homie-gasmeter

gasmeter pulse sensor based on a ESP8266 using Homie Uses a Hall sensor, directly connected to a Wemos D1 mini written in Arduino

Counts pulses and keeps total, calculates hourly consumption and instant (=1min) flow. All data is published by MQTT using the Homie framework.

Hardware

I'm using a A3213EUA-T from Allegro Microsystems. The IC is directly connected to a GPIO pin as defined in the firmware without any extra components (so no resistors or capacitors). As I'm using a Wemos D1 mini, I can use the 3.3V pin to source from for the Hall sensor. GND is obviously connected to GND.

dependencies:

• Homie by Marvin Roger and subsequent dependencies
• my simple Telnet Printer OR EQUIVALENT

To do:

• testing and debugging!
• write data directly into InfluxDB (FYI: I'm currently using openHAB2.)
• save total counter locally for recovery purposes