103C8T6
    • Core: ARM Cortex-M3 32-bit CPU
    • Clock Speed: 72MHz
    • Memory: 64KB Flash, 20KB SRAM
    • Power Supply: 2.0V - 3.6V
    • Onboard Mini USB for Power & Communication
    • Ideal for STM32 Development & Prototyping
    • 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
    DHT22/AM2302 Digital Temperature and Humidity Sensor Module
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    DHT22/AM2302 Digital Temperature and Humidity Sensor Module

    450.00৳  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
    ESP8266 (ESP-01) Serial WiFi Wireless Transceiver Module
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    ESP8266 (ESP-01) Serial WiFi Wireless Transceiver Module

    170.00৳  Add to cart
    • Product Name: ESP8266 (ESP-01) Serial WiFi Wireless Transceiver Module
    • Wi-Fi Standard: 802.11 b/g/n
    • Flash Memory: 1MB
    • Processor: 32-bit CPU with TCP/IP stack
    • Power Efficiency: Standby power <1.0mW (DTIM3)
    • Interfaces: UART, SPI, SDIO 1.1/2.0
    • Applications: IoT, home automation, wireless sensor networks
    • 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
    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

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