I moved the base to my earbuds downstairs and connected to this Pi.  Some notes:

Some of these things get cached, here B1 shows up twice at different
addresses:

devices
Device CB:20:07:42:99:64 B1
Device F3:66:48:29:CA:7D IDTW211R
Device FE:46:6D:40:FC:43 B1
[CHG] Controller B8:27:EB:1F:69:7C Discoverable: no

info FE:46:6D:40:FC:43
Device FE:46:6D:40:FC:43 (public)
        Name: B1
        Alias: B1
        Class: 0x00240404
        Icon: audio-card
        Paired: no
        Trusted: no
        Blocked: no
        Connected: no
        LegacyPairing: no
        ManufacturerData Key: 0x2549
        ManufacturerData Value:
  96 52 ef 52 40 dc ca da                          .R.R@...
        RSSI: -57

trust FE:46:6D:40:FC:43
[CHG] Device FE:46:6D:40:FC:43 Trusted: yes
Changing FE:46:6D:40:FC:43 trust succeeded
[bluetooth]# pair FE:46:6D:40:FC:43
Attempting to pair with FE:46:6D:40:FC:43
[CHG] Device FE:46:6D:40:FC:43 Connected: yes
[CHG] Device FE:46:6D:40:FC:43 Modalias: bluetooth:v05D6p000Ad0240
[CHG] Device FE:46:6D:40:FC:43 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FE:46:6D:40:FC:43 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Device FE:46:6D:40:FC:43 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FE:46:6D:40:FC:43 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FE:46:6D:40:FC:43 UUIDs: 00001124-0000-1000-8000-00805f9b34fb
[CHG] Device FE:46:6D:40:FC:43 UUIDs: 00001200-0000-1000-8000-00805f9b34fb
[CHG] Device FE:46:6D:40:FC:43 ServicesResolved: yes
[CHG] Device FE:46:6D:40:FC:43 Paired: yes
Pairing successful
[CHG] Device FE:46:6D:40:FC:43 ServicesResolved: no
[CHG] Device FE:46:6D:40:FC:43 Connected: no

 connect FE:46:6D:40:FC:43
Attempting to connect to FE:46:6D:40:FC:43
[CHG] Device FE:46:6D:40:FC:43 Connected: yes
Connection successful
[CHG] Device FE:46:6D:40:FC:43 ServicesResolved: yes

:info FE:46:6D:40:FC:43
Device FE:46:6D:40:FC:43 (public)
        Name: B1
        Alias: B1
        Class: 0x00240404
        Icon: audio-card
        Paired: yes
        Trusted: yes
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: Handsfree                 (0000111e-0000-1000-8000-00805f9b34fb)
        UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        Modalias: bluetooth:v05D6p000Ad0240
        ManufacturerData Key: 0x2549
        ManufacturerData Value:
  96 52 ef 52 40 dc ca da                          .R.R@...
        RSSI: -57

rebooting for alsa to maybe pick it up

Still paired?:  [yes]
info  FE:46:6D:40:FC:43
Device FE:46:6D:40:FC:43 (public)
        Name: B1
        Alias: B1
        Class: 0x00240404
        Icon: audio-card
        Paired: yes
        Trusted: yes
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: Advanced Audio Distribu.. (0000110d-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: Handsfree                 (0000111e-0000-1000-8000-00805f9b34fb)
        UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        Modalias: bluetooth:v05D6p000Ad0240

alsa didn't find it yet, probably because it's a HID.  More research needed.

 aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones
[bcm2835 Headphones]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3

It's only seeing native Pi stuff.  But that's an alsa thing, not a bluetooth
one.  I knew this was a HID device but my phone didn't care, it just
connected to the audio sink in it.  That's what I want the Pi to do
too, at least now.  But according to the advertising these also have
microphones in them.

On 9/26/20, Alan Corey <alan01...@gmail.com> wrote:
> bluetoothctl's info feature can be useful to see what states devices
> are in even if you're not pairing with them.  Especially devices with
> few buttons.
>
> Yes there's a time limit because being discoverable is considered
> vulnerable.
>
> On 9/26/20, Gene Heskett <ghesk...@shentel.net> wrote:
>> On Saturday 26 September 2020 06:48:11 Alan Corey wrote:
>>
>>> Bring your devices closer together at least until you get them paired.
>>>  BT doesn't have great range.  There are covid tracing schemes which
>>> figure if you got within BT range you're in danger. 20 feet or so
>>> should be OK.  Also heavy WiFi use disrupts it since they're both in
>>> the same frequency band.
>>>
>>> A device may be discoverable only when it's first turned on but there
>>> has to be a way.  My ear buds have one button each and the LEDs flash
>>> differently: red and blue instead of just red.  It's easiest to start
>>> with them all within reach until they're set up.  Playing sound my ear
>>> buds aren't 100% reliable 20 feet away.  At one job a receptionist had
>>> a BT headset, they worked within that room, not beyond.  A niece had a
>>> BT headset for hands-free driving on her cell phone, mostly didn't
>>> work outside her car.
>>>
>>> With my ear buds a long press on the one button powers them on and
>>> makes them discoverable for about 1 minute.
>>
>> I wasn't aware there was a time limit. Anyway, the transmitter the phone
>> will need to pair with is about 3 weeks away, so I'll suggest we shelve
>> this until that kit arrives.
>>
>>> On Sat, Sep 26, 2020, 4:22 AM deloptes <delop...@gmail.com> wrote:
>>> > Gene Heskett wrote:
>>> > > Can anyone else contribute here?
>>> >
>>> > for the audio you may need the pulse bluetooth module package.
>>> >         pulseaudio-module-bluetooth
>>
>>
>> Cheers, Gene Heskett
>> --
>> "There are four boxes to be used in defense of liberty:
>>  soap, ballot, jury, and ammo. Please use in that order."
>> -Ed Howdershelt (Author)
>> If we desire respect for the law, we must first make the law respectable.
>>  - Louis D. Brandeis
>> Genes Web page <http://geneslinuxbox.net:6309/gene>
>>
>>
>
>
> --
> -------------
> No, I won't  call it "climate change", do you have a "reality problem"? -
> AB1JX
> Cities are cages built to contain excess people and keep them from
> cluttering up nature.
> Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach
>


-- 
-------------
No, I won't  call it "climate change", do you have a "reality problem"? - AB1JX
Cities are cages built to contain excess people and keep them from
cluttering up nature.
Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach

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