esp8266_p1meter

Software for the ESP2866 that sends P1 smart meter data to an mqtt broker (with OTA firmware updates)

about this fork

This fork is suited for Belgium. It originates from https://github.com/daniel-jong/esp8266_p1meter.

The Belgian DSMR5-meters have two differences to the Dutch meters, visible in the telegrams:

• The Gas uses a different ID.
• The Tarif indicator is inverted. (1 = day, 2 = night)

Getting started

This setup requires:

• An esp8266 (nodeMcu and Wemos d1 mini have been tested)
• A 10k ohm resistor
• A 4 pin RJ11 or 6 pin RJ12 cable Both cables work great, but a 6 pin cable can also power the esp8266 on most DSMR5+ meters.

Compiling up using Arduino IDE:

• Ensure you have selected the right board
• Using the Tools->Manage Libraries... install PubSubClient and WifiManager
• In the file Settings.h change OTA_PASSWORD to a safe secret value
• Flash the software

Compiling up using PlatformIO:

• Ensure the correct board type is selected in project configuration
• In the file Settings.h change OTA_PASSWORD to a safe secret value
• Upload the software.

Finishing off:

• You should now see a new wifi network ESP****** connect to this wifi network, a popup should appear, else manually navigate to 192.168.4.1
• Configure your wifi and Mqtt settings
• To check if everything is up and running you can listen to the MQTT topic hass/status, on startup a single message is sent.

Connecting to the P1 meter

Connect the esp8266 to an RJ11 cable/connector following the diagram.

P1 pin	ESP8266 Pin
2 - RTS	3.3v
3 - GND	GND
4 -
5 - RXD (data)	RX (gpio3)

On most Landys and Gyr models a 10K resistor should be used between the ESP's 3.3v and the p1's DATA (RXD) pin. Many howto's mention RTS requires 5V (VIN) to activate the P1 port, but for me 3V3 suffices.

Optional: Powering the esp8266 using your DSMR5+ meter

Expand to see wiring description

When using a 6 pin cable you can use the power source provided by the meter.

P1 pin	ESP8266 Pin
1 - 5v out	5v or Vin
2 - RTS	3.3v
3 - GND	GND
4 -
5 - RXD (data)	RX (gpio3)
6 - GND	GND

Data Sent

All metrics are send to their own MQTT topic. The software sends out to the following MQTT topics:

sensors/power/p1meter/consumption_low_tarif 2209397
sensors/power/p1meter/consumption_high_tarif 1964962
sensors/power/p1meter/returndelivery_low_tarif 2209397
sensors/power/p1meter/returndelivery_high_tarif 1964962
sensors/power/p1meter/actual_consumption 313
sensors/power/p1meter/actual_returndelivery 0
sensors/power/p1meter/l1_instant_power_usage 313
sensors/power/p1meter/l2_instant_power_usage 0
sensors/power/p1meter/l3_instant_power_usage 0
sensors/power/p1meter/l1_instant_power_current 1000
sensors/power/p1meter/l2_instant_power_current 0
sensors/power/p1meter/l3_instant_power_current 0
sensors/power/p1meter/l1_voltage 233
sensors/power/p1meter/l2_voltage 0
sensors/power/p1meter/l3_voltage 0
sensors/power/p1meter/gas_meter_m3 968922
sensors/power/p1meter/actual_tarif_group 2
sensors/power/p1meter/short_power_outages 3
sensors/power/p1meter/long_power_outages 1
sensors/power/p1meter/short_power_drops 0
sensors/power/p1meter/short_power_peaks 0

Home Assistant Configuration

Use the following example for home assistant's sensor.yaml

# Sensors for esp8266_p1meter to be used in Home Assistant

- platform: mqtt
  unique_id: p1_Consumption_nacht_energy
  name: P1 Consumption Nacht
  unit_of_measurement: 'kWh'
  state_topic: "sensors/power/p1meter/consumption_low_tarif"
  value_template: "{{ value|float / 1000 }}"
  device_class: energy
  state_class: measurement
  last_reset_topic: "sensors/power/p1meter/consumption_low_tarif"
  last_reset_value_template: "1970-01-01T00:00:00+00:00"

- platform: mqtt
  unique_id: p1_Consumption_dag_energy
  name: P1 Consumption Dag
  unit_of_measurement: 'kWh'
  state_topic: "sensors/power/p1meter/consumption_high_tarif"
  value_template: "{{ value|float / 1000 }}"
  device_class: energy
  state_class: measurement
  last_reset_topic: "sensors/power/p1meter/consumption_high_tarif"
  last_reset_value_template: "1970-01-01T00:00:00+00:00"

- platform: mqtt
  unique_id: p1_production_nacht_energy
  name: P1 Return Delivery Nacht
  unit_of_measurement: 'kWh'
  state_topic: "sensors/power/p1meter/returndelivery_high_tarif"
  value_template: "{{ value|float / 1000 }}"
  device_class: energy
  state_class: measurement
  last_reset_topic: "sensors/power/p1meter/returndelivery_high_tarif"
  last_reset_value_template: "1970-01-01T00:00:00+00:00"

