SensorTransmitter

Sensor Data FSK Transmitter based on RadioLib using SX1276 or CC1101

This project is closely related to BresserWeatherSensorReceiver

Use Cases

• Emulation of sensors for testing purposes
• Emulation of sensors while replacing the data with entirely different sensor values, e.g. using the manufacturer's temperature sensor protocol to display snow depth instead.
• Repeater (combined with receiver)

Supported Protocols

• Bresser 5-in-1
• Bresser 6-in-1
• Bresser 7-in-1
• Bresser Lightning
• Bresser Leakage

Sensor Data Provisioning Options

See sensor types in WeatherSensor.h

Select option in SensorTransmitter.h.

Raw Data

uint8_t payload[] = {0xEA, 0xEC, 0x7F, 0xEB, 0x5F, 0xEE, 0xEF, 0xFA, 0xFE, 0x76, 0xBB, 0xFA, 0xFF,
                      0x15, 0x13, 0x80, 0x14, 0xA0, 0x11, 0x10, 0x05, 0x01, 0x89, 0x44, 0x05, 0x00};

class WeatherSensor

JSON Data as Constant String

const char json[] =
   "{\"sensor_id\":255,\"s_type\":1,\"chan\":0,\"startup\":0,\"battery_ok\":1,\"temp_c\":12.3,\
     \"humidity\":44,\"wind_gust_meter_sec\":3.3,\"wind_avg_meter_sec\":2.2,\"wind_direction_deg\":111.1,\
     \"rain_mm\":123.4}";

JSON Data as Input from Serial Console - Examples

Bresser 5-in-1 Protocol - Weather Sensor

{"sensor_id": 255, "s_type": 1, "chan": 0, "startup": 0, "battery_ok": 1, "temp_c": 12.3, "humidity": 44, "wind_gust_meter_sec": 3.3, "wind_avg_meter_sec": 2.2, "wind_direction_deg": 111.1, "rain_mm": 123.4}

Bresser 6-in-1 Protocol - Soil Temperature and Moisture

{"sensor_id": 4294967295, "s_type": 4, "chan": 0, "startup": 0, "battery_ok": 1, "temp_c": 12.3, "moisture": 44}

Bresser 6-in-1 Protocol - Weather Sensor

{"sensor_id": 4294967295, "s_type": 1, "chan": 0, "startup": 0, "battery_ok": 1, "temp_c": 12.3, "humidity": 44, "wind_gust_meter_sec": 3.3, "wind_avg_meter_sec": 2.2, "wind_direction_deg": 111.1, "rain_mm": 123.4, "uv": 7.8}

Bresser 7-in-1 Protocol - Weather Sensor

{"sensor_id": 65535, "s_type": 1, "chan": 0, "startup": 0, "battery_ok": 1, "temp_c": 12.3, "humidity": 44, "wind_gust_meter_sec": 3.3, "wind_avg_meter_sec": 2.2, "wind_direction_deg": 111.1, "rain_mm": 123.4, "uv": 7.8, "light_klx": 123.456}

Bresser 7-in-1 Protocol - Particulate Matter Sensor

{"sensor_id": 65535, "s_type": 8, "chan": 0, "startup": 0, "battery_ok": 1, "pm_2_5": 2345, "pm_10": 1234}

Bresser 7-in-1 Protocol - CO2 Sensor

{"sensor_id": 65535, "s_type": 10, "chan": 0, "startup": 0, "battery_ok": 1, "co2_ppm": 1234}

Bresser 7-in-1 Protocol - HCHO/VOC Sensor

{"sensor_id": 65535, "s_type": 11, "chan": 0, "startup": 0, "battery_ok": 1, "hcho_ppb": 1234, "voc": 1}

Bresser Lightning Sensor

{"sensor_id": 65535, "s_type": 9, "chan": 0, "startup": 0, "battery_ok": 1, "strike_count": 11, "distance_km": 7}

Bresser Leakage Sensor

{"sensor_id":4294967295, "s_type": 5, "chan": 0, "startup": 0, "battery_ok": 1, "alarm": 1}

Serial Port Control

Note

No additional spaces are allowed in commands! (But spaces are permitted in JSON strings.)

Command	Examples	Description
{...}	see above	Set JSON message data
enc[oder]=<encoder>	enc=bresser-5in1 enc=bresser-6in1 enc=bresser-7in1 enc=bresser-lightning enc=bresser-leakage	Select encoder
int[erval]=<interval>	int=20	Set transmit interval in seconds (must be > 10)

Note

To allow reception by an original weather station console, it might be required to set the transmit interval to the value used by the specific type of sensor which is emulated.