Combining Mysensors Water Meter Pulse Sensor[link] with GoodWeLogger[link] to create a watermeter that sends its data over MQTT.
For example to use with Hass.io [link]
- ESP8266 (Wemos/LOLIN D1 mini)
- TCRT5000 IR module
- Basic soldering and wiring skills
- (For Wemos d1 mini) CH340G driver [link]
- Add boards
Preferences->Additional Board Manager URLsAddhttp://arduino.esp8266.com/stable/package_esp8266com_index.jsonThan install wemos boards (esp8266 by ESP8266 Community)tools->board->boards manager - Install lib
pubsubclient[link]
| ESP8266 | TCRT5000 |
|---|---|
| 3.3v | VCC |
| GND | GND |
| RX | D0 |
Align the IR module with the metal half disk inside the meter, Try to mount it above 1 half, not in its center, so when it turns the the sensor get triggerd. Adjust the trimpot so it just triggered when the disk is underneath.
Copy Settings.example.h to Settings.h and fill in the correct data.
| Setting | default | Description |
|---|---|---|
| WIFI_HOSTNAME | WaterMeterPuls | device name on network |
| WIFI_SSID | - | Wifi name to connect to |
| WIFI_PASSWORD | - | Wifi password |
| MQTT_HOST_NAME | - | MQTT broker address |
| MQTT_PORT | 1833 | MQTT broker port |
| MQTT_USER_NAME | - | MQTT user name |
| MQTT_PASS | - | MQTT password |
| MQTT_QUICK_UPDATE_INTERVAL | 1000 | (?) Send interval (ms) |
| MQTT_REGULAR_UPDATE_INT | 10000 | (?) Send interval (ms) |
| MQTT_TOPIC | watermeter | MQTT topic prefix |
| DATA_PIN | 3 | Pin of IR module D0 |
| PULSE_FACTOR | 1000 | Number of blinks per m3 of your meter (One rotation/liter) |
| MAX_FLOW | 40 | Max flow (l/min) value to report. This filters outliers |
| SEND_FREQUENCY | 3000 | Time (ms) between posts |
| DEBUGE_MODE | true | debug mode |
Subscribe to watermeter/<topic> in your MQTT client. prefix can be changes in the settings.
| Topic | Description | Unit |
|---|---|---|
| vol | total m3 since reboot | m3 |
| puls | total pulses since reboot | int |
| flow | water flow in l/min | l/min |
Example:
watermeter/vol: 0.005
watermeter/puls: 76
watermeter/flow: 37.0425
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