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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!
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!
Operating Voltage: 2.5V - 4V DC
Current Consumption: 130 - 220mA
Flow Rate: 80 - 120 L/H
Maximum Lift: 40 - 110 mm
Ideal for DIY Projects & Hobby Kits
Availability: Order now from Circuit City BD!
Display Type: 16x2 Character LCD
Backlight Options: Blue or Yellow
Character Color: White on Blue/Yellow Background
Power Supply: 5V DC
Compatible with Arduino & Microcontrollers
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!
Resistance: 1K Ohm (1000Ω)
Power Rating: 1/4 Watt (0.25W)
Tolerance: ±1%
Voltage Rating: 250V Working, 500V Overload
Type: Fixed Resistor, Through-Hole Mounting
Availability: Order now from Circuit City BD!
- 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
- 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
- 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
- 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
- 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.
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!
High-Strength Plastic Wheel with Rubber Grip
Diameter: 65mm, Width: 28mm
Upgraded Tread for Greater Friction
Tire with Sponge Liner for Durability
Perfect for BO Motors & DIY Robotics
Color: Yellow Rim & Black Rubber Tire
Availability: Order now from Circuit City BD!
BO Series DC Motor with Plastic Gearbox
Operating Voltage: 3V – 6V DC
Rated Speed: 100 – 150 RPM
Compact, Lightweight & Easy to Install
Ideal for DIY, Mobile Robots & 2WD Platforms
Cost-Effective Plastic Gear Construction
Availability: Order now from Circuit City BD!
High-Power Motor Driver for DC & Stepper Motors
Operating Voltage: 5V – 35V DC
Peak Current: 2A per motor
Continuous Current: 0 – 36mA
Built-in Over-Current & Thermal Protection
Integrated Heatsink for Better Performance
Dual H-Bridge Motor Driver (L298N IC)
Availability: Order now from Circuit City BD!
- Brand: iMAX
- Power: 80W max output
- Battery Compatibility: Li-ion, LiPo, LiFe, NiCd, NiMH, Pb
- Input Voltage: 11–18V DC (Power Adapter Required, Not Included)
- Features: Microprocessor Controlled, Individual Cell Balancing.
- Ideal for: RC Hobbyists, Drone Pilots, Robotics, DIY Electronics
- Available at: Circuit City BD
- Brand: iMAX B6-AC
- Power: 80W Discharge, 10W Charge
- Battery Compatibility: Li-ion, LiPo, LiFe, NiMH, NiCd, Pb
- Input Voltage: 100~240V AC / 11~18V DC
- Available at: Circuit City BD
- Brand: Wild Scorpion
- Capacity: 2200mAh
- Voltage: 11.1V (3S)
- Discharge Rate: 30C for High-Performance Output
- Max Charging Rate: 5C for Fast Charging
- Connector Type: XT for Charging, JST for Discharge
- Size: 105 x 35 x 24mm
- Weight: ~183g
- Ideal for: RC Drones, FPV Systems, UAVs, RC Cars, and High-Power Applications
- Available at: Circuit City BD
- Brand: Wild Scorpion
- Capacity: 1500mAh
- Voltage: 11.1V (3S)
- Discharge Rate: 25C for High-Performance Output
- Max Charging Rate: 5C Fast Charging Support
- Connector Type: XT for Charging, JST for Discharge
- Size: 68 x 35 x 23.5mm
- Weight: ~112g
- Ideal for: RC Drones, FPV Systems, UAVs, and High-Performance Models
- Available at: Circuit City BD
- Brand: Wild Scorpion
- Capacity: 1100mAh
- Voltage: 11.1V (3S)
- Discharge Rate: 25C for High-Performance Output
- Max Charging Rate: 5C Fast Charging Support
- Connector Type: XT for Charging, JST for Discharge
- Size: 58.5 x 29.3 x 20mm
- Weight: ~94g
- Ideal for: RC Drones, FPV Systems, UAVs, and High-Performance Models
- Available at: Circuit City BD
- Brand: LiPower
- Capacity: 3200mAh
- Voltage: 11.1V (3S)
- Discharge Rate: High-Performance Output
- Max Charging Rate: Fast Charging Support
- Connector Type: XT-60 for Charging, JST for Discharge
- Size: 138 x 42 x 21mm
- Weight: ~255g
- Ideal for: RC Cars, Drones, UAVs, FPV Systems, and Power Tools
- Available at: Circuit City BD
- Brand: LiPower
- Capacity: 2200mAh
- Voltage: 11.1V (3S)
- Discharge Rate: 35C
- Max Charging Rate: 5C
- Connector Type: XT-60 for Charging, JST for Discharge
- Size: 118 x 34 x 28mm
- Weight: ~185g
- Ideal for: RC Cars, Drones, UAVs, FPV Systems, and Power Tools
- Available at: Circuit City BD
- Brand: LiPower
- Capacity: 1550mAh
- Voltage: 11.1V (3S)
- Discharge Rate: 35C
- Max Charging Rate: 5C
- Connector Type: XT for Charging, JST for Discharge
- Size: 75 x 35 x 24mm
- Weight: ~120g
- Perfect for: RC Cars, Drones, UAVs, FPV Systems, and Power Tools
- Available at: Circuit City BD