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8 Channel Eight Ch Relay Module 5V

Supply voltage – 3.75V to 6V
Trigger current – 5mA
Current when relay is active - ~70mA (single), ~600mA (all eight)
Relay maximum contact voltage – 250VAC, 30VDC
Relay maximum current – 10A

8 Inch Propeller Pair CW/CCW for Quadcopter/RC Plane DIY

Length: 8″.
Pitch: 4.5″.
Weight: 20 gm.
Shaft Diameter: 9 mm.
Material: ABS
One clockwise and one anti-clockwise propeller

A3144 hall effect sensor module Arduino Compatible

Operating Voltage: 5V DC
Digital Output 0V or 5V direct interface to a microcontroller with LED indication
Sensor: Allegro A3144 Hall-effect switch
LM393 comparator with threshold preset
PCB Size: 32x12mm
Detector type: Magnetic Sensing Hall effect
Detecting range: 7 mm LM393 based design
Easy to use with Microcontrollers or even with normal Digital/Analog IC
Small, cheap and easily available

A4988 Stepper Motor Driver Module CNC Shield Compatible

Max. Operating Voltage: 35V
Min. Operating Voltage: 8V
Max. Current Per Phase: 2A
Microstep resolution: Full step, ½ step, ¼ step, 1/8 and 1/16 step
Reverse voltage protection: No
Dimensions: 15.5 × 20.5 mm (0.6″ × 0.8″)
Short-to-ground and shorted-load protection
Low RDS(ON) outputs
Thermal shutdown circuitry

AI-Thinker NodeMCU VC-02 Offline Speech Recognition Module

All GPIOs can be configured as external interrupt input and wake-up source
One full-duplex UART with a maximum rate of 3Mbps
Support I2C， DAC， PWM, and multiple interfaces
Built-in 242KB high-speed SRAM
Built-in 2MB FLASH
Support dual-channel DAC output
32bit RISC core, running at 240MHz
Support DSP instruction set and FPU floating point operation unit

Hot

Analog PH Sensor Kit with PH Electrode Probe for Arduino

Heating voltage: 5V ±0.2V (AC / DC)
Working current: 5-10mA
Detectable concentration range: PH0-14
Detection Temperature range: 0-80℃
Response time: <5S
Settling Time: <60S
Component Power: <0.5W
Working temperature: -10 -50℃(nominal temperature 20℃)

Arduino CNC Shield for Stepper Motor

Arduino UNO shield form factor, compatible with Arduino UNO.
GRBL v1.1 compatible. (Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals)
Uses removable A4988 compatible stepper drivers (Not Included)
PWM Spindle and direction pins
4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins A4 and A3)
2 x End stops for each axis (6 in total) + one Probe
Coolant enable output
Jumpers to set the Micro-Stepping for the stepper drivers.
Stepper Motors can be connected with 4 pin connectors or soldered in place.
Runs on 12-35V DC. (Depending on Stepper driver

Arduino Mega 2560 R3 with USB Cable

microcontroller board based on theATmega1280
54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4UARTs(hardware serial ports),
16MHzcrystal oscillator
USB connection
an ICSP header
reset button

Arduino Nano with USB Cable

ATmega328P Microcontroller is from 8-bit AVR family
Operating voltage is 5V
Input voltage (Vin) is 7V to 12V
Input/Output Pins are 22
Analog i/p pins are 6 from A0 to A5
Digital pins are 14
Power consumption is 19 mA
I/O pins DC Current is 40 mA
Flash memory is 32 KB
SRAM is 2 KB
EEPROM is 1 KB
CLK speed is 16 MHz
Weight-7g
Size of the printed circuit board is 18 X 45mm
Supports three communications like SPI, IIC, & USART

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Arduino UNO R3 with USB Cable

14 digital I/O pins (six of which provide PWM output)
3 V supply generated by an on-board regulator
Six analog input pins
32 KB of flash memory
Can supply 40 mA of DC current per pin
16 MHz clock speed

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As608 Optical Fingerprint Sensor Module Biometric

On board flash memory
Can store up to 162 fingerprints
Easy TTL serial interface with controller and other systems
Green and red LED light indication
Optical technology
Compact size
Can capture images up to resolution 500 dpi

