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Temperature & Humidity

Temperature & Humidity

SKU:AX22-0011

This AX22-sized board drops a trusty DHT11 onto a 22 × 22 mm PCB so you can read ambient temperature and relative humidity with a single-wire digital protocol. A built-in 4.7 kΩ pull-up makes the data line plug-and-play, while the sensor’s 1 Hz refresh rate is perfect for dashboards, smart lamps, or environmental loggers that don’t need sub-second updates. Just issue a read command and your microcontroller—whether you’re coding in the Arduino IDE, MicroPython, or MicroBlocks—gets reasonably accurate (±2 °C / ±5 % RH) climate data in one shot. Snap it into any AX22 backplane and you’ve added reliable local weather sensing to your project with zero fuss.
$7.49
$7.49
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Technical details

  • 22 mm × 22 mm square
  • 4× ⌀2.7 mm Mounting Holes
  • 20 – 90 % RH, ±5 % RH accuracy
  • 0 – 50 °C, ±2 °C accuracy
  • 1 Hz update rate, single-wire protocol
  • On-board 4.7 kΩ pull-up resistor
  • 3.3 V, 5.0 V
  • Arduino IDE Compatible
  • MicroPython Compatible
  • MicroBlocks Compatible
Component datasheet

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Pinout & connections

Pinout & connections

Technical Resources

Temperature & Humidity - (AX22-0011)
Circuit Schematic 3D Model
PCB FRONT
Temperature & Humidity — PCB FRONT
PCB BACK
Temperature & Humidity — PCB BACK

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Arduino example

ax22-0011.ino 
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>

#define DHTPIN 14

#define DHTTYPE DHT11

DHT_Unified dht(DHTPIN, DHTTYPE);

uint32_t delayMS;

void setup() {
  Serial.begin(9600);
  dht.begin();
}

void loop() {
  delay(100);
  sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (isnan(event.temperature)) {
    Serial.println(F("Error reading temperature!"));
  } else {
    Serial.print(F("Temperature: "));
    Serial.print(event.temperature);
    Serial.println(F("°C"));
  }
  // Get humidity event and print its value.
  dht.humidity().getEvent(&event);
  if (isnan(event.relative_humidity)) {
    Serial.println(F("Error reading humidity!"));
  } else {
    Serial.print(F("Humidity: "));
    Serial.print(event.relative_humidity);
    Serial.println(F("%"));
  }
}