resol deltasol bs plus vbus

[Gert Teunis]

I have a resol detasol bs plus and I am working on integrating it into homeassistant esphome with an esp8266. I followed the schematic with an optocoupler from this site: https://esphome.io/components/vbus.html# copilot gave me the following yaml code (see code at the bottom) for esphome. The esp8266 is integrated correctly but I don't get raw data? Anyone have an idea? Should I still work with the original vbus/usb or lan? I think these are very expensive. Anyone who can help me please? Gert

substitutions:

  name: esphome-web-7254c9

  friendly_name: ResolZonBoil

esphome:

  name: ${name}

  friendly_name: ${friendly_name}

  min_version: 2024.6.0

  name_add_mac_suffix: false

  project:

    name: esphome.web

    version: dev

esp8266:

  board: esp01_1m

wifi:

  ssid: !secret wifi_ssid

  password: !secret wifi_password

  manual_ip:

    static_ip: 192.168.2.177

    gateway: 192.168.2.1

    subnet: 255.255.255.0

  ap:

    ssid: "Fallback Hotspot"

    password: "fallback_wachtwoord"

captive_portal:

logger:

  level: VERY_VERBOSE

  baud_rate: 0

  logs:

    uart: VERY_VERBOSE

    vbus: VERY_VERBOSE

    sensor: VERY_VERBOSE

api:

ota:

  platform: esphome

uart:

  id: uart_bus

  tx_pin: GPIO1

  rx_pin: GPIO3

  baud_rate: 9600

  debug:

    direction: BOTH

    after:

      bytes: 150

vbus:

  - id: vbus_hub

    uart_id: uart_bus

sensor:

  - platform: vbus

    model: custom

    dest: 0x10

    source: 0x4221     # Hexadecimal source for DeltaSol BS Plus

    command: 0x100     # Command for requesting data

    sensors:

      - id: scheme

        name: Arrangement scheme

        icon: mdi:pipe-wrench

        accuracy_decimals: 0

        entity_category: diagnostic

        lambda: return x[14];  // Configured arrangement scheme

      - id: temp2

        name: Temperature DHW

        state_class: measurement

        unit_of_measurement: "°C"

        lambda: return ((x[3] << 8) + x[2]) * 0.1f;  // Temperature 2

      - id: raw_data

        name: Raw Data

        unit_of_measurement: ""

        accuracy_decimals: 0

        lambda: |-

          std::string hex_string;

          for (auto byte : x) {

            char buffer[3];

            sprintf(buffer, "%02X", byte);

            hex_string += buffer;

          }

          ESP_LOGD("raw_data", "Raw data: %s", hex_string.c_str());

          return (float)x[0];  // Example of processing raw data

binary_sensor:

  - platform: vbus

    model: custom

    dest: 0x10

    source: 0x4221     # Hexadecimal source

    command: 0x100

    binary_sensors:

      - name: Heat Quantity Measurement On

        id: bin_hqm

        icon: mdi:counter

        lambda: return x[15] & 0x20; // Option Heat Quantity Measurement enabled

web_server:

  port: 80

[Craigue Hyland]

Hi

I have the same resol usit with just a sinple voltage divider and it works perfectly with the following code:

uart:

id: resol

rx_pin: GPIO16

baud_rate: 9600

vbus:

uart_id: resol

sensor:

- platform: template

id: pressure_psi

name: Solar Heating Pressure Psi

unit_of_measurement: Psi

lambda: return id(pressure).state ;

- platform: template

id: pressure_bar

name: Solar Heating Pressure Bar

unit_of_measurement: Bar

update_interval: 10s

filters:

- multiply: 0.0689

lambda: return id(pressure).state ;

### Analog Inputs

- platform: adc

pin: GPIO34

id: pressure

name: Solar Heating Pressure

update_interval: 60s

# unit_of_measurement: "PSI"

# unit_of_measurement: "bar"

accuracy_decimals: 2

attenuation: 6db

filters:

- calibrate_linear:

- 0.45 -> 0.0

# - 1.8 -> 29.0

- 2.5 -> 65

# - 2.35 -> 43.5

# - offset: -0.25 # Calibration

# - lambda: return ((x * 5.00) / 1024.00) * 40.00 ;

- platform: vbus

model: custom

dest: 0x10

source: 0x4720

command: 0x100

sensors:

- id: collector_temp

name: Collector Temp

accuracy_decimals: 1

filters:

throttle_average: 30s

unit_of_measurement: "°C"

device_class: "temperature"

state_class: "measurement"

lambda: return {float((x[5] << 8) + x[4]) * 0.1f};

- id: water_store_bottom_temp

name: Water Store Bottom Temp

accuracy_decimals: 1

filters:

throttle_average: 30s

unit_of_measurement: "°C"

device_class: "temperature"

state_class: "measurement"

lambda: return {float((x[7] << 8) + x[6]) * 0.1f};

- id: water_store_top_temp

name: Water Store Top Temp

accuracy_decimals: 1

filters:

throttle_average: 30s

unit_of_measurement: "°C"

device_class: "temperature"

state_class: "measurement"

lambda: return {float ((x[9] << 8) + x[8]) * 0.1f};

- id: heat_qty

name: Heat Quantity

accuracy_decimals: 0

filters:

throttle: 60s

state_class: total_increasing

# device_class: "DURATION"

unit_of_measurement: "BTU"

lambda: return x[20];

- id: pump_speed

name: Solar Pump Speed

device_class: "power_factor"

unit_of_measurement: "%"

state_class: "measurement"

accuracy_decimals: 0

filters:

throttle_average: 30s

lambda: return x[16];

- id: pump_runtime

name: Solar Pump Runtime

icon: mdi:pipe-wrench

device_class: "DURATION"

unit_of_measurement: "h"

accuracy_decimals: 0

state_class: "total_increasing"

filters:

throttle: 60s

lambda: return ((x[29] << 8) + x[28]);

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Regards

Craigue