https://shop.m5stack.com/products/rs485-module
This example includes sensor details for a THC-S Soil Moisture, Temperature and Conductivity Sensor as a demonstration of how to connect the device
esphome:
name: m5stack-poesp32-02
libraries:
- Wire
- [email protected]
external_components:
- source:
type: local
path: components
components: [tdr_soil_sensor3]
### RS485
uart:
id: modbus_serial
rx_pin: 1
tx_pin: 2
baud_rate: 4800
stop_bits: 1
modbus:
id: modbus1
uart_id: modbus_serial
modbus_controller:
- id: con_modbus_name
update_interval: 11s
address: 0x1
command_throttle: 150ms
setup_priority: -10
sensor:
- platform: modbus_controller
name: "Moisture WC"
id: WC
address: 0x0000
unit_of_measurement: "%"
register_type: read
value_type: U_WORD
accuracy_decimals: 1
filters:
lambda: return x / 10;
state_class: measurement
- platform: modbus_controller
name: "Temp"
id: C
address: 0x0001
unit_of_measurement: "°C"
register_type: read
value_type: U_WORD
accuracy_decimals: 1
filters:
lambda: return x / 10;
state_class: measurement
- platform: modbus_controller
name: "Conductivity 1 dS/m = 1 mS/cm"
id: EC
address: 0x0002
unit_of_measurement: "ms/cm"
register_type: read
value_type: U_WORD
accuracy_decimals: 1
filters:
lambda: return x / 100;
state_class: measurement