I like the html5 app on the Venus But it was not ease to modify. So I used Paho JavaScript Client MQTT and made an HTML page called index.html. I up loaded it, paho, and 2 bmp files with sftp to /var/www/venus/kelly/. I open http://venus.local/kelly in edge. this works with the venus and a 15 kw Quattro. I would like if get some to see if it works with other inverters. I could not upload the files here. So the files are at horns.pw/temp