emwadmin
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EMWE-3165-A Dev Board Schematics

Sun Jul 19, 2015 4:31 am

Leslie from MXCHIP has posted in the comments on both the Hackaday article as well as in the comments of the SeeedStudio product page. In that post on Seeed she provided a link to a Dropbox folder which contained schematics for their development board. I've attached the PDFs here for easy viewing.
Attachments
SCHEMATIC1 _ 02 M24LR04E&SHT10.pdf
(30.16 KiB) Downloaded 672 times
SCHEMATIC1 _ 03 USB&&UART.pdf
(39.03 KiB) Downloaded 509 times
SCHEMATIC1 _ 04 Power.pdf
(34.01 KiB) Downloaded 379 times
EMWE-3165-A 使用说明.pdf
(303.08 KiB) Downloaded 482 times
SCHEMATIC1 _ 01 EMWE-3165.pdf
(43.59 KiB) Downloaded 614 times

moenad
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Re: EMWE-3165-A Dev Board Schematics

Fri Sep 11, 2015 6:04 pm

To be honest, that's the worst development board... I already have one and they use 2.0 mm headers rather than the standards. Also come one, all this size and they couldn't have the module soldered from the inside, the antenna inside rather than outside the board for extra spaces... IT came a bit sticky/glued and it's huge for no single reason.

emwadmin
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Re: EMWE-3165-A Dev Board Schematics

Sat Sep 12, 2015 9:21 pm

It's certainly true that the dev board has some non-ideal qualities - and the 2.00mm pitch headers make it hard to work with - but everyone's got to start somewhere. If you haven't looked at it yet, check out the WiFiMCU dev doard by DoIT -- check out the other forum posts for more details on it - it's definitely a more user-friendly platform to work with.

As for the antenna position - it's mounted hanging off the board for improved RF performance, not for space/size reasons. Optimal radio performance i achieved when there's no copper / metal near the antenna. In situations where the module (antenna) cannot be mounted in the exact corner of the host PCB, it's common practice to hang it over the edge. In this regard, I'd actually say this is a positive feature of eval board that they considered WiFI performance.

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emilfr
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Re: EMWE-3165-A Dev Board Schematics

Sun Sep 13, 2015 1:21 pm

This board is almost exactly the same as the board for the older EMW3162... except for the 2 mm breakout headers, that make this one rather hard to work with. This board also includes the huge NFC antenna that was on both EMW3162 boards, however, non of these 3 boards have had the NFC/I2C EEPROM populated, so it's just wasted space... though I've used it to glue on small breakboards.
Maintainer of the EMW3162 and EMW3165 port of Broadcom WICED.
== Github == Gitter.im chatroom == WICED subforum == Getting started with WICED on EMW ==

-- Neither I nor the WICED for EMW project are affiliated with MXCHIP or Broadcom --


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