I did not get any email notification so my response is a little bit late ...
Yes i placed it as close as possible to the rotational axis
![Wink ;-)](./images/smilies/icon_e_wink.gif)
I decaped one but i could not see any damaged. Maybe microcracks or just cheap soldering and components.
The other ESP8266 is working still without problems
![Smile :-)](./images/smilies/icon_e_smile.gif)
I'm actual finished!
https://im-pro.at/index.php/projekte/2018-pov
If you live in Vienna I will display this project on the Maker Faire (https://makerfairevienna.com/) STAND E84
greetings
Patrick