Hot

BO Wheel 65mm Diameter 26mm Width Yellow

Shaft Diameter (mm) : 5.4mm-(round side) and 3.5mm-(flat side)
Wheel Diameter(mm) : 65
Wheel Width(mm) : 26
Loading Capacity (Kg) : 2

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Breadboard MB-102 830 Points Solderless Prototype Board

Mb102 Bread Board
830 Solder-less Points
Ideal for Experimenting With Circuit Design In Labs
Compatible with resistance, diodes, transistors, LED’s, Capacitors and other types of electronic components
Completely reusable
Colored coordinates for easy components placement.
Phosphor bronze nickel plated spring clips.
Accept a variety of wire sizes 20-29 AWG

Hot

Brushless Dc Motor 1000 KV For Quadcopter/ RC Motor

Rpm/V: 1000kv
Shaft: 3.17mm
Voltage: 2S~4S (7.4v to 14.8v)
Weight: 52g
Watts: 210w
Max Current: 21A
ESC: 30A
Suggested Prop: 8x4 (4S) ~ 10x7 (2S)
Mounting Hole Bolt Circle: 16mm or 19mm

Brushless Dc Motor 1400 KV For Quadcopter/ RC Motor

Rpm/V: 1400kv
Shaft: 3.17mm
Voltage: 2S~4S (7.4v to 14.8v)
Weight: 52g
Watts: 210w
Max Current: 21A
ESC: 30A
Suggested Prop: 8x4 (4S) ~ 10x7 (2S)
Mounting Hole Bolt Circle: 16mm or 19mm

Brushless Dc Motor 2200 KV For Quadcopter/ RC Motor

Rpm/V: 2200kv
Shaft: 3.17mm
Voltage: 2S~4S (7.4v to 14.8v)
Weight: 52g
Watts: 210w
Max Current: 21A
ESC: 40A
Suggested Prop: 8x4 (4S) ~ 10x7 (2S)
Mounting Hole Bolt Circle: 16mm or 19mm

Hot

BTS7960 Motor Driver Module 43A H-Bridge High-Power

Double BTS7960 large current (43 A) H bridge driver
5V isolate with MCU, and effectively protect MCU
5V power indicator on board
voltage indication of motor driver output end
can solder heat sink
Overvoltage lock up
Undervoltage shut-down
Overtemperature protection
Current limitation
Short-circuit protection
Just need four lines from MCU to driver module (GND. 5V. PWM1. PWM2)
isolation chip 5 V power supply (can share with MCU 5 V)
Able to reverse the motor forward, two PWM input frequency up to 25kHZ
two heat flow passing through an error signal output
isolated chip 5V power supply (can be shared with the MCU 5V), can also use the on-board 5V supply
the supply voltage 5.5V to 27V

DC Barrel Jack male and female with terminal block connector

Professional appearance for power cabling
Saves time with a more secure cable connection
Internal diameter of the plug: 2.1mm
External diameter of the plug: 5.5mm

DC Gear Motor for DIY Robotic Car - 10 RPM

Operating Voltage(V): 12
Rated Torque(kg-cm): 7
Stall Torque(kg-cm): 28

DC Gear Motor for DIY Robotic Car - 1000 RPM

Operating Voltage(V): 12
Rated Torque(kg-cm): 2
Stall Torque(kg-cm): 15

DC Gear Motor for DIY Robotic Car - 300 RPM

Operating Voltage(V): 12
Rated Torque(kg-cm): 4
Stall Torque(kg-cm): 15

DC Gear Motor for DIY Robotic Car - 45 RPM

Operating Voltage(V): 12
Rated Torque(kg-cm): 6
Stall Torque(kg-cm): 25

DC Gear Motor for DIY Robotic Car - 500 RPM

Operating Voltage(V): 12
Rated Torque(kg-cm): 3
Stall Torque(kg-cm): 15

DC Gear Motor for DIY Robotic Car - 60 RPM

Operating Voltage(V): 12
Rated Torque(kg-cm): 5
Stall Torque(kg-cm): 15

DC Worm Geared Motor High Torque 100 RPM 12V

Voltage: DC12V
Load torque: 10KG.CM
RPM: 100

DC Worm Geared Motor High Torque 200 RPM 12V

Voltage: DC12V
Load torque: 10KG.CM
RPM: 200

DHT11 Temperature and Humidity Sensor Module

Operating Voltage: 3.5V to 5.5V
Operating current: 0.3mA (measuring) 60uA (standby)
Output: Serial data
Temperature Range: 0°C to 50°C
Humidity Range: 20% to 90%
Resolution: Temperature and Humidity both are 16-bit
Accuracy: ±1°C and ±1%

