ESP8266 Community Forum

- Sat Oct 22, 2016 10:48 am #56956

And 4MB flash. Very neat looking design.

Thank you! So, you think that the ESP-01S has 4MB flash too?

- Mon Oct 24, 2016 12:00 pm #57046 I couldn't believe they had a certified module but a visit to fccid.io (third party site that simplfies FCC lookups) provied the certificate.
There is a ESP8266-12S that is certified but that is all I could find, for now.
The ESP8266-100 have 8MB instead of 4MB but are not certified but for production the -07S sound like the way to go, aliexpress https://goo.gl/eX5UnD has -07S $2.05 -12E $1.57 -12F $1.75 http://www.wilwin-ic.com/showpro.php?pcode=ESP-07S $1.92 http://www.electrodragon.com/product/es ... e-esp8266/ $2.40 -- Electrondragon has the -01S it is not FCC but it does have a 25Q80 or 1MB flash $2.40 They also have an EPS8285 module but it's connection is via fingers or edge card? No means to solder it to PCB.
https://www.itead.cc/psf-a85.html PSF-A85 or PSF-B85 $2.10 for a EPS8285 module with external or ceramic antenna.
Update: I revisited the ESP8285 module at Electrondragon and found http://www.electrodragon.com/w/ESP8285
They route a grove on a PCB and stick the board into the grove! I'm going for it! this is cheaper than headers or building a castellated PCB, what will happen to the copper pads when/if they are sit by the router?

- Mon Oct 24, 2016 2:08 pm #57053

Electrondragon has the -01S it is not FCC but it does have a 25Q80 or 1MB flash $2.40

I agree with this - the ESP-01S looks like a 1MB flash.

Update: I revisited the ESP8285 module at Electrondragon and found http://www.electrodragon.com/w/ESP8285
They route a grove on a PCB and stick the board into the grove! I'm going for it! this is cheaper than headers or building a castellated PCB, what will happen to the copper pads when/if they are sit by the router?

I've had a my own esp8266 model fabbed by OSH Park, complete with 1mm pitch castellations:

http://www.packom.net/esp8266/2016/09/2 ... esign.html

OSH Park doesn't formally support castellations, but does provide a guide for getting the best out of them and doesn't charge extra. I plan an new blog post sometime with the results, but in a nutshell they were usable - main issue if where they'd panelised on the castellations and when I aggressively trimmed the extra I screwed up the castellations.

Other fab houses seem to charge a fairly hefty one-off fee for castellations.

I personally don't really like right angle insertion into a routed slot, but it does seem a reasonable approach.

esp8266 otb-iot software - https://github.com/piersfinlayson/otb-iot
esp8266 otb-iot documentation - https://otb-iot.readthedocs.io/
esp8266 related blog - http://www.packom.net/

- Mon Oct 24, 2016 4:05 pm #57059 For just getting things working without spending too much the side mounted is cheap. I doubt they will produce FCC certified modules that use that mounting technique but for simple one-off projects it would work. I do like the relay module that board was used to control, simple, small and cost effective.