ESPHome Components

This is my personal collection of ESPHome components to add support for unsupported devices on mainline ESPHome. All content is published under the ESPHome license.

MCP4728

MCP4728 is a quad channel, 12-bit voltage output Digital-to-Analog Converter with non-volatile memory and I2C compatible Serial Interface.

• Supported features
  • Each channel is exported as a float output.
  • Output Vref can be selected between vdd and internal (2.048V).
  • For internal Vref, two levels of gain can be selected (X1 (default) and X2).
  • Two write modes are supported:
    • MultiWrite: write all channel settings without writing to non-volatile memory (EEPROM). This is the default and recommended mode.
    • SequentialWrite: write all channel settings to non-volatile memory (EEPROM) and apply this changes.
• Unsupported features
  • Power-down mode selection (NORMAL is selected for all channels).
  • FastWrite mode as this requires the LDAC pin.
  • SingleWrite mode.

Check example_mcp4728.yaml for a reference usage file.

MAX44009

The MAX44009 is an ambient light sensor featuring an I2C digital output.

• Supported features
  • Measure lux intensity
  • Measure mode selection:
    • Low power: The IC measures lux intensity only once every 800ms regardless of integration time.
    • Continuous mode: The IC continuously measures lux intensity.
    • Auto: Continuous mode for an update interval < 800ms, low power mode otherwise.
  • The device always runs on auto mode (hardware default).
• Unsupported features
  • Manual mode.
  • Advanced power saving features (timers, thresholds, INT pin).

Check example_max44009.yaml for a reference usage file.

SI1145/46/47

The SI1145 is a sensor IC with a calibrated light sensing algorithm that can calculate UV Index. It doesn't contain an actual UV sensing element, instead it approximates it based on visible & IR light from the sun.

• Supported features
  • Measure visible light (visible)
  • Measure IR light (infrared)
  • Measure UV index (uvindex)
  • Combine visible and IR sensors to approximate total lux (calculated_lux)
  • Auto range and gain mode: auto
  • Manual range and gain mode: manual
• Unsupported features
  • IR based proximity sensor
  • Relative temperature sensor

Check example_si1145.yaml for a reference usage file.

UARTPIN

This component is intended to support relay modules controllable through UART (serial) like the relay modules from LC Technology. Currently, the LC Technology modules based on Nuvoton microcontroller are not supported.

• Supported features
  • Send init data after a delay.
  • Send data to set pin/relay high.
  • Send data to set pin/relay low.

Check example_uartpin_lctech.yaml for a reference usage file for an LC Technology Dual Relay module.

CSE7761 (UART)

The CSE7761 is a dual channel power sensor present on the Sonoff Dual R3 v1.

• Supported features
  • Voltage sensor
  • Current sensor for channels 1 and 2.
  • Power sensor for channels 1 and 2.
• Unsupported features
  • Frequency sensor
  • Zero cross detection

Check example_sonoff_dual_r3_v1.yaml for a reference usage file for a Sonoff Dual R3 v1.

The new Sonoff Dual R3 v2 features a different power sensor (BL0939) wich is not compatible with this component.