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  • Model: HC-SR04
  • Color: Blue + Silver
  • Working voltage : 5V(DC)
  • Static current: Less than 2mA.
  • Output signal: Electric frequency signal, high level 5V, low level 0V.
  • Sensor angle: Not more than 15 degrees.
  • Detection distance: 2cm~450cm.
  • High precision: Up to 3mm
RM3.40
  • Microcontroller: Atmel ATmega328
  • Operating Voltage (logic level): 5 V
  • Input Voltage (recommended): 7-12 V
  • Input Voltage (limits): 6-20 V
  • Digital I/O Pins: 14 (of which 6 provide PWM output)
  • Analog Input Pins: 8
  • DC Current per I/O Pin: 40 mA
  • Flash Memory: 32 KB (ATmega328) of which 2 KB used by bootloader
RM10.90
  • Value: 1, 10, 100, 1k, 10k, 100k, 1M ohm (Select in option)
  • Watt: 0.25 Watt
  • Tolerance: 5%
  • Type: Carbon film
RM1.00
  • 5mm round head general use LED
  • Class A grade
  • Constant luminous
  • Available in red, yellow, blue, green, white, purple color
  • Can direct drive by Arduino
RM1.00
  • 830 Tie Point
  • Self adhesive
  • Can be interlocked for larger projects
  • 2 power lanes
  • Horizontal: 1-60
  • Vertical: A-J
  • Dimensions: 15.5cm x 5.5cm
RM5.80
  • High-quality Plastic Holder
  • Small size, easy to carry
  • Embossed battery polarity marks
  • Mounting screw point
RM1.50
  • 14 digital I/O pins (six of which provide PWM output)
  • 3.3 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
  • Code example from Arduino website to help get started
RM24.90
  • Brand new and high quality
  • Full range resistance value
  • Resistance tolerance: 20%
  • Size: 25(L)x17(W)x24(H) cm
  • Weight: 6g
RM0.90
  • High-quality Plastic Holder
  • Small size, easy to carry
  • Embossed battery polarity marks
  • Mounting screw point
RM0.60
  • Color: Black, White, Red, Yellow, Blue, Green
  • 170 Tie Point
  • Self adhesive
  • Can be interlocked for larger projects
  • Horizontal: 1-17
  • Vertical: A-J
  • Dimensions: 3.5cm x 4.7cm
RM1.90
  • Based on ESP-12E ESP8266 wifi board
  • All I/Os output
  • No need to press reset/flash for pgoramming
  • Lolin NodeMCU V3 version has CH340 USB-TTL converter
  • Larger current support
  • Supports windows 7/8/10 by CH340, and supports ESPlorer
RM20.50
  • Dimension: 23×12.2x29mm
  • Stall torque: 1.8kg/cm(4.8v)
  • Gear type: POM gear set
  • Operating speed: 0.1sec/60degree(4.8v)
  • Operating voltage: 4.8v
  • Temperature range: 0?_ 55?
  • Dead band width: 1us
  • Weight: 9g
RM5.90
  • Connetor Type: Dupont 1p Male to Male
  • Pitch: 2.54mm
  • Jumper Length: 10cm
  • Number of point: 40x1p
RM3.80
  • 400 Tie Point
  • Self adhesive
  • Can be interlocked for larger projects
  • 2 power lanes
  • Horizontal: 1-30
  • Vertical: A-J
  • Dimensions: 8.2cm x 6.2 cm (3.2in x 2 in)
RM3.40
  • Sensor Type: Infrared
  • Voltage: 3.3 - 5VDC
  • Current: 45mA (5V)
  • Detection Distance: 2 - 30cm (adjustable with potentiometer)
  • Size: 32x14mm
  • Weight: 3g
RM3.90