DHT22 Digital Temperature and Humidity Sensor Module

Operating Voltage: 3.5V to 5.5V
Operating current: 0.3mA (measuring) 60uA (standby)
Output: Serial data
Temperature Range: -40°C to 80°C
Humidity Range: 0% to 100%
Resolution: Temperature and Humidity both are 16-bit
Accuracy: ±0.5°C and ±1%

Digital LDR Sensor Module Light Detection Module

LM393 based design.
Can detect ambient brightness and light intensity.
Adjustable sensitivity (via blue digital potentiometer adjustment).
Output Digital – 0V to 5V, Adjustable trigger level from preset.
LEDs indicating output and power.
Operating Voltage: 3.3V to 5V DC.
Operating Current: 15ma.

DIY Small Windmill DIY Small Production Stem Education

Wind Powered Car Kit.
Fully functional car that moves using the power of wind energy.
Perfect for budding engineers, science enthusiasts, and young inventors.
STEM-powered learning experience.

DIY Wind Turbine Car DIY Stem Education

Double Metal Shaft BO Motor for RC Car

Operating Voltage (VDC):3 ~ 6
No Load Current (mA):40-180mA.
Type: Brushed
Shaft :
- Type: Dual D
- Length (mm):8.7 & 9.3
- Diameter (mm):5.5
Gear:
- Material: Metal
- Ratio:1:90
Rated Speed After Reduction (RPM):110
Rated Torque (Kg-Cm):1

Hot

Double Shaft BO Motor for RC Car

Working voltage : 3V to 9V
30gm weight
Ability to operate with minimum or no lubrication, due to inherent lubricity.
1.9Kgf.cm torque
No-load current = 60mA, Stall current = 700mA

DS3231 High Precision Real Time Clock Module (RTC)

Accurate RTC manages all timekeeping functions
Battery-backup input for continuous timekeeping
Low power operation extends battery-backup run time
Breadboard-friendly 6-pin SIP header
Memory chip: AT24C32 (32K)
Operating voltage: 3.3 to 5.5 VDC
Communication: I2C bus, up to 400 kHz
Operating Temperature Ranges: Commercial (0°C to +70°C) and Industrial (-40°C to +85°C)
Accuracy from 0°C to +40°C: ±2ppm
Accuracy from -40°C to +85°C: ±3.5ppm

Electric Rim Door Lock 12V for Home/Office

12V Electric Lock
High Quality Stainless Steel Casing
Single Cylinder
Can change the direction of the oblique latch according to the door's opening direction
Anti-Theft, High Safety, electronic-Control, Key turning, manual unlocking, after-locking, prevention no-key-unlock and after closing door prevention dissembling lock indoors.
Applicable for houses , especially high building, office , schools , etc.

Electric Solenoid Lock 12v Cabinet Door Lock

Voltage: 12VDC
Current: 0.6A
Size: 53 x 26 x 23mm
Weight: 142g
Latch telescopic length: 10mm
Energized forms: intermittent
Unlocking time: 1S
Continuously energized <10S
Temperature: -40 ~ +50

Electromagnetic Lock 12V 280 Kgs Holding Force for Home/Office

Good quality and durable to use.
Corrosion resistant. Aluminum shell adopts high strength material, with hard anodised processing.
Use magnetic power to lock the door, 280kgs (600lbs) holding force.
Built-in reverse current protection device (MOV).
Can be opened by push button, remote controller, etc.
Fit for wooden door, metal door, glass door, fireproof door, etc.
Material: Aluminum Alloy
Plate size: 180x12x38mm
Voltage: DC 12V
Pull force: 280KG(600lbs)
Working mode: power-on to lock