I’ve kept working on the Tinker Board, and with a nudge from Myy , have gotten the WiFi driver to work on Armbian under kernel 4.12. In 4.12 the RTL8723bs driver was added to Staging, so it can be enabled without any patching to the kernel itself short of the device tree for the Tinker Board. Now for that pesky reboot bug and Bluetooth…
As always, give me a yell over at the Armbian forums,