Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller Unit	Nordic NRF52840
Processor Core	ARM Cortex-M4F
Clock Speed	64 MHz
Flash Storage	1 MB
Random Access Memory	256 KB
Wireless Protocol	Bluetooth 5.0 Low Energy
USB Standard	USB 2.0 Full Speed
Logic Voltage	3.3V
Power Input	3.3V - 5V DC
Board Dimensions	33 x 18 x 8 mm

5 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Arduino Compatible

Flashed via Arduino IDE without issues using the Adafruit nRF52 board package. Great for prototyping IoT devices.

Anonymous

Mar 27, 2026

Rating: 4/5

Great Specs, Tricky Soldering

Works well but the pins are close together. Make sure you have a fine tip soldering iron. Performance is excellent once installed.

Anonymous

Feb 27, 2026

Rating: 5/5

Ideal for ZMK Keyboards

Replaced my old ProMicro with this for a wireless mechanical keyboard build. The ZMK firmware flashed easily and the Bluetooth connection is very stable.

Anonymous

Feb 02, 2026

Rating: 5/5

Better than Nice!Nano

More accessible pins for my specific case design. Functionality is identical to the nice!nano V2.0 but easier to source.

Anonymous

Jan 31, 2026

Rating: 5/5

Stable Bluetooth Connection

Pairing is quick and reliable. I am using this for a custom HID project and haven't experienced any dropouts so far.

5 FAQ

Q: Is 5V input safe for the GPIO pins?

A: No, the logic level is 3.3V. Please use level shifters if interfacing with 5V devices to avoid damage.

Q: Can I connect a LiPo battery directly?

A: Yes, there is a JST PH 2.0 connector for LiPo batteries with built-in charging management.

Q: Where is the reset button located?

A: The reset button is located on the backside of the board near the USB connector.

Q: Does this board support QMK firmware?

A: Yes, this board supports QMK via USB connection. For wireless functionality, ZMK firmware is recommended.

Q: Do I need to install specific drivers?

A: It uses a UF2 bootloader, so it appears as a mass storage device. No specific drivers are needed for most OS.

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