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dht_exporter's Introduction

dht_exporter

Prometheus exporter for temperature/humidity data provided by DHT11/DHT22 sensors connected to a Raspberry PI GPIO

Usage

./dht_exporter

Options

Name Default Description
--version Print version information
--listen-address :9330 Address on which to expose metrics.
--path  /metrics  Path under which to expose metrics.
--device  22  Sensor type, either 11 or 22 for DHT11/DHT22
--names  names.yaml  File mapping GPIOs to names

Configuration

The names.yaml files contains the gpio and name to use

names:
  gpio: dht_sensor_01

Example output

# HELP dht_humidity_percent Humidity
# TYPE dht_humidity_percent gauge
dht_humidity_percent{location="dht_sensor_01"} 99.1
# HELP dht_temp Air temperature (in degrees C)
# TYPE dht_temp gauge
dht_temp{location="dht_sensor_01"} 24.6
# HELP dht_up Scrape was successful
# TYPE dht_up gauge
dht_up{location="dht_sensor_01"} 1

Circuit

Connect pin1 to 3.3V, pin2 with a pull-up resistor (4.7k – 10kΩ) to a gpio pin (i used 4.7k and gpio 4) and pin4 to GND on the PI.

Circuit

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