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Made for ESPHome
Device Type:sensor
Electrical Standard:global
Board:esp32
Difficulty:Comes with ESPhome (1/5)
Project URL:https://docs.linkgear.net/books/lg-emept1/page/manual-safety

EMESS-PT 100/1000 Sensor Board by LinkGear for ESPHome

The LinkGear EMESS-PT is an ESPHome-ready RTD sensor board for PT100 and PT1000 probes. It supports either two 2-wire probes, or one 2-wire probe together with one 3-wire or 4-wire probe. DIP switches select PT100/PT1000 and 2-wire/3-wire/4-wire operation without soldering. If you want to learn more, please check our manual and instructions page.

LinkGear EMESS-PT Sensor Board

Features​

  • 2 MAX31865 channels for PT100/PT1000 probes
  • Supports 2 x 2-wire RTDs or 1 x 2-wire plus 1 x 3-wire/4-wire RTD
  • 6 individually addressable SK6812 LEDs
  • Default LED configuration can be used to show hot/cold state per sensor
  • USB-C power passthrough and screwless spring clamp terminals
  • Passive buzzer for configurable alarms

Flashing​

Boards come pre-flashed, but can be re-flashed at flash.linkgear.net. Select LinkGear EMESS-PT in the LinkGear web flasher.

Pinout​

uC PinFunction
GPIO22I2C SCL
GPIO21I2C SDA
GPIO23SPI MOSI
GPIO19SPI MISO
GPIO18SPI SCK
GPIO5MAX31865 right side CS
GPIO4MAX31865 left side CS
GPIO17SK6812 LED data
GPIO25Buzzer

Basic Configuration​

The configuration is available on the GitHub page.