Nice Keyboards · nRF52
nice!nano v2
The keyboard-builder's board: Pro Micro footprint, nRF52840 and a LiPo charger make it the go-to for wireless ZMK keyboards.
BLEThread/Zigbee3.3 V logicBreadboard
Typical price
$25
Clones from about $12
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Specifications
| Maker | Nice Keyboards |
|---|---|
| Chip | nRF52840 |
| CPU | Arm Cortex-M4F |
| Clock speed | 64 MHz |
| Wi-Fi | None |
| Bluetooth | Bluetooth 5 (LE) |
| Zigbee / Thread radio | Yes (802.15.4) |
| GPIO pins | 18 usable |
| ADC | 6 channels, 12-bit |
| DAC | None |
| Flash | 1 MB |
| RAM | 256 KB |
| Logic level | 3.3 V |
| Power input | 3.7–5V / LiPo |
| Deep sleep (typ.) | ~20 µA |
| Active current (typ.) | ~12 mA |
| Form factor | Breadboard |
| USB | USB-C |
| Programming | Zephyr (ZMK), Arduino, CircuitPython |
| Released | 2020 |
Typical values. Sleep current is approximate; whole-board numbers are higher than the bare chip's datasheet figure.
Pros
- Pro Micro footprint with a built-in charger
- Great battery life in ZMK keyboards
- UF2-style bootloader
Cons
- Niche: less documentation outside keyboard projects
- Pricey, with many clones
- No Wi-Fi, limited GPIOs
Best use cases
- 01Wireless split keyboards (ZMK)
- 02BLE HID devices
- 03Low-power remote controls
- 04Compact BLE peripherals
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