meshtastic/docs/software/plugins/environment.md

id	title	sidebar_label
environment-plugin	Environment measurement	Environment measurement

About

The Environment Measurement Plugin will allow nodes to send a specific message with information from connected environmental sensors. Currently supported sensors are BME280, BME680, DHT11, DHT12, DHT21, DHT22 and Dallas 1-wire DS18B20.

The preferred setup is using I2C, so the environmental_measurement_plugin_sensor_pin may not be needed.

Configuration

These are the settings that can be configured.

environmental_measurement_plugin_enabled
    Is the plugin enabled?

    0 = Disabled (Default)
    1 = Enabled

environmental_measurement_plugin_screen_enabled
    Show received sensor readings on device screen.

    0 = Disabled (Default)
    1 = Enabled

environmental_measurement_plugin_read_error_count_threshold
    Error count threshold for failed sensor readings.

    Default = 0

preferences.environmental_measurement_plugin_update_interval
    How often (in seconds) should sensor readings be broadcasted?

    Default = 0

environmental_measurement_plugin_recovery_interval
    For how long should we wait (in seconds) before trying to read sensors again upon exceeded error threshold?

    Default = 0

environmental_measurement_plugin_display_fahrenheit
    Should temperature readings be converted to fahrenheit?

    0 = Disabled (Default)
    1 = Enabled

environmental_measurement_plugin_sensor_type
    What sensor is connected?

    0 = DHT11 (Default)
    1 = Dallas 1-wire DS18B20
    2 = DHT12
    3 = DHT21
    4 = DHT22
    5 = BME280
    6 = BME680

environmental_measurement_plugin_sensor_pin
    Which pin is the sensor connected to?

    Default = 0

Usage Notes

For basic usage, start with:

environmental_measurement_plugin_enabled = 1

environmental_measurement_plugin_screen_enabled = 1

Depending on which pin your sensor is connected to, set it accordingly:

environmental_measurement_plugin_sensor_pin = 13

:::note The device must be restarted after the settings have been changed for the plugin to take effect. :::

Hardware

The sensors can be wired differently, here's one example for sensor DS18B20 https://randomnerdtutorials.com/esp32-ds18b20-temperature-arduino-ide

Known Problems

• No default configuration values are currently set, so this must be done when enabling the plugin.