Renogy BT-1

Python library to read Renogy RS232 compatible solar charge controllers using BT-1 bluetooth module. Tested with Rover / Wanderer series charge controllers and Raspberry Pi Zero 2 W. It might also work with other "SRNE like" devices like Rich Solar, PowMr etc. It supports periodic data polling and can also log the data to local MQTT broker, PVOutput cloud or your own custom server.

This was also found working with RS485 type BT-2 module, but reads only charge controller data. It will fail if any other peripherals are connected to communication hub, like renogy battery (see thread).

Example

Make sure to update config.ini with correct values for mac_addr and alias and run the following command:

python3 ./example.py

Alternatively, use it as a module with your own custom config and callback function:

from renogybt import BTOneClient
BTOneClient(config, on_data_received).connect()

How to get mac address?

The library will automatically list possible bt-1 devices discovered nearby with alias starting BT-TH. You can alternatively use apps like BLE Scanner.

Output

INFO:root:Adapter status - Powered: True
INFO:root:Starting discovery...
INFO:root:Devices found: 5
INFO:root:Found bt1 device BT-TH-B00FXXXX  [XX:6F:B0:0F:XX:XX]
INFO:root:[80:6f:b0:0f:XX:XX] Discovered, alias = BT-TH-B00FXXXX
INFO:root:[80:6F:B0:0F:XX:XX] Connected
INFO:root:[80:6F:B0:0F:XX:XX] Resolved services
INFO:root:found write characteristic 0000ffd1-0000-1000-8000-00805f9b34fb
INFO:root:subscribed to notification 0000fff1-0000-1000-8000-00805f9b34fb
INFO:root:resolved services
INFO:root:reading params
DEBUG:root:create_read_request 256 => [255, 3, 1, 0, 0, 34, 209, 241]
INFO:root:characteristic_write_value_succeeded
INFO:root:characteristic_enable_notifications_succeeded
INFO:root:on_data_received: response for read operation
DEBUG:root:BT-TH-B00FXXXX => {'function': 'READ', 'battery_percentage': 87, 'battery_voltage': 12.9, 'battery_current': 2.58, 'battery_temperature': 25, 'controller_temperature': 33, 'load_status': 'off', 'load_voltage': 0.0,'load_current': 0.0, 'load_power': 0, 'pv_voltage': 17.1, 'pv_current': 2.04, 'pv_power': 35, 'max_charging_power_today': 143, 'max_discharging_power_today': 0, 'charging_amp_hours_today': 34, 'discharging_amp_hours_today': 34, 'power_generation_today': 432, 'power_consumption_today': 0, 'power_generation_total': 426038, 'charging_status': 'mppt'}
INFO:root:Exit: Disconnecting device: BT-TH-B00FXXXX [80:6F:B0:0F:XX:XX]

Dependencies

python3 -m pip install -r requirements.txt

Data logging

Supports logging data to local MQTT brokers like Mosquitto or Home Assistant dashboards. You can also log it to third party cloud services like PVOutput. See config.ini for more details. Note that free PVOutput accounts have a cap of one request per minute.

Example config to add to your home assistant configuration.yaml:

mqtt:
  sensor:
    - name: "Solar Power"
      state_topic: "solar/stats"
      unit_of_measurement: "W"
      value_template: "{{ value_json.pv_power }}"
    - name: "Battery SOC"
      state_topic: "solar/stats"
      unit_of_measurement: "%"
      value_template: "{{ value_json.battery_percentage }}"
# check output log for more fields

Custom logging

Should you choose to upload to your own server, the json data is posted as body of the HTTP POST call. The optional auth_header is sent as http header Authorization: Bearer <auth-header>

Example php code at the server:

$headers = getallheaders();
if ($headers['Authorization'] != "Bearer 123456789") {
    header( 'HTTP/1.0 403 Forbidden', true, 403 );
    die('403 Forbidden');
}
$json_data = json_decode(file_get_contents('php://input'), true);

Compatibility

Device	Adapter	Tested
Renogy Rover/Wanderer/Adventurer	BT-1	✅
Renogy Rover Elite	BT-2	✅
RICH SOLAR 20/40/60	BT-1	❓
SRNE ML24/ML48 Series	BT-1	❓

References

• Olen/solar-monitor
• corbinbs/solarshed
• Rover 20A/40A Charge Controller—MODBUS Protocol