I have HA Green and it has been great! The only issue I have is that the BT adapter listed below, which controls my SwitchBot blinds, has dropped out after a year. It has been fine for a while
This is what I purchased:
The name on the BT says TechKey, but in HA, it is listed as Realtek Bluetooth. Is there a fix I’m missing to stop it from dropping?
If I reseat it, it works again, but I’m tired of having to go to the IDF room to keep doing this.
Make sure you use an USB extension cable to move the adapter away from the USB ports on the Green.
The USB port chips cause electromagnetic noise in the same frequency spectrum as Bluetooth, WiFi, Zigbee and Thread use.
WiFi is powerful enough to handle it, but the others often have issues.
Wow…really. OK I am plugged directly into the HA Green device. So I need a little distance from the HA Green. So much to learn… Thx
I’m afraid a USB extension cable might not fix your issue. Read this and start thinking about getting a supported adapter
Given that modern WLAN cards (802.11ac/ wifi 5 or newer) require USB 3.x for full speed, it’s unlikely that USB extension cables would improve the situation. This only works for USB 2.x devices (e.g. zigbeem thread, z-wave, etc.), but modern WLAN cards are USB 3.x. A USB 3.x extension cable is probably worse in terms of interference (shielding), than the USB host ports - while a USB 2.x extension limits the USB WLAN card, both in terms of throughput (worse for WLAN, than for BT), but also in terms of power delivery (modern WLAN cards may have quite some peak power draw).
It did not. I added the extension this morning and the shades did not close at sunset. I found in HA Green the BT Realtek Bluetooth 5.3 Radio disconnected again!
Dang!
Is there anything else I can buy like an ESPHome or something that has BT on it so I don’t have to use the Realtek Bluetooth 5.3 Radio anymore.
It is Bluetooth we are working with here not WiFi.
It is the chips controlling the ports and not the ports themself that cause the electromagnetic noise, so the extension cable will not work as an antenna.
It is a well-known fact for USB3 ports and not just on the Pi/Green/Yellow.
That is why the SkyConnect (or whatever it is now called) comes with an extension cable as standard.
The extension cable does not solve it all, but it should be tried first.
There are other adapters that can be used. ShadowFist gave the link to the HA Bluetooth documentation page and they list many options.
Alternatively you can flash an ESP device with ESPHome with a BT Proxy extension or use one of the ready-made projects for it.
Newbie at all this, so I did order the basic EPS32
If I understand correctly from what I think I read, I can make one of those a Bluetooth module, so I can have my SwitchBots connect to it via Bluetooth… correct?
If I can successfully get to that point, do I still use the long extension cable from the Home Assistant Green, or does the EPS not have the interference factor like my existing BT module?
Correct. Just follow my links .
The ESP device connects to your network through WiFi.
The USB cable is only for power once it is flashed, so you can place it where you like with an USB charger as power supply.
@WallyR I’m over 50, but with this stuff, I feel like I am in the 3rd grade.
I can connect EPS32 via Wifi for payment anywhere in my home.
Also, at the same time, it can be a BT proxy so that I can connect all my SwitchBots?
I was under the impression that once set up, it would only be a BT Proxy device.
Welcome to the club. 
It will become easier, so hang in there.
Correct.
The ready-made project are only a BT proxy.
If you do the BT proxy extension, then you can add other functionality also.