Hi, I achieved that with Esphome in combination with this external component: github://SzczepanLeon/esphome-components.
In my case I’m using an ESP32 + CC1101 which supports multiple frequencies (https://aliexpress.com/item/1005008223029421.html)
Here is my sketch:
esphome:
name: esp-004
friendly_name: esp-004
esp32:
board: esp32dev
framework:
type: arduino
logger:
level: DEBUG
api:
encryption:
key: !secret api_key_esp-004
ota:
- platform: esphome
password: !secret ota_pwd_esp-004
wifi:
ssid: !secret wifi_iot_ssid
password: !secret wifi_iot_password
time:
- platform: sntp
id: time_sntp
external_components:
- source: github://SzczepanLeon/esphome-components@version_4
refresh: 0d
components: [ wmbus ]
wmbus:
mosi_pin: GPIO13
miso_pin: GPIO23
clk_pin: GPIO22
cs_pin: GPIO14
gdo0_pin: GPIO21
gdo2_pin: GPIO18
led_pin: GPIO0
led_blink_time: "1s"
frequency: 868.950
all_drivers: False
sync_mode: True
log_all: False
mqtt:
broker: 192.168.1.50
username: !secret mqtt_user
password: !secret mqtt_pwd
sensor:
- platform: wmbus
meter_id: !secret multical_id
type: multical21
key: !secret multical_key
sensors:
- name: "Multical21 RSSI"
field: "rssi"
accuracy_decimals: 0
unit_of_measurement: "dBm"
device_class: "signal_strength"
state_class: "measurement"
entity_category: "diagnostic"
- name: "Multical21 Water Usage"
field: "total"
accuracy_decimals: 3
unit_of_measurement: "m³"
device_class: "water"
state_class: "total_increasing"
icon: "mdi:water"