BoardPilotDHT22 with Nordic nRF52840 DK
Wiring for the DHT22 (AM2302) temperature + humidity on the Nordic nRF52840 DK (nRF52840-QIAA, 3.3 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.
Wiring
| DHT22 pin | Role | Nordic nRF52840 DK pin | Notes |
|---|---|---|---|
| VCC | Power | 5V | |
| DATA | One-wire data | P1.03 | Needs a 10 kΩ pull-up (included on 3-pin modules) |
| GND | Ground | GND |
Check before you power it on
- Supply: 5 V from the 5V pin.
Test code (Arduino)
The Arduino core for this board numbers its pins differently from the chip names, so no code is shown here. Use the pin names from your core’s variant file.
Arduino board: adafruit:nrf52:pca10056. Plug USB into the port on the short edge (interface MCU, J2) and set the power switch to ON; before the first Arduino sketch, burn the Adafruit bootloader and SoftDevice once.
Questions
Which Nordic nRF52840 DK pins do I use for the DHT22?
VCC → 5V, DATA → P1.03, GND → GND.
Does the DHT22 work with the Nordic nRF52840 DK at 3.3 V?
Yes: the DHT22 runs at 3.3-5 V and the Nordic nRF52840 DK uses 3.3 V signals, so no level shifting is needed.
BoardPilot checks this wiring in 3D as you build it, and finds crossed or missing wires on the real board.
Download BoardPilotFull Nordic nRF52840 DK pinout · DHT22 (AM2302) temperature + humidity: all pins and data
The DHT22 on other boards
ESP32 DevKit Arduino Mega 2560 R3 Arduino Nano Arduino Uno R3 WeAct Black Pill STM32F411CE ESP32-C3-DevKitM-1 ESP32-S3-DevKitC-1 NUCLEO-F401RE Raspberry Pi Pico 2 Raspberry Pi Pico W Raspberry Pi Pico Teensy 4.1
Other parts on the Nordic nRF52840 DK
BME280 BMP280 DHT11 HC-SR04 SSD1306 OLED MPU6050 DS18B20 WS2812B LED strip SG90 servo Relay module HC-SR501 PIR LCD 1602 I2C INA219 VL53L0X BH1750 MAX30102 RC522 RFID NEO-6M GPS Capacitive soil moisture sensor ADS1115 TM1637 28BYJ-48 stepper L298N Potentiometer Push button LED Joystick module SD card module AHT20