An ESP32-based micro:bit clone is a micro:bit-style educational or maker board built around an ESP32 chip. The term describes a family of boards—not one uniquely defined product—and does not guarantee that a board runs the official micro:bit MakeCode target or works with every micro:bit accessory. Two reported examples are Banana Pi BPI:bit and Elecrow Mbits.
What does “ESP32-based micro:bit clone” mean?
These boards borrow the compact, classroom-friendly idea of the BBC micro:bit: a small programmable board with familiar controls and, in some models, an LED display and sensors. Their central processor is from Espressif’s ESP32 family rather than the Nordic processor used in the official micro:bit. The exact hardware, software support, connector and capabilities depend on the specific board and revision.
“Clone” is therefore a description of style or intended role, not proof of official compatibility. Similar appearance does not establish that micro:bit programs, accessories, classroom materials or update procedures will transfer unchanged.
Which ESP32 micro:bit-style boards have been reported?
Banana Pi BPI:bit
Hackster.io described BPI:bit as using an ESP32-WROOM-32 module and including 25 programmable LEDs, two user-programmable buttons, two light sensors, a thermistor, an InvenSense MPU-9250 nine-axis IMU and a buzzer. The article also listed Wi-Fi and Bluetooth LE, and software routes including Webduino, PlatformIO, Scratch X, Arduino and custom MicroPython firmware. These are reported product details; confirm the board revision and current firmware documentation before relying on a particular feature or workflow. Hackster.io
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- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Support LWIP protocol, Freertos
- SupportThree Modes: AP, STA, and AP+STA
- Ultra-Low power consumption, Compatible with Arduino IDE
- ESP32 is a safe, reliable, and scalable to a variety of applications
The same report gave dimensions of 50 × 50 mm, compared with 50 × 40 mm for the micro:bit, and described a 20-pin sewable edge connector. Those dimensions and connector details do not by themselves establish matching pin behavior or accessory fit. The article’s reported $19.50 price plus shipping was historical, not a current price or availability claim. Hackster.io
Elecrow Mbits
A 2021 CNX Software comparison described Elecrow Mbits as a micro:bit V2-like design using an ESP32 instead of Nordic’s nRF52833. It reported 8 MB RAM and 4 MB storage for Mbits, versus 128 KB RAM and 512 KB storage for micro:bit V2. These figures are article-reported specifications, not an independently verified current specification sheet or a performance benchmark. Memory capacity alone does not establish how quickly a board runs a particular project. CNX Software
Rank #2
- Dual-Core Performance Up to 240 MHz: Run sensor processing, wireless communication, automation logic and connected-device tasks on a 32-bit dual-core ESP32 platform designed for responsive embedded and IoT projects
- Built-in Wi-Fi and Bluetooth 4.2: Connect to 2.4 GHz Wi-Fi networks or use Bluetooth Classic and BLE for wireless sensors, smart devices, remote controls, home automation and other connected projects
- Flexible Power-Saving Modes: ESP32 power-management features support dynamic clock scaling and low-power operating modes, helping developers reduce energy use in compatible sensing, monitoring and connected-device applications, suitable for battery-powered Internet of Things (IoT) devices.
- USB-C Programming with CP2102: Connect through USB-C for power, sketch uploads and serial monitoring, while GPIO, UART, SPI and I2C interfaces support sensors, displays, motor drivers and other modules (USB-C cable not included)
- Over-the-Air Update Support: Configure OTA functionality through a compatible ESP-32 software framework to update deployed firmware over Wi-Fi without reconnecting the board by USB for every revision
How do these boards compare with the official micro:bit?
The official micro:bit is not just a processor attached to a display. The Micro:bit Educational Foundation describes it as a single-board computer with an application processor and a separate interface processor. That interface processor handles USB communications, including drag-and-drop flashing, and does not connect to the board’s peripherals. The Foundation publishes hardware documentation and schematics for micro:bit revisions. Micro:bit hardware documentation Micro:bit schematics
The Foundation’s reference design illustrates how specific compatibility can be: it says that design is 100% binary compatible with micro:bit while using an nRF51 module rather than the chip directly on the board. That statement applies to the documented reference design; it is not evidence that an ESP32 board has equivalent compatibility. Micro:bit reference design
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- High-performance dual-core processor – ESP32S is equipped with a powerful dual-core 32-bit CPU with a main frequency of up to 240MHz, providing smooth and efficient computing power for IoT and embedded applications.
