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37GB Gear Motor 500RPM 12V
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37GB Gear Motor 500RPM 12V

1,080.00৳  Add to cart
  • Product Name: 37GB Gear Motor 500RPM 12V
  • Voltage: 12V DC
  • Speed: 500 RPM
  • Torque: High torque with low current consumption
  • Build Quality: Metal gears, durable construction
Availability: Available at Circuit City BD
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!

1 Channel 5V Relay Module
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1 Channel 5V Relay Module

99.00৳  Add to cart

  • Relay Type: 1-Channel 5V Relay

  • Operating Voltage: 3V - 5V DC

  • Switching Capacity: AC 250V/10A, DC 30V/10A

  • Trigger Method: High-Level & Low-Level Selectable

  • Microcontroller Compatibility: Arduino, AVR, PIC, ARM, DSP

  • Availability: Order now from Circuit City BD!

4V 2000 RPM DC Motor
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4V 2000 RPM DC Motor

40.00৳  Add to cart

  • Operating Voltage: 3V – 6V DC

  • RPM: 2000

  • Shaft Diameter: 2mm

  • Shaft Length: 10mm

  • Weight: 15g

  • Availability: Order now from 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
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
HW-411A LM2596 DC-DC Step Down Adjustable Power Supply Module 3A Max Buck Converter
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HW-411A LM2596 DC-DC Step Down Adjustable Power Supply Module 3A Max Buck Converter

100.00৳  Add to cart
4 Channel 5V Relay Module
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4 Channel 5V Relay Module

300.00৳  Add to cart

  • Channels: 4

  • Trigger Voltage: 5V DC

  • Switching Voltage: 250V AC / 30V DC @ 10A

  • Microcontroller Compatibility: Arduino, Raspberry Pi, PIC, AVR, ARM, etc.

  • High/Low-Level Trigger Modes

  • Availability: Order now from 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
TDS Meter Probe Water Quality Monitoring V1 Sensor Module for Arduino
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TDS Meter Probe Water Quality Monitoring V1 Sensor Module for Arduino

1,650.00৳  Add to cart

  • TDS Water Quality Sensor | Arduino Compatible | V1 Module

  • Measures 0–1000 ppm with ±10% Accuracy

  • Waterproof Probe for Long-Term Monitoring

  • Analog Output 0–2.3V, Wide Voltage Input 3.3V–5.5V

  • Available Now at Circuit City BD

HC-05 Bluetooth Module for Arduino
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HC-05 Bluetooth Module for Arduino

350.00৳  Add to cart

  • Wireless Serial Bluetooth Module for Arduino & Microcontrollers

  • Bluetooth Specification: V2.0 + EDR

  • Frequency: 2.4GHz ISM Band

  • Modulation: GFSK (Gaussian Frequency Shift Keying)

  • Operating Range: Up to 10 meters

  • Supports Master & Slave Mode

  • Low Power Consumption

  • Availability: Order now from Circuit City BD!

2 Channel 5V Relay Module
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2 Channel 5V Relay Module

150.00৳  Add to cart

  • Dual-Channel 5V Relay Module

  • Low-Level Trigger Relay

  • Trigger Voltage: 3.3V – 5V

  • Switching Capacity: 250V AC @ 10A, 30V DC @ 10A

  • Opto-Isolated for High Reliability

  • Built-in Back EMF Protection

  • Two LED Indicators for Relay Status

  • Availability: Order now from 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!

I2C LCD Adapter Module
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I2C LCD Adapter Module

90.00৳  Add to cart

  • Interface: I2C (PCF8574 Chip)

  • Compatible LCDs: 16×2 & 20×4 Character Displays

  • Power Supply: 5V DC

  • Adjustable Contrast & Backlight Control

  • Up to 8 Modules on a Single I2C Bus

  • 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
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
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

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