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Octopus 5mm LED Brick - Green
US$2.72
Octopus Electronic Bricks, you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play.
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Octopus Crash Sensor Brick
US$2.79
Octopus Electronic Bricks, you can use them to build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play. Crash Sensor Brick is a sensor module based on crash switch, simple circuit design, high sensitivity.
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Octopus 5mm LED Brick OBLED - Red
US$2.79
Octopus Electronic Bricks, you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play.  Octopus 5mmLED light Brick, and special sensors Arduino board and ambient light sensor extension combination, can be used in the interaction with the light works.
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Octopus 5mm LED Brick OBLED - Blue
US$2.79
Octopus Electronic Bricks, you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play.  Octopus 5mmLED light Brick, and special sensors Arduino board and ambient light sensor extension combination, can be used in the interaction with the light works.
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Octopus 5mm LED Brick OBLED - White
US$2.79
Octopus Electronic Bricks, you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play.  Octopus 5mmLED light Brick, and special sensors Arduino board and ambient light sensor extension combination, can be used in the interaction with the light works.
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Octopus Analog Photocell Brick OBPhotocell
US$2.93
Octopus Electronic Bricks, you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play.
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Octopus light sensor
US$3.21
Octopus Light Sensor Brick can read the light value of the current environment. Characteristics: The 3-pins ports is easy to plug and play. It can work with micro:bit in 3V.
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Octopus Passive buzzer Brick OBPB01
US$3.50
Octopus Electronic Bricks, you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos even buttons, just plug and play.  Octopus Passive buzzer Brick is based on a passive buzzer, it could control the volume by PWM. The distinction is active buzzer stickers.
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Octopus Analog Rotation Brick-Blue
US$3.54

Octopus analog rotation brick is a 10K potentiometer module. Rotating the knob to change its resistance can realize voltage division while providing analog signals to the analog input IO ports of micro-controller. This module has a 3-wire anti-reverse connector, which makes it easy to connect a GVS cable.

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Octopus Single RGB Rainbow LED
US$3.63
Octopus Single RGB Rainbow LED is one of the single rainbow LED electronic bricks in OCTOPUS series. The basic design is upon the OCTOPUS electronic bricks series with the identical design on the outlook, PCB fixed orifices and the connectors of the electronic bricks. The on-board LED is a smart LED and an integration of control circuit and light-emitting circuit, it can be operated under a low voltage with a high luminance and large angle scattering.
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Octopus Analog Noise Sound Sensor Detection Module
US$3.91
Octopus Analog Noise Sound Sensor Detection Module is a sensor module based on MIC sound sensing element. Sound Sensor is particularly sensitive to sound intensity, and it can be used to detect ambient sound level. Louder noise brings bigger output Sine wave amplitude.
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Octopus Water level sensor
US$4.06
Octopus Water level Sensor is the water level electric brick in our Octopus series, the basic design is from the Octopus electric bricks and the setting of its outlook, the PCB fixing hole and the connectors are the same. Octopus Water level electric brick is a simple, easy-to-use, high performance with reasonable prices sensor, the water level is detected by the exposed parallel wires and the water volume. It can convert the water volume to analog signal easily and the output value can be recognized by micro:bit and thus make the water level alarm happen.
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Octopus Soil Moisture Sensor Brick
US$4.19
Octopus Soil Moisture Sensor Brick can read the amount of moisture present in the soil surrounding it. It's a low tech sensor, but ideal for monitoring an urban garden, or your pet plant's water level. This is a must have tool for a connected garden!
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Octopus 3V laser sensor
US$4.19
Octopus 3V laser sensor is the laser emission electric brick in our Octopus series, the basic design is from the Octopus electric bricks and the setting of its outlook, the PCB fixing hole and the connectors are the same. It is made of a laser emission chip, condensing lens and an adjustable sleeve, which can work after powering on.
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Octopus Hunt Sensor
US$4.19
Octopus Hunt Sensor is a sensor based on TCRT5000 photoelectric sensitive element.It can sensitively detect the infrared reflected signal. Together with Arduino specific sensor shield, Hunt Sensor can be widely used in many fields, ranging from performing black and white line detection, obstacle detection , to shredding detection for fax machine or paper shredder, meter pulse data sampling and other related works Adjustable sensitivity (shown in blue digital potentiometer adjustment).
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Octopus Motor Brick
US$4.47
OCTOPUS Motor Brick is a type of simple electronic building blocks of the fan motor drive module, it can be used as simple Arduino teaching demo, convenient for  Arduino beginners to learn.
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Octopus Temperature Sensor Brick TMP36 Analog for Arduino Micro:bit
US$4.89
Octopus TMP36 Temperature Sensor Brick is a temperature sensor with low voltage and accurate celsius read. It can provide voltage output,which forms a linear relationship with celsius temperature. TMP36 do not need any external calibration. When it is at +25°C, its typical accuracy is ±1°C,while it is within the range from -40°C to +125°C, its typical accuracy is ±2°C.
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8 RGB Rainbow LED Ring
US$5.45

8 RGB Rainbow LED Ring is a kind of LED rings with 8 ultra bright RGB LED beads placed on a circle panel. This circle has 1.25" (32mm) outer diameter and 0.62" (16mm) inner diameter. The ring is chainable. On the circle panel, you can see one output pin of a bead connected to an input pin of another bead.

