ozzyczech / mho-c401

Read Temperature and Huminidy from MHO-C401 with Python3

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mho-c401's Issues

Connection to MHO-C401 not possible

Hello OzzyCzech,

I have tried to use your Python scripts to connect to my MHO-C401 device, but without success. The scripts have been started from a Raspberry Pi with Python 3.7.3 according to your guide https://ozzyczech.cz/iot/read-temperature-and-huminidy-from-mho-c401. Here is the output of the script list-services.py with corrected MAC address of my device:

pi@xxxxxxxx:~/BT $ python3 list-services.py
Connecting to device...
Traceback (most recent call last):
  File "list-services.py", line 6, in <module>
    for service in device.getServices():
  File "/usr/local/lib/python3.7/dist-packages/bluepy/btle.py", line 481, in getServices
    return self.services
  File "/usr/local/lib/python3.7/dist-packages/bluepy/btle.py", line 477, in services
    self._serviceMap = self.discoverServices()
  File "/usr/local/lib/python3.7/dist-packages/bluepy/btle.py", line 459, in discoverServices
    rsp = self._getResp('find')
  File "/usr/local/lib/python3.7/dist-packages/bluepy/btle.py", line 407, in _getResp
    resp = self._waitResp(wantType + ['ntfy', 'ind'], timeout)
  File "/usr/local/lib/python3.7/dist-packages/bluepy/btle.py", line 368, in _waitResp
    raise BTLEGattError("Bluetooth command failed", resp)
bluepy.btle.BTLEGattError: Bluetooth command failed (code: 14, error: Request attribute has encountered an unlikely error)
pi@xxxxxxxx:~/BT $

Do you have an idea why it is not working? My MHO-C401 seems to work properly. I can read the temperature and the humidity using an ESP32 with Tasmota 9.1.0 without any issues.

Second question: I have seen, that you don't need the encryption key to read the temperature and the humidity. How is it possible? I think, the connection is encrypted.

Thank you in advance!

Kind regards
Flugente-19