Feature Request - Support for Meter Pro #251

bobbinz · 2024-09-30T18:03:46Z

Hi,

I just got a meter pro and was hoping to get it added to Home Assistant via Bluetooth.

Happy to help as I have the device now!

Thanks,
Adam

talormanda · 2024-10-17T03:00:14Z

I have the Meter Pro and the Meter Pro (CO2). Not sure what I can do to help, but I am free for anything. I am just unsure how polling bluetooth to grab the necessary data works. If someone could explain, I am willing to try.

Mar1usW3 · 2024-10-17T17:23:57Z

Would be great to have the meter pro (co2) in HA. Can also provide information.

talormanda · 2024-10-22T04:10:06Z

Advertisement data. MAC is B0:E9:FE:54:32:15

{
          "name": "WoTHPc",
          "address": "B0:E9:FE:54:32:15",
          "rssi": -54,
          "manufacturer_data": {
            "2409": {
              "__type": "<class 'bytes'>",
              "repr": "b'\\xb0\\xe9\\xfeT2\\x15\\xb7\\xe4\\x07\\x9b\\xa4\\x007\\x02\\xd5\\x00'"
            }
          },
          "service_data": {
            "0000fd3d-0000-1000-8000-00805f9b34fb": {
              "__type": "<class 'bytes'>",
              "repr": "b'5\\x00d'"
            }
          },
          "service_uuids": [
            "00001800-0000-1000-8000-00805f9b34fb",
            "00001801-0000-1000-8000-00805f9b34fb",
            "0000fd3d-0000-1000-8000-00805f9b34fb",
            "cba20d00-224d-11e6-9fb8-0002a5d5c51b"
          ],
          "source": "00:1A:7D:DA:71:08",
          "advertisement": [
            "WoTHPc",
            {
              "2409": {
                "__type": "<class 'bytes'>",
                "repr": "b'\\xb0\\xe9\\xfeT2\\x15\\xb7\\xe4\\x07\\x9b\\xa4\\x007\\x02\\xd5\\x00'"
              }
            },
            {
              "0000fd3d-0000-1000-8000-00805f9b34fb": {
                "__type": "<class 'bytes'>",
                "repr": "b'5\\x00d'"
              }
            },
            [
              "00001800-0000-1000-8000-00805f9b34fb",
              "00001801-0000-1000-8000-00805f9b34fb",
              "0000fd3d-0000-1000-8000-00805f9b34fb",
              "cba20d00-224d-11e6-9fb8-0002a5d5c51b"
            ],
            null,
            -54,
            [
              "/org/bluez/hci0/dev_B0_E9_FE_54_32_15",
              {
                "Address": "B0:E9:FE:54:32:15",
                "AddressType": "public",
                "Alias": "WoTHPc",
                "Paired": false,
                "Bonded": false,
                "Trusted": false,
                "Blocked": false,
                "LegacyPairing": false,
                "RSSI": -54,
                "Connected": false,
                "UUIDs": [
                  "00001800-0000-1000-8000-00805f9b34fb",
                  "00001801-0000-1000-8000-00805f9b34fb",
                  "0000fd3d-0000-1000-8000-00805f9b34fb",
                  "cba20d00-224d-11e6-9fb8-0002a5d5c51b"
                ],
                "Adapter": "/org/bluez/hci0",
                "ManufacturerData": {
                  "2409": {
                    "__type": "<class 'bytearray'>",
                    "repr": "bytearray(b'\\xb0\\xe9\\xfeT2\\x15\\xb7\\xe4\\x07\\x9b\\xa4\\x007\\x02\\xd5\\x00')"
                  }
                },
                "ServicesResolved": false,
                "AdvertisingFlags": {
                  "__type": "<class 'bytearray'>",
                  "repr": "bytearray(b'\\x06')"
                },
                "ServiceData": {
                  "0000fd3d-0000-1000-8000-00805f9b34fb": {
                    "__type": "<class 'bytearray'>",
                    "repr": "bytearray(b'5\\x00d')"
                  }
                },
                "Name": "WoTHPc"
              }
            ]
          ],
          "device": {
            "__type": "<class 'bleak.backends.device.BLEDevice'>",
            "repr": "BLEDevice(B0:E9:FE:54:32:15, WoTHPc)"
          },
          "connectable": true,
          "time": 243335.865268782,
          "tx_power": null
        }
		