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EF02053 ELECFREAKS Basic:bit for micro:bit three way I/O expansion, mini version
US$5.59
Basic:bit is a basic breakout board of micro:bit. It carries a buzzer and three groups of GVS pins(P0/P1/P2) on board. Each group of GVS pins separately leads out the IO port, 3V port and GND port on micro:bit. Small size with simple structure, it is quite enough for you to complete 98% micro:bit projects.
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EF03410 Micro:bit Power Supply Module 3.3V 2A
US$5.59
Micro:bit Power Supply Module 3.3V 2A is a kind of power module for micro:bit. The output voltage of 3.3v can be connected directly to the battery connector of microbit, providing strong and steady power supply for micro:bit.
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EF03414 Elecfreaks edge:bit for micro:bit(edgebit)
US$6.01
Edge:bit is a breakout board for protecting your micro:bit golden finger. The special designed golden finger brings more convenience to micro:bit extension. But, at the same time, it is easily abraised or scratched by aligator clip. Edge:bit can provide an all-around protection for your micro:bit, which makes your micro:bit life span become much longer.
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EF03420, Christmas Tree Rainbow LED for micro:bit
US$6.14
The EF03420 is a small Christmas tree-shaped module with 6 codable LED lights. This small gadget is a fun and creative way to decorate a beautiful Christmas night.
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OCTOPUS 1Channel Relay
US$6.29
OCTOPUS 1Channel Relay is a single relay electronic brick，and its basic design is based on OCTOPUS series products, like shape, PCB positioning holes, interface setting. Adopting Ultra-small, high-quality HUIKE relay, OCTOPUS 1Channel Relay can control various appliances, load high-current, also with opto-isolation, secure and dependable, so Lovers of electronics DIY commonly used it as accessory module. The module is 5V high level trigger, and the trigger current is about 5mA, so almost all of MCU can directly drive it, pull-up not needed.
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EF04086 1 Channel Relay 3V Relay Module for Micro:bit
US$6.32
1 Channel Relay 3V Relay Module is one of OCTOPUS series of electric bricks. It is fundamentally designed according to OCTOPUS electric brick series with same shape, PCB positioning holes and electric brick connectors. OCTOPUS 1 Channel Relay has adopted a mini and high-quality HUIKE relay, which is available to control all kinds of home appliances and high current load devices. This is a common accessory module for electronic DIY fans.
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Rainbow LED Strip for ring:bit car v2
US$6.35

Ring:bit car V2 lights-bar module is the dedicated module which designed for Ring:Bit Car V2. It brings you beautiful mutiple color with simple assemble. Come with 8 Rainbow full color LEDs. You can update your ring:bit car to a car with headlights and rainbow lights.

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Octopus MQ3 Alcohol Sensor Brick
US$6.81

Octopus MQ3 Alcohol Sensor Brick is an alcohol-based sensor:< Q3.

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Tracking Module for ring:bit car v2
US$6.99
Ring:bit car V2 line following module is a dedicated module designed for the Ring:bit car V2, it is easy to be installed to achieve the line following function for the Ring:bit car V2. Equipped with double infrared probes, it can detect the distance between 2~12mm accurately that can achieve the function of line following around the circles, the detection of the black lines and the detection of the edge.
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Octopus PIR Sensor Brick
US$6.99
OCTOPUS PIR Sensor module is a type of electronic building block based on AM412 pyroelectric digital smart sensor. It can be used in sensing and detection of human or animal motion, sensing distance is about 4-5 meters.
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Octopus ADKeypad
US$6.99
Octopus Electronic Bricks, you can use them to build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino / Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos ... even buttons, just plug and play. This keyboard uses an analog input to read the five key state which saves IO resource for the Arduino. It can be used together with our I/O expansion boards to make amazing interactive project.
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Neopixel Rainbow LED strip and GVS conector -10 LEDs
US$6.99
This is a colorful strip based on WS2812B beads, it can display the color of RGB and support multiple cascade at the same time.
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Octopus Analog Capacitive Soil Moisture Sensor
US$7.23
Octopus Analog Capacitive Soil Moisture Sensor is the soil moisture electric brick in our Octopus series, the basic design is from the Octopus electric bricks and the setting of its outlook, the PCB fixing hole and the connectors are the same. Adopted the capacitive sensing principle to detect the soil moisture, it perfectly avoids the problem of easy to be corroded of the resistive transducer and greatly extends its service time.
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EF09087 Geekservo Motor compatible with Lego
US$7.96
The motor protects itself from exaggerated strength by "jumping over teeth" protection. It can be programmed by MakeCode, JavaScript, microPython, C++.
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