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Electronics Module (11)

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Wheel (2)

Quadcopter (4)
Soldering Accessories (8)

Basic Components (12)

Development Boards (30)

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Sensors (32)

Cables/Wires/Connectors (10)
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!
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!
- 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
- 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 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
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!
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
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!
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!
Compact & High-Precision Barometric Sensor
Measures Atmospheric Pressure & Temperature
Supports I2C & SPI Communication
Operating Voltage: 1.71V to 3.6V (Typical: 3.3V)
Pressure Range: 300 hPa to 1100 hPa
Perfect for Altitude Measurement & Weather Forecasting
Availability: Order now from Circuit City BD!
- 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
- 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