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Gas Connect for ESPHome

Device Type:sensor
Electrical Standard:global
Board:esp32
Difficulty:Comes with ESPhome (1/5)
Project URL:https://github.com/NG3D-Druck/Gas-Connect-for-ESPHome

Gas Connect BK for ESPHome

Description

The Gas Connect for ESPHome by NG3D-Druck is a pulse sensor for gas meters with a reed contact, with a built-in Waveshare ESP32-C3-Zero. It ships with ESPHome pre-installed and is available as Gas Connect BK for ESPHome, which fits e.g. Elster/Honeywell BK-G2.5–G25.

Features:

  • Gas meter reading for the Home Assistant energy dashboard, plus gas flow
  • Consumption today, yesterday, this month and this year, rolling over at local midnight (timezone taken over from Home Assistant)
  • Set the meter reading once to match the value shown on the meter
  • Selectable volume per pulse (0.001 / 0.01 / 0.1 / 1 m³) and adjustable debounce time of the reed contact
  • Status LED (no Wi-Fi, no Home Assistant connection, pulse detected); can show only the status or be turned off
  • Firmware updates via Home Assistant

Setup

  1. Mount the sensor on the meter and power it via USB-C.
  2. Connect it to Wi-Fi with Improv via Bluetooth (Home Assistant app), Improv via USB in the web installer, or the fallback hotspot.
  3. Add it in Home Assistant, where it is discovered automatically. Set Pulse volume if your meter does not count 0.01 m³ per revolution, then enter the current value of the meter in Set meter reading.

GPIO Pinout

PinFunction
GPIO4Reed contact (to GND, pull-up)
GPIO10Onboard WS2812 RGB LED

Configuration

The current firmware configuration is fetched live from the upstream repository:

# Loading https://github.com/NG3D-Druck/Gas-Connect-for-ESPHome/blob/main/gas-connect.factory.yaml…