is never seen before. At first I thought it was a heatsink,
but there does not appear to be any component under the metal. Here are side and top views for your reference:
The three pins over it are for connecting RC servo input, and are not connected.
The lower metal tab is connected to Vcc as far as I can tell.
don.pincott
2017/1/4 14:25:32
It was truly informative. Your post is very useful.Many thanks for sharing!