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New ESP-12S Module

PostPosted: Wed Sep 14, 2016 3:33 pm
by buchacho
I tried searching here, but did not find any mention of the new ESP-12S modules. Does anyone know what the difference is from the previous F model besides removing the pads from the bottom edge? The FCC ID indicates it was recently approved.

ESP-12S.jpg

Re: New ESP-12S Module

PostPosted: Wed Sep 14, 2016 4:07 pm
by lethe
The layout looks cleaner, but apart from the missing bottom pins, there doesn't seem to be any major difference.
See https://fccid.io/document.php?id=3087389 vs. https://fccid.io/document.php?id=2752712

The new layout is less cramped and only places components at 0° and 90° angles, so I guess the redesign was mostly for assembly reasons (possibly faster/cheaper pick & place, higher yield).

Re: New ESP-12S Module

PostPosted: Thu Sep 15, 2016 2:24 am
by buchacho
The holes are gone inside the pads. I wonder if there are any wifi performance improvements.

*edit* They are the same size.

Re: New ESP-12S Module

PostPosted: Thu Sep 15, 2016 2:45 am
by Barnabybear
Hi, I always suspected that the pins that are missing on this unit were broken out so the the flash could be accessed directly whilst holding CH_PD low. It looks like no one is programing that way so they have been dropped in favor of a slightly smaller form factor. As stated above the new layout may be faster to produce and looks to have slightly better internal clearance to the sreening can.