{
              "name": "WoTHPc",
              "address": "B0:E9:FE:54:32:15",
              "rssi": -54,
              "advertisement_data": [
                "WoTHPc",
                {
                  "2409": {
                    "__type": "<class 'bytes'>",
                    "repr": "b'\\xb0\\xe9\\xfeT2\\x15\\xb7\\xe4\\x07\\x9b\\xa4\\x007\\x02\\xd5\\x00'"
                  }
                },
                {
                  "0000fd3d-0000-1000-8000-00805f9b34fb": {
                    "__type": "<class 'bytes'>",
                    "repr": "b'5\\x00d'"
                  }
                },
                [
                  "00001800-0000-1000-8000-00805f9b34fb",
                  "00001801-0000-1000-8000-00805f9b34fb",
                  "0000fd3d-0000-1000-8000-00805f9b34fb",
                  "cba20d00-224d-11e6-9fb8-0002a5d5c51b"
                ],
                null,
                -54,
                [
                  "/org/bluez/hci0/dev_B0_E9_FE_54_32_15",
                  {
                    "Address": "B0:E9:FE:54:32:15",
                    "AddressType": "public",
                    "Alias": "WoTHPc",
                    "Paired": false,
                    "Bonded": false,
                    "Trusted": false,
                    "Blocked": false,
                    "LegacyPairing": false,
                    "RSSI": -54,
                    "Connected": false,
                    "UUIDs": [
                      "00001800-0000-1000-8000-00805f9b34fb",
                      "00001801-0000-1000-8000-00805f9b34fb",
                      "0000fd3d-0000-1000-8000-00805f9b34fb",
                      "cba20d00-224d-11e6-9fb8-0002a5d5c51b"
                    ],
                    "Adapter": "/org/bluez/hci0",
                    "ManufacturerData": {
                      "2409": {
                        "__type": "<class 'bytearray'>",
                        "repr": "bytearray(b'\\xb0\\xe9\\xfeT2\\x15\\xb7\\xe4\\x07\\x9b\\xa4\\x007\\x02\\xd5\\x00')"
                      }
                    },
                    "ServicesResolved": false,
                    "AdvertisingFlags": {
                      "__type": "<class 'bytearray'>",
                      "repr": "bytearray(b'\\x06')"
                    },
                    "ServiceData": {
                      "0000fd3d-0000-1000-8000-00805f9b34fb": {
                        "__type": "<class 'bytearray'>",
                        "repr": "bytearray(b'5\\x00d')"
                      }
                    },
                    "Name": "WoTHPc"
                  }
                ]
              ],
              "details": {
                "path": "/org/bluez/hci0/dev_B0_E9_FE_54_32_15",
                "props": {
                  "Address": "B0:E9:FE:54:32:15",
                  "AddressType": "public",
                  "Alias": "B0-E9-FE-54-32-15",
                  "Paired": false,
                  "Bonded": false,
                  "Trusted": false,
                  "Blocked": false,
                  "LegacyPairing": false,
                  "RSSI": -39,
                  "Connected": false,
                  "UUIDs": [],
                  "Adapter": "/org/bluez/hci0",
                  "ManufacturerData": {
                    "2409": {
                      "__type": "<class 'bytearray'>",
                      "repr": "bytearray(b'\\xb0\\xe9\\xfeT2\\x15\\xb6\\xe4\\x06\\x9b\\xa5\\x007\\x02\\xd5\\x00')"
                    }
                  },
                  "ServicesResolved": false,
                  "AdvertisingFlags": {
                    "__type": "<class 'bytearray'>",
                    "repr": "bytearray(b'\\x06')"
                  }
                }
              }
            }

bdraco · 2024-10-22T04:23:53Z

That was enough to know the decoding for the temp/humid is the same as the base pro model

I added support for decoding those in #256 so it should show up in the next HA update

I don't know how to decode the co2 data (if its there) although I suspect it is since its 3 bytes longer than the pro model without the c

bdraco · 2024-10-22T04:36:02Z

Its likely the CO2 data is in

b'\x007\x02\xd5\x00'

maybe the last 2 bytes?

