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ElecFreaks IoT results here are centered on BBC micro:bit projects, usually using the IoT:bit (ESP8266 WiFi) expansion board.
Core ElecFreaks IoT (WiFi) board
- iot:bit for micro:bit ($20.85) — the key add-on that provides ESP8266 WiFi and breaks out micro:bit I/O for sensor/actuator projects.
Full ElecFreaks IoT learning kits (project bundles)
- micro:bit smart science IoT kit (with micro:bit) ($126.85) — complete bundle for science + IoT data projects.
- Micro:Bit smart Science IoT kit (without Micro:Bit) ($126.85) — same idea, but for classrooms that already have micro:bits.
- micro:bit Smart City Kit (Without micro:bit board) ($69.10) — smart-city themed builds (sensors/servos) around IoT:bit.
- micro:bit Smart Agriculture Kit (Without micro:bit board) ($75.10) — agriculture monitoring/control projects using IoT:bit + common environment sensors.
Classroom/Scenario IoT kits (guided builds)
- ELECFREAKS Classroom Smart Home Kit ($59.05) — smart-home demo builds using IOT:bit, sensors, servo, LED, and OLED.
- ELECFREAKS Classroom Smart Air Purifier Kit ($43.75) — air-quality themed build using IOT:bit + fan + dust sensing.
- ELECFREAKS Classroom Smart Pet Feeder Kit ($54.00) — feeder automation with IOT:bit, PIR motion sensing, sonar, and servo control.
- ELECFREAKS micro:bit Smart Greenhouse Kit ($64.70) — smart-agriculture/greenhouse style classroom kit based on micro:bit + IoT expansion.
- ELECFREAKS micro:bit Smart Climate Kit, designed based on micro:bit V2 and IOT:bit expansion board ($136.00) — more advanced climate monitoring focused on micro:bit V2 + IOT:bit.
Related ElecFreaks IoT add-ons
- Sensor WiFi ELECFREAKS PlanetX ($14.15) — a lower-cost way to add ESP8266-based WiFi capability for micro:bit projects.
- Octopus Analog Noise Sound Sensor Detection Module ($6.15) — a common input sensor used in smart-home style IoT builds.
Which ElecFreaks IoT option are you looking for?
Collections
Showing 1-20 of 60 products
ELECFREAKS micro:bit Nezha Pro AI Mechanical Power Kit
MPN: EF08437
Smart AI Lens kit for Micro:bit
Octopus Non-invasive AC current sensor TA12-100 Brick
ELECFREAKS micro:bit Nezha Pro Ocean Kit
MPN: EF08436
ELECFREAKS Classroom Smart Air Purifier Kit
1 Channel Relay 3V Relay Module for Micro:bit
ELECFREAKS micro:bit Petal Smart Home Explorer Kit
Sensor WiFi ELECFREAKS PlanetX
MPN: EF05036
ELECFREAKS Mechanical Catch (Use With Cutebot)
ELECFREAKS Knight Truck
ELECFREAKS PlanetX LED - Green
MPN: EF05010
micro:bit smart coding kit（without micro:bit)
Octopus MQ3 Alcohol Sensor Brick
Octopus Passive buzzer Brick OBPB01
ELECFREAKS Wukong2040 Breakout Board For Raspberry Pi Pico
360 Digital Servo (EF90D) with wheel and tire
2 Channel 12V Relay Module
Octopus Button Switch Brick OBButton
ELECFREAKS Classroom Smart Home Kit
Octopus Water level sensor
ELECFREAKS micro:bit Nezha Pro AI Mechanical Power Kit
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The ELECFREAKS micro:bit Nezha Pro AI Mechanical Power Kit is designed specifically for teenagers aged 7-14. With the Nezha Pro Expansion Board as its core, it is equipped with multiple sensors, such as a voice recognition module and a gesture recognition sensor, along with over 500 building bloc...
Smart AI Lens kit for Micro:bit
The Smart AI Lens kit for micro:bit brings machine vision and AI capabilities to your classroom or maker project. Powered by a K210 processor, the AI Lens camera module can recognise faces, track objects and colours, identify pattern cards, and even learn to recognise custom objects with a single...
Octopus Non-invasive AC current sensor TA12-100 Brick
The Octopus TA12-100 is a non-invasive AC current sensor brick from ElecFreaks. It uses a current transformer to measure AC current flowing through a wire without needing to cut or splice the circuit — simply clamp it around the conductor. The sensor outputs an analogue voltage proportional to th...
ELECFREAKS micro:bit Nezha Pro Ocean Kit
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The ELECFREAKS micro:bit Nezha Pro Ocean Kit is an ocean-themed STEM education kit that guides students through Ian's ocean adventure storyline with a project-based learning approach. Using electronic components and building blocks, students explore marine ecology, understand concepts like tidal ...
ELECFREAKS Classroom Smart Air Purifier Kit
The ELECFREAKS Classroom Smart Air Purifier Kit includes components such as the IOT: bit expansion board, motor fan, and dust sensor. These components can achieve rich functions and perfectly match with the micro: bit development board, allowing you to explore more interesting smart homemaker ...