- platform: mqtt
  unique_id: p1_production_dag_energy
  name: P1 Return Delivery Dag
  unit_of_measurement: 'kWh'
  state_topic: "sensors/power/p1meter/returndelivery_low_tarif"
  value_template: "{{ value|float / 1000 }}"
  device_class: energy
  state_class: measurement
  last_reset_topic: "sensors/power/p1meter/returndelivery_low_tarif"
  last_reset_value_template: "1970-01-01T00:00:00+00:00"

- platform: mqtt
  unique_id: p1_consumption_power
  name: P1 Actual Power Consumption
  unit_of_measurement: 'kW'
  state_topic: "sensors/power/p1meter/actual_consumption"
  value_template: "{{ value|float / 1000 }}"
  device_class: power
  state_class: measurement
  last_reset_topic: "sensors/power/p1meter/actual_consumption"
  last_reset_value_template: "1970-01-01T00:00:00+00:00"
  
- platform: mqtt
  unique_id: p1_production_power
  name: P1 Actual Return Delivery
  unit_of_measurement: 'kW'
  state_topic: "sensors/power/p1meter/actual_returndelivery"
  value_template: "{{ value|float / 1000 }}"
  device_class: power
  state_class: measurement
  last_reset_topic: "sensors/power/p1meter/actual_returndelivery"
  last_reset_value_template: "1970-01-01T00:00:00+00:00"
  
- platform: mqtt
  name: P1 L1 Instant Power Usage
  unit_of_measurement: 'kW'
  state_topic: "sensors/power/p1meter/l1_instant_power_usage"
  value_template: "{{ value|float / 1000 }}"
  device_class: power
  state_class: measurement

- platform: mqtt
  name: P1 L2 Instant Power Usage
  unit_of_measurement: 'kW'
  state_topic: "sensors/power/p1meter/l2_instant_power_usage"
  value_template: "{{ value|float / 1000 }}"
  device_class: power
  state_class: measurement

- platform: mqtt
  name: P1 L3 Instant Power Usage
  unit_of_measurement: 'kW'
  state_topic: "sensors/power/p1meter/l3_instant_power_usage"
  value_template: "{{ value|float / 1000 }}"
  device_class: power
  state_class: measurement

- platform: mqtt
  name: P1 L1 Instant Power Current
  unit_of_measurement: 'A'
  state_topic: "sensors/power/p1meter/l1_instant_power_current"
  value_template: "{{ value|float / 1000 }}"
  device_class: current
  state_class: measurement

- platform: mqtt
  name: P1 L2 Instant Power Current
  unit_of_measurement: 'A'
  state_topic: "sensors/power/p1meter/l2_instant_power_current"
  value_template: "{{ value|float / 1000 }}"
  device_class: current
  state_class: measurement

- platform: mqtt
  name: P1 L3 Instant Power Current
  unit_of_measurement: 'A'
  state_topic: "sensors/power/p1meter/l3_instant_power_current"
  value_template: "{{ value|float / 1000 }}"
  device_class: current
  state_class: measurement

- platform: mqtt
  name: P1 L1 Voltage
  unit_of_measurement: 'V'   
  state_topic: "sensors/power/p1meter/l1_voltage"
  value_template: "{{ value|float / 1000 }}"
  device_class: voltage
  state_class: measurement

- platform: mqtt
  name: P1 L2 Voltage
  unit_of_measurement: 'V'   
  state_topic: "sensors/power/p1meter/l2_voltage"
  value_template: "{{ value|float / 1000 }}"
  device_class: voltage
  state_class: measurement

- platform: mqtt
  name: P1 L3 Voltage
  unit_of_measurement: 'V'   
  state_topic: "sensors/power/p1meter/l3_voltage"
  value_template: "{{ value|float / 1000 }}"
  device_class: voltage
  state_class: measurement

- platform: mqtt
  name: P1 Gas Usage
  unit_of_measurement: 'm3'
  state_topic: "sensors/power/p1meter/gas_meter_m3"
  value_template: "{{ value|float / 1000 }}"
  #device_class: gas
  state_class: measurement

- platform: mqtt
  name: P1 Actual Tariff Group
  state_topic: "sensors/power/p1meter/actual_tarif_group"

- platform: mqtt
  name: P1 Short Power Outages
  state_topic: "sensors/power/p1meter/short_power_outages"

- platform: mqtt
  name: P1 Long Power Outages
  state_topic: "sensors/power/p1meter/long_power_outages"

- platform: mqtt
  name: P1 Short Power Drops
  state_topic: "sensors/power/p1meter/short_power_drops"

- platform: mqtt
  name: P1 Short Power Peaks
  state_topic: "sensors/power/p1meter/short_power_peaks"

The automatons are yours to create. And always remember that sending alerts in case of a power outtage only make sense when you own a UPS battery :)

Thanks to

This sketch is mostly copied and pasted from several other projects. Standing on the heads of giants, big thanks and great respect to the writers and/or creators of:

• https://github.com/jantenhove/P1-Meter-ESP8266
• https://github.com/neographikal/P1-Meter-ESP8266-MQTT
• http://gejanssen.com/howto/Slimme-meter-uitlezen/
• https://github.com/rroethof/p1reader/
• http://romix.macuser.nl/software.html
• http://blog.regout.info/category/slimmeter/
• http://domoticx.com/p1-poort-slimme-meter-hardware/