ESP32 AIOBLE writing byte array from client fails

[aaronsaray]

Hello - apologies if any of these words aren't correct (programmer, just not a Python one) - also lmk if I need to move this somewhere else.

I am trying to connect to a BLE device (Bedjet) and turn on the fan. I have been able to do this with nrf Connect on an android (I'm on a mac - apologies for the screenshots here).

I believe from trial and error, I have to send a bytearray of 1, 2 to the write characteristic. I connect to the service, get the characteristic, and then write to it.

When I run this code, the bedjet device does not respond. (I have been able to query it for other values, so I know I can at least read characteristics - and the characteristic I'm writing to does have the write permission)

Here is my code to demonstrate this issue:

import aioble
import asyncio
from bluetooth import UUID

async def main():
    bedJetResult = None

    async with aioble.scan(duration_ms=5000, interval_us=30000, window_us=30000, active=True) as scanner:
        async for result in scanner:
            if result.name() is 'BEDJET_V3':
                bedJetResult = result

    if not bedJetResult:
        raise RuntimeError('Can not find the bedjet v3 device')

    try:
        connection = await bedJetResult.device.connect(timeout_ms=2000)
        print('Connected')
    except asyncio.TimeoutError:
        raise RuntimeError('Timeout Connecting')
    
    async with connection:
        print('connect to the service')
        service = await connection.service(UUID('00001000-bed0-0080-aa55-4265644a6574'))
        print('connected')

        print('getting control characteristic')
        control_characteristic = await service.characteristic(UUID('00002004-bed0-0080-aa55-4265644a6574'))
        print('retrieved', control_characteristic)

        print('attempting to set mode')
        value = bytearray(b'\x01\x02')
        control_characteristic.write(value)
        print('sent')

asyncio.run(main())

I did this with nRF connect. Here is a picture of how I entered the 'byte array'

And then here is a screenshot of the debug logs from the logger. This worked.

I'm sure I'm missing something simple - but I've tried so many different options for the formatting. Any help would be greatly appreciated.