Description
Reviews
| 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 |
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.
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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