1 Channel Relay 3V Relay Module for Micro:bit
A single-channel 3 V relay module from the ElecFreaks OCTOPUS series, designed for use with the BBC micro:bit. It uses a high-quality HUIKE relay capable of switching loads up to 30 A, making it suitable for controlling home appliances and other high-current devices. The module runs on 3 V power...
ELECFREAKS micro:bit Petal Smart Home Explorer Kit
Description The ELECFREAKS micro:bit Petal Smart Home Explorer Kit is a hands-on learning suite designed for teenagers aged 8-16. Using sensors, servobs, and assemblable structural components enables the construction of life-oriented devvices like smart lighting, automatic cloth...
Sensor WiFi ELECFREAKS PlanetX
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The Elecfreaks PlanetX WiFi Sensor adds wireless connectivity to your micro:bit projects via the ESP8266 module. Upload sensor data to IoT platforms, monitor readings remotely, and send commands back to your micro:bit — all over Wi-Fi. Connects to the Elecfreaks Nezha expansion board via the RJ1...
ELECFREAKS Mechanical Catch (Use With Cutebot)
ELECFREAKS Mechanical Catch (Use With Cutebot) is a gripper that uses an SG92R servo as a power source. The servo uses a PWM signal to drive the gripper gear to rotate and control the gripper for clamping and releasing operations. The structure adopts a design compatible with Lego 8mm round holes...
ELECFREAKS Knight Truck
The ELECFREAKS Knight Truck is a buildable robotics kit that can be assembled into multiple different robot configurations. The modular construction system is compatible with LEGO bricks, allowing you to combine standard building pieces with electronic components for custom designs. The kit supp...
ELECFREAKS PlanetX LED - Green
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A green LED module from the ELECFREAKS PlanetX sensor range, designed for use with micro:bit and the Nezha expansion board. The RJ11 connector makes it simple to plug in — no soldering or breadboard required. Control brightness via analogue input, create flashing patterns, or combine with other ...
micro:bit smart coding kit（without micro:bit)
The Elecfreaks Smart Coding Kit lets you build a programmable DIY smartwatch powered by the BBC micro:bit. Using the included Power:bit extension board and nylon watch strap, you can assemble a wearable device that runs your own code — created in MakeCode or Scratch. The Power:bit board runs on ...
Octopus MQ3 Alcohol Sensor Brick
The Octopus MQ3 Alcohol Sensor Brick from ElecFreaks is an analogue gas sensor module with high sensitivity to alcohol vapour. It outputs an analogue voltage proportional to the detected alcohol concentration, making it straightforward to interface with Arduino and other microcontrollers. The MQ...
Octopus Passive buzzer Brick OBPB01
The Octopus Passive Buzzer Brick is a plug-and-play buzzer module from the Elecfreaks Octopus series. Unlike an active buzzer, the passive design lets you control both tone and volume via PWM, making it ideal for generating melodies, alarms, and sound effects. Part of the Octopus Electronic Bric...
ELECFREAKS Wukong2040 Breakout Board For Raspberry Pi Pico
DescriptionWukong 2040 is a multifunctional Breakout Board designed for Raspberry Pi Pico. In terms of functions, it is equipped with a buzzer, A\B buttons, rainbow lights, motor interface, reset button, etc., to meet the needs of creators for IO programming and peripheral expansion. In terms of ...
360 Digital Servo (EF90D) with wheel and tire
The ElecFreaks EF90D is a compact 360-degree continuous rotation digital servo designed for use with the BBC micro:bit. It operates at 3V, making it well-suited for micro:bit-powered robotics and motorised projects. The included wheel and tyre let you get moving straight away. Key Features 360...
2 Channel 12V Relay Module
The 2-Channel 12V Relay Module allows you to control two high-power devices independently using low-voltage signals from a microcontroller such as Arduino. Each channel features an optocoupler-isolated relay with normally open (NO) and normally closed (NC) terminals for flexible switching configu...
Octopus Button Switch Brick OBButton
The Octopus Button Switch Brick is a simple, plug-and-play pushbutton module from the ElecFreaks Octopus Electronic Bricks series. It features a large button with a transparent cap — you can insert a custom label underneath for easy identification in your projects. Designed for breadboard-free c...
ELECFREAKS Classroom Smart Home Kit
The Classroom Smart Home Kit includes components such as an IOT:bit expansion board, crash sensor, 180-degree servo, rainbow LED, noise sensor, light sensor, and OLED display. These components enable a wealth of functionality and work perfectly with the micro:bit board, allowing you to explore mo...
Octopus Water level sensor
The Octopus Water Level Sensor detects water level using exposed parallel traces on the PCB. As the water level rises, more traces are submerged, producing a higher analogue signal output. Compatible with micro:bit (3 V) and other microcontrollers operating at 3–5.5 V. Part of the ElecFreaks Oct...
