DHT11 with Teensy 4.1

Wiring for the DHT11 temperature + humidity on the Teensy 4.1 (MIMXRT1062DVJ6B, 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

DHT11 pin	Role	Teensy 4.1 pin	Notes
VCC	Power	3V
DATA	One-wire data	2 (GPIO_EMC_04)	Needs a 10 kΩ pull-up (already on 3-pin modules; 3-pin module order varies, read the labels)
NC	Not wired to the board	not connected	Not connected
GND	Ground	G

Check before you power it on

Supply: 3.3 V from the 3V pin.

Test code (Arduino)

// Library: DHT sensor library (Adafruit)
#include <DHT.h>

DHT dht(2, DHT11);

void setup() {
  Serial.begin(115200);
  dht.begin();
}

void loop() {
  delay(2000);
  Serial.print(dht.readTemperature());
  Serial.print(" C  ");
  Serial.print(dht.readHumidity());
  Serial.println(" %");
}

Arduino board: teensy:avr:teensy41. Press the white program button once if the upload waits for the board.

Questions

Which Teensy 4.1 pins do I use for the DHT11?

VCC → 3V, DATA → 2 (GPIO_EMC_04), GND → G.

Does the DHT11 work with the Teensy 4.1 at 3.3 V?

Yes: the DHT11 runs at 3.3-5 V and the Teensy 4.1 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 BoardPilot

Full Teensy 4.1 pinout · DHT11 temperature + humidity: all pins and data

The DHT11 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 Nordic nRF52840 DK NUCLEO-F401RE Raspberry Pi Pico 2 Raspberry Pi Pico W Raspberry Pi Pico

Other parts on the Teensy 4.1

BME280 BMP280 DHT22 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