1) install usb wifi for raspberry pi 2B

please reference to install usb wifi module(rtl8811cu)

2) install homeassistant(not hass.io)

please reference to install homeassistant on ubuntu
if you can't building it, try these:
sudo apt-get install build-essential libssl-dev libffi-dev python-dev
sudo apt-get install build-essential libssl-dev libffi-dev python3-dev python3-venv python3-pip
sudo apt-get install python3 python3-dev python3-venv python3-pip libffi-dev libssl-dev
add, reference to installation raspberry-pi
should upgrade to python3.7. how to upgrade to python3.7
shift to python3.7.6 : https://www.jb51.net/article/163117.htm

above commands can sovle my problems(I can't upgrade from python3.6 to python3.7, I use ubuntu19 for pi3solved python version problems.

reference to: python3.6 upgrade to 3.7
https://github.com/pyenv/pyenv-installer
https://community.home-assistant.io/t/python-upgrade/120454/96

3) setup raspberry as a router(as AP)

I want to test esp01 connect "raspberry router" by WiFi(raspberry router use the lan to connect to internet), if i have got success i can save one wireless router for demo system.
i can tell u how to setup that, if i have finished those tests.
please wating......
i have tried and tested to setup wireless AP in xubuntu, it's so simple that you just click on the net icon(the right of status cloum), then try do it.

4）install microsoft Edge on iOS10.3.3

it can supports the floorplan on homeassistant 0.96.5!!! it's a good news!!!
but it's very strange, it can't work again after i've rebooted iPad.

5) install dolphin on iOS10.3.3

floorplan working again even after i have reboot the iPad(iOS10.3.3)
test:
1, reboot iPad; not restart homeassistant0.96.5 ------ working fine
2, not reboot iPad; restart homeassistant0.96.5 ------ working fine
3, reboot iPad again; ------ working fine then restart homeassistant0.96.5 ------ working pretty good!!!
on full screen mode of dolphin, the ui is the best compare with other web browser.