M5StickC PLUS2 Mini IoT Development Kit - Compact ESP32-PICO V3

In this review of the M5StickC PLUS2 the bottom line is simple: it is a compact, well-rounded mini development kit for makers and learners who need WiFi-enabled prototyping in a tiny form factor. The reviewer found the device especially useful for wearable or wall-mounted projects because of its built-in 1.14 in color TFT display, IMU, microphone and infrared transmitter, all powered by an upgraded ESP32-PICO-V3-02 CPU. For anyone wanting a small, ready-to-go single board computer with broad accessory support, the M5StickC PLUS2 is an attractive option.

Key Features

• ESP32-PICO-V3-02 CPU: Provides built-in WiFi and a modern controller that handles networking and real-time tasks reliably for IoT projects.
• 1.14 in TFT display: The 135x240 ST7789V2-driven screen makes on-device status, menus and simple graphics readable in a very small footprint.
• Built-in sensors and I/O: Integrated 6-axis IMU, microphone, IR transmitter, green LED and buzzer let developers prototype motion, audio and remote-control features without extra modules.
• Battery and mobility: The 200mAh lithium polymer battery increases run time compared with earlier models and supports wearable or portable use.
• Expandability: The USB Type-C port and GROVE port (I2C + I/O + UART) plus HAT and Unit family support make it easy to add sensors and displays for larger projects.
• Controls: Three custom buttons provide convenient input for menus, calibration and user interaction on compact projects.

Who It's For

The M5StickC PLUS2 is best for hobbyists, students and developers who want a tiny, feature-rich platform for IoT, wearable proofs of concept or small wall-mounted controllers. Its integrated display, sensors and WiFi support mean many projects can be built without extra breakout boards.

Those building large-scale production devices that need long battery life, large displays or extensive peripheral interfaces should look elsewhere; the 200mAh battery and compact I/O are ideal for prototypes and demos but may be limiting for power-hungry, field-deployed products.

Pros & Cons

Pros

• Excellent integration of display, IMU, microphone and IR in a tiny board for quick prototyping.
• Upgraded ESP32-PICO-V3-02 CPU provides dependable WiFi and processing capability.
• Grove port and HAT/Unit compatibility make expansion and accessory use straightforward.
• Compact wearable design and a larger 200mAh battery than earlier models improve portability.

Cons

• Battery capacity is modest at 200mAh, so run time is limited for continuous wireless use.
• Small screen and limited native I/O may require additional modules for more complex applications.

Specifications

Controller	ESP32-PICO-V3-02
Display	1.14 in TFT, 135x240, ST7789V2
Battery	Built-in 200mAh lithium polymer
Sensors & Peripherals	6-axis IMU, microphone, IR transmitter, green LED, buzzer
Buttons	3 custom buttons
Ports	USB Type-C, GROVE (I2C + I/O + UART)

Our Verdict

The M5StickC PLUS2 is a compact and versatile mini IoT development kit ideal for beginners and makers who value integrated hardware and easy expandability. It delivers strong functionality in a tiny package and is good value for prototyping wearable or wall-mounted projects, though projects needing long battery life or extensive native I/O may require other platforms.

Frequently Asked Questions

Does the M5StickC PLUS2 have WiFi?
The board uses the ESP32-PICO-V3-02 controller which includes built-in WiFi functionality for networked projects.

Can I add sensors or extensions?
Yes, it supports the GROVE port (I2C + I/O + UART) and the HAT and Unit families for easy expansion with sensors and modules.

Is the battery replaceable?
The device includes a built-in 200mAh lithium polymer battery designed for portability; it is not intended as a hot-swappable replaceable pack.