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Feather nRF52840 Express
AdafruitnRF52840
The board features a variety of pins including GPIO, ADC, I2C, SPI, UART, and power/ground. The pinout diagram shows detailed labeling for each header pin.
In stock
Specifications
2- Operating Voltage
- 3.3V Volts
- Logic Level
- 3.3V Volts
Pinout
26| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | GND | GND | Ground |
| 2 | 3V3 | POWER | Supply voltage (3.3V) |
| 3 | A0 | ADC | Analog-to-Digital Converter |
| 4 | A1 | ADC | Analog-to-Digital Converter |
| 5 | A2 | ADC | Analog-to-Digital Converter |
| 6 | A3 | ADC | Analog-to-Digital Converter |
| 7 | A4 | ADC | Analog-to-Digital Converter |
| 8 | A5 | ADC | Analog-to-Digital Converter |
| 9 | D0 | GPIO | General Purpose Input/Output |
| 10 | D1 | GPIO | General Purpose Input/Output |
| 11 | D2 | GPIO | General Purpose Input/Output |
| 12 | D3 | GPIO | General Purpose Input/Output |
| 13 | D4 | GPIO | General Purpose Input/Output |
| 14 | D5 | GPIO | General Purpose Input/Output |
| 15 | D6 | GPIO | General Purpose Input/Output |
| 16 | D7 | GPIO | General Purpose Input/Output |
| 17 | D8 | GPIO | General Purpose Input/Output |
| 18 | D9 | GPIO | General Purpose Input/Output |
| 19 | D10 | SPI | Serial Peripheral Interface |
| 20 | D11 | GPIO | General Purpose Input/Output |
| 21 | D12 | GPIO | General Purpose Input/Output |
| 22 | D13 | GPIO | General Purpose Input/Output |
| 23 | SCL | I2C | Serial Clock (I2C) |
| 24 | SDA | I2C | Serial Data (I2C) |
| 25 | RX | UART | Receive (UART) |
| 26 | TX | UART | Transmit (UART) |
Interactive pinout
Highlight:
nRF52840
Click a pin to copy its name · tap a tag above to spotlight a bus.
Logic level & voltage
Operating voltage and logic level are 3.3 V (per the board specs); pins are not 5 V-tolerant. The nRF52840 provides BLE 5 and runs efficiently from a LiPo for low-power designs.
Typical uses
- Bluetooth Low Energy sensors and beacons
- Battery-powered CircuitPython projects
- Wireless HID and remote controls
Wiring notes & gotchas
- Use the JST LiPo input + onboard charger for battery operation.
- BLE antenna keep-out: avoid running wires/ground pours over the module antenna.
- Level-shift any 5 V peripherals.
Commonly used with
3Related parts
7Chip on this board
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