Moduł nRF52840 SuperMini Bluetooth 5 Zigbee USB-C Pro Micro do Arduino ZMK

nRF52840 SuperMini Module for Arduino

Ultra-low-power development module based on the advanced nRF52840 chip. The board offers native support for Bluetooth 5.0, Zigbee, and Thread. It features an integrated lithium battery charging management circuit. Its compact dimensions and pin layout make the module fully compatible with Nice! Nano V2.0 and the Pro Micro form factor.

Key Technical Features

• Wireless connectivity: native support for Bluetooth 5.0 LE, Zigbee/Thread (IEEE 802.15.4) and 2.4 GHz protocols.
• High-performance processor: ARM Cortex-M4 chip with FPU running at 64 MHz.
• Memory: 1MB Flash memory and 256KB RAM.
• Integrated antenna: on-board antenna providing a stable connection at a range of up to 15 meters.
• Communication interfaces: access to 21 GPIO ports, ADC, PWM, I2C, SPI, and UART.
• Power management: built-in charging controller for 3.7V Li-Po/Li-Ion batteries, charging via USB-C connector.
• Power-saving modes: System OFF mode support (equivalent to deep sleep) - current draw from 0.4 µA at 3V.
• Dimensions: 33 x 17.8mm

Benefits

• Ability to build fully mobile devices with long battery life on a single charge.
• Direct replacement for Pro Micro form factor modules with additional wireless features.
• Easy firmware flashing thanks to a preinstalled bootloader.
• Full compatibility with Arduino IDE and ZMK Firmware.
• Ready to support advanced wireless protocols without the need for external chips.

Example Applications

• Wireless mechanical keyboards based on ZMK or BlueMicro firmware.
• HID control devices such as wireless mice and game controllers.
• Compact IoT sensors with very low power consumption.
• Smart wearable devices and smart gadgets.
• Components of home automation systems using the Zigbee or Thread protocol.

Technical Specifications and Power Supply

The module operates at a logic voltage of 3.3V. Applying 5V directly to the I/O pins will permanently damage the microcontroller. Main power can be supplied via the USB-C connector or directly from a 3.7V Li-Po battery connected to the dedicated B+ and B- pads. The board has a VCC output providing 3.3V and an external voltage input RAW.

Configuration and Programming

Programming is done via the USB-C connector. The board enters bootloader mode by quickly shorting the RST pin to ground (GND) twice. After this operation, the module appears in the system as a removable drive. Arduino IDE support requires installing the Adafruit nRF52 microcontroller support package. For wireless keyboard projects, the board is ready to work in the ZMK environment as an equivalent of the nice_nano_v2 model.