The hardware looks interesting, it should run OpenWRT nicely, and the USB port on board would be handy for adding a WiFi module, audio card and other devices.

The hardware looks interesting, it should run OpenWRT nicely, and the USB port on board would be handy for adding a WiFi module, audio card and other devices. Here's some more data about the CPU and RF module used: http://www.hytic.net/upload/files/2015/09/REALTEK-RTL8196E.pdf http://www.hytic.net/upload/files/2015/09/REALTEK-RTL8196E.p... https://developer.tuya.com/en/docs/iot/zigbeetyzs4module?id=K989rhycrz23f https://developer.tuya.com/en/docs/iot/zigbeetyzs4module?id=... (last one needs login for full datasheet)