>>> int.from_bytes(b'\xd5\x00','big')
54528
>>> int.from_bytes(b'\xd5\x00','little')
213

not sure what the device was reading at the time

talormanda · 2024-10-22T04:37:07Z

config_entry-bluetooth-e51677d7fc3ffc805c2e11f1b02b2619.json

Here is the entire file, if that helps. In case I missed something important. I am not well versed in what to look for yet.

bdraco · 2024-10-22T04:40:20Z

All the data looks like its there. The process to figure out the CO2 sensor value would be to turn on debug logging for homeassistant.components.bluetooth, and record the ManufacturerData field value for each CO2 value as the device reports on the screen new values. Usually I make a spreadsheet with a ManufacturerData and device reported value

# Example configuration.yaml entry
logger:
  default: info
  logs:
    homeassistant.components.bluetooth: debug

Once you have ~20 different values ManufacturerData and screen reading to compare with, that is usually enough to figure out how its encoded. Sometimes you need a lot more if they use partial byte encoding or a mistake is made comparing the ManufacturerData to the value on the screen in the spreadsheet

talormanda · 2024-10-22T04:53:03Z

Does IMAGE above work the same or do I have to enable it the way you posted?
After enabling, can I just log 20 different changes on the screen, and they will be in order on the debug log?

bdraco · 2024-10-22T04:54:40Z

The link in the image should work as well.

You'll need 20 different CO2 values on the screen with the timing the reading lined up to the timestamp in the log

bdraco · 2024-10-22T04:55:11Z

Its usually easier to ssh in an tail -f home-assistant.log | grep MAC_ADDRESS_TO_WATCH_FOR

talormanda · 2024-10-22T05:13:25Z

I see why you said it's better to do it yourself. I will try. It updates CO2 every 1 minute when plugged in, so this will take some time.

talormanda · 2024-10-22T05:16:03Z

If this looks good, I will continue. Here is one sample:

2024-10-22 01:09:36.719 DEBUG (MainThread) [homeassistant.components.bluetooth.manager] hci0 (00:1A:7D:DA:71:08) [connectable]: <BluetoothServiceInfoBleak name=WoTHPc address=B0:E9:FE:54:32:15 rssi=-45 manufacturer_data={2409: b'\xb0\xe9\xfeT2\x15\xd0\xe4\x01\x9b\xa4\x007\x02\xaa\x00'} service_data={'0000fd3d-0000-1000-8000-00805f9b34fb': b'5\x00d'} service_uuids=['00001800-0000-1000-8000-00805f9b34fb', '00001801-0000-1000-8000-00805f9b34fb', '0000fd3d-0000-1000-8000-00805f9b34fb', 'cba20d00-224d-11e6-9fb8-0002a5d5c51b'] source=00:1A:7D:DA:71:08 connectable=True time=249919.469503794 tx_power=None> match: set()

bdraco · 2024-10-22T05:21:29Z

That looks like the right data. The goal is to produce something like this... https://dpaste.org/npg3j

CO2 value	manufacturer_data
xyz	`b'\xb0\xe9\xfeT2\x15\xd0\xe4\x01\x9b\xa4\x007\x02\xaa\x00'`
xyz	`b'\xb0\xe9\xfeT2\x15\xd0\xe4\x01\x9b\xa4\x007\x02\xaa\x00'`
xyz	`b'\xb0\xe9\xfeT2\x15\xd0\xe4\x01\x9b\xa4\x007\x02\xaa\x00'`

....

