Hello All,
Like many, I’m new toe HA, and am trying to build a flow meter sensor utilizing the pulse output from my flow meter. I’ve followed a number of tutorials online and reviewed several posts, trying a number of modifications to get something to work. Regrettably, I’m at the point where I’m hoping someone from this community can provide some direction or helpful insight.
Equipment:
EKM Metering water meter
[https://documents.ekmmetering.com/EKM-SPWM-075-HD-water-meter-spec-sheet.pdf](https://Water Meter Specificaitons)
These meters have a basic, non-powered, Reed Switch, 2-wire, open/close pulse output. One close of the circuit = 1/100th cubic foot of water. As I understand, the pulse reader device will need to put a low voltage on the line and sense when the circuit closes at the water meter end. The manufacturer recommends no higher than 20mA and 24V for reading the pulse on their water meters.
Pulse Reader:
ESP8266 ESP-12F NodeMCU Lua Amica V2
[NodeMCU Amica V2 road test - Hackster.io](https://ESP8266 Specifications)
Setup:
The water meter has a red, white, and black wire coming from the reed switch. Manufacturer documents call for using just the red and black wire for pulse reading. I’ve solder the black wire to GND and the red wire to D6 (GPIO12) on the ESP8266.
ESPHome:
I’ve flashed the firmware and have generally followed these steps to set the system up: [Build a cheap water usage sensor using ESPhome and a proximity sensor - PieterBrinkman.com](https://ESPHome Water Meter DIY)
The yaml for the esphome is below:
esphome:
name: waterpulser
esp8266:
board: esp01_1m
# Enable logging
logger:
# Enable Home Assistant API
api:
ota:
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
manual_ip:
static_ip: 192.168.1.71
gateway: 192.168.1.1
subnet: 255.255.255.0
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Esphome-Web-132Fb7"
password: "wmxwtDv0dlQO"
captive_portal:
sensor:
- platform: pulse_counter
pin:
number: GPIO12
mode:
input: true
pullup: true
update_interval : 6s
name: "water pulse"
id: water_pulse
- platform: pulse_meter
pin: GPIO12
name: "Water Pulse Meter"
unit_of_measurement: "liter/min"
icon: "mdi:water"
total:
name: "Water Total"
unit_of_measurement: "liter"
- platform: pulse_meter
pin: GPIO12
name: "Water Pulse Meter"
unit_of_measurement: "liter/min"
icon: "mdi:water"
total:
name: "Water Meter Total"
unit_of_measurement: "m³"
id: water_meter_total
accuracy_decimals: 3
device_class: water
state_class: total_increasing
filters:
- multiply: 0.028
- platform: template
name: "Water Usage Liter"
id: water_flow_rate
accuracy_decimals: 1
unit_of_measurement: "l/min"
icon: "mdi:water"
lambda: return (id(water_pulse).state * 10);
update_interval: 6s
Problem:
Im able to get the ESP online, sensors show up in HA, but no data is collected at all. Nothing appears in the sensor history, except for when I take the device offline to make changes, there’s a break in the history trend., Otherwise it’s a flat line at 0.
Can aynoe help or point me I the right direction to get this project going?
Can I ask why the switch of GPIO (for understanding)?