The tool you want to have for your Smart Home
For zzh! CC2652R Multiprotocol RF Stick
Like many of you, you have a reason to come here. I started out with a CC2531. It worked and because of it has been modified with an external antenna, I had no connection problems. However, after my network grow bigger when adding more devices, I became suspicious. Even having great lqi, messages got lost, switches did not react etc. I added more routers, but this was not the problem. Digging down into the configuration of zigbee2mqtt you will find a setting "adapter_concurrent" which reads "configure adapter concurrency (e.g. 2 for CC2531 or 16 for CC26X2R1)". OK, this is where I understood I had a problem. With only two messages which can be processed in parallel, after scaling well beyond 50 devices in my network it had collisions more often than I was thinking. Checking even more, you get an other detail: The CC2531 can handle 20 Zigbee version 3.0 devices. OK, since all my stuff was quite new, I well exceeded this limit. The CC2652R is able to handle 100, which should be enough for some time. Immediately ordering this stick, switching it out and all my problems were resolved. No lost messages, lqi improved (not much, but more stable at high levels). If you started to become frustrated with your CC2531, you are at the right place.