talormanda · 2024-10-22T05:27:56Z

I setup a log to capture 20 updates using

tail -f home-assistant.log | grep "B0:E9:FE:54:32:15" | grep "manufacturer_data" | awk '{print NR ": " strftime("%Y-%m-%d %H:%M:%S") ": " $0}' | tee -a switchbotco2.log

Example output:
1: 2024-10-22 01:26:32: 2024-10-22 01:26:32.766 DEBUG (MainThread) [homeassistant.components.bluetooth.manager] hci0 (00:1A:7D:DA:71:08) [connectable]: <BluetoothServiceInfoBleak name=WoTHPc address=B0:E9:FE:54:32:15 rssi=-51 manufacturer_data={2409: b'\xb0\xe9\xfeT2\x15\xe0\xe4\x07\x9a\xa5\x007\x03\x19\x00'} service_data={'0000fd3d-0000-1000-8000-00805f9b34fb': b'5\x00d'} service_uuids=['00001800-0000-1000-8000-00805f9b34fb', '00001801-0000-1000-8000-00805f9b34fb', '0000fd3d-0000-1000-8000-00805f9b34fb', 'cba20d00-224d-11e6-9fb8-0002a5d5c51b'] source=00:1A:7D:DA:71:08 connectable=True time=250935.516698236 tx_power=None> match: set()

Do I need to do anything else special with the timestamp? I figured it can just be logged when the command fires off, no? (other than recording the CO2 value by hand obviously)

bdraco · 2024-10-22T05:31:07Z

The timestamps aren't usually important except for making sure you got the hand recorded value correct. I usually note the time when I write down the values and than double check them against the log timestamps later to make sure I didn't get any out of order or incorrect as one wrong one can make it harder to figure out how its encoded as you might miss the pattern

talormanda · 2024-10-22T05:32:16Z

The timestamp confuses me.

time=250935.516698236 is this the time since the bluetooth service was started?

talormanda · 2024-10-22T07:03:17Z

CO2 | manufacturer_data
-- | --
645 | b'\xb0\xe9\xfeT2\x15 \xe4\t\x99\xa8\x00#\x02\x85\x00'
1126 | b'\xb0\xe9\xfeT2\x15!\xe4\t\x99\xa5\x00#\x02\x85\x00'
769 | b'\xb0\xe9\xfeT2\x15#\xe4\t\x99\xa5\x00#\x04f '
658 | b'\xb0\xe9\xfeT2\x15%\xe4\t\x99\xa4\x00#\x02\xa1\x00'
636 | b'\xb0\xe9\xfeT2\x15+\xe4\t\x99\xa4\x00#\x02\xaa\x00'
613 | b'\xb0\xe9\xfeT2\x15+\xe4\t\x99\xa4\x00#\x02\xaa\x00'

Got these 6 so far. If it looks okay, I'll get more later on. Taking a break.

talormanda · 2024-10-22T07:32:54Z

When I run:

data = b'\xb0\xe9\xfeT2\x15#\xe4\t\x99\xa5\x00#\x04f '
co2_bytes = data[13:15] 
co2_value = int.from_bytes(co2_bytes, 'big')
print(co2_value)

with the data I pulled at timestamp 255089.206798486, I get a value of 1126, which is the CO2 value I recorded.

bdraco · 2024-10-22T17:21:37Z

home-assistant/core#128991

saeedesmaili · 2024-11-16T11:44:35Z

Why my Meter Pro devices are detected as light strips? What should I do to be able to add them properly into HomeAssistant? I'm using the latest version (2024.11.2).

saeedesmaili · 2024-11-16T11:46:12Z

Ah, I should've asked in the HomeAssistant issues (still would appreciate if anyone knows what I should do).

bdraco mentioned this issue Oct 22, 2024

Add basic support for the Meter Pro #254

Merged

bdraco mentioned this issue Oct 22, 2024

Add support for reading the co2 value from meter pro #260

Merged

bdraco closed this as completed in #260 Oct 22, 2024

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Feature Request - Support for Meter Pro #251

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Feature Request - Support for Meter Pro #251

Feature Request - Support for Meter Pro #251

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