- Wi-Fi & Bluetooth dual-mode support – Integrated 2.4GHz Wi-Fi and low-power Bluetooth, supporting wireless data transmission, remote control and smart device connection.
- Rich interfaces and functions – Provides GPIO, UART, SPI, I2C and other interfaces, supports touch sensing, infrared remote control, DAC and other functions, suitable for a variety of electronic projects.
- Low-power design – With multiple power saving modes, supports deep sleep and ultra-low power operation, suitable for battery-powered Internet of Things (IoT) devices and remote monitoring systems.
- Compatible with multiple development environments – Supports for Arduino IDE, for ESP-IDF, for MicroPython and for PlatformIO, easy to develop, suitable for beginners and advanced developers to quickly build smart applications.
Even official micro:bit revisions differ in supported features. Microsoft MakeCode documents microphone, speaker and capacitive logo-touch blocks as V2 features, and says V2 blocks do not work on V1 boards. A look-alike ESP32 board should not be assumed to support those blocks or the official MakeCode micro:bit target without model-specific documentation. MakeCode micro:bit V2 documentation
Can an ESP32 micro:bit clone run MakeCode?
Not on the evidence of appearance or an ESP32 chip alone. MakeCode support is a matter of the specific board target, firmware and supported hardware—not merely whether the board has buttons and LEDs. BPI:bit’s reported software options include Scratch X, but that does not establish support for Microsoft MakeCode’s official micro:bit target. Check the board maker’s documentation for an explicit MakeCode target and instructions for the exact revision before choosing it for a MakeCode-based course.
Rank #4
- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Support LWIP protocol, Freertos;ESP32 is a safe, reliable, and scalable to a variety of applications
- SupportThree Modes: AP, STA, and AP+STA
- Ultra-Low power consumption, Compatible with Arduino IDE
- 1PCS 30Pin ESP32 Development Board 2.4GHz WiFi Dual Cores Microcontroller Integrated with Antenna RF Low Noise Amplifiers Filters
Likewise, micro:bit V2’s microphone, speaker and touch-logo blocks should not be presumed to map to similarly named hardware or code on a clone. The official MakeCode documentation specifically treats those blocks as revision-dependent even within the micro:bit family. MakeCode micro:bit V2 documentation
Will micro:bit code and accessories work?
Do not assume either. Software may rely on a particular board target, peripheral arrangement, runtime or firmware, so a project may need to be rewritten or adapted for the ESP32 board’s supported environment. Hardware compatibility is also model-specific: compare connector geometry, pinout, voltage and power requirements, and the electrical behavior of each pin against the accessory documentation. A 20-pin edge connector, for example, does not by itself prove that an existing micro:bit breakout is electrically compatible.
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- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Ultra-Low power consumption, works perfectly with the Arduino IDE
- Support LWIP protocol, Freertos
- SupportThree Modes: AP, STA, and AP+STA
- ESP32 is a safe, reliable, and scalable to a variety of applications
Before reusing classroom projects or hardware, identify the exact board revision and check its pinout, power input, firmware and editor instructions. If those details are not documented, treat compatibility as unestablished rather than risking a mismatched connection or a project that cannot be flashed.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to decide whether one is right for a project
- Choose for the software workflow first. If a class depends on the official MakeCode micro:bit target, confirm that the exact ESP32 board has a documented target and supported blocks. Otherwise, the official micro:bit is the more direct fit for that workflow.
- Choose an ESP32-style board for its documented capabilities. BPI:bit was reported with Wi-Fi and Bluetooth LE alongside LEDs, sensors and a buzzer; confirm those features for the specific revision and environment you plan to use.
- Audit existing hardware before connecting it. Verify the connector, pin assignments, voltage and power arrangements for every accessory rather than relying on the “micro:bit-style” label.
- Compare support, not only memory. Check the current manuals, firmware, editor support, example projects and classroom resources. The cited Mbits memory comparison is from a 2021 article and does not establish current availability or real-world speed.
- Check present-day stock and price directly. The cited BPI:bit price is historical, and current seller inventory and prices for the named examples are not established here.
Firmware and flashing are not automatically interchangeable
The official micro:bit firmware guide says a micro:bit works with its shipped firmware and recommends updating only when needed for a feature or troubleshooting. It identifies WebUSB direct flashing as a feature introduced in interface firmware version 0247. That guidance concerns official micro:bit firmware; it should not be applied to an ESP32 clone, whose firmware and flashing process must be checked in its own documentation. Micro:bit firmware guide
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