I used MySensors to create a privacy friendly smart home demonstrator called Candle. Quite a few people are building it, but they may not even realise they are using MySensors.
In this project my own attention certainly has shifted a bit. Cheap Zigbee dongles and devices aid my goal of moving Candle in a more consumer friendly direction, so that people could just buy most of the parts ready-to-go, and still keep everything local. Some devices will still be MySensors devices, simply because there aren't any privacy friendly alternatives that I know of. But a temperature and humidity sensor, those use Zigbee for me now. And I'm moving the privacy features from the arduino code into the central controller instead.
Speculation about other factors:
- Practical Arduino hardware education isn't happening right now because of covid. And even there, there are so many hardware options now. Microbits, ESP32, etc.
- I've also noticed people asking about standardisation, and caring about interoperability.
- There are many more products available now. Edge cases are being catered to, e.g. gardening.
Things that might help for me:
- I really wish there was a cheap, widely available Arduino akin to the RF-Nano, but with RFM69 433Mhz. MySensors has always had range issues for me on 2.4ghz.
- The MySensors implementation doesn't make it easy for devices to describe the UI they would like. E.g. if a device is read-only or toggle-able is currently dependent on the type, instead of being a factor that can be set for each sensor type independently.
A new website with a strong focus on new users, USP's (cheap privacy & friendly, or just fun, educational and artisanal) and up-to-date examples might help.
This all may sound critical, but that's not the intention. I really dig MySensors. It's definitely in my toolbelt.