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Author Topic: WIFI Module Identification  (Read 4043 times)

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Offline diyaudioTopic starter

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WIFI Module Identification
« on: May 19, 2014, 11:42:19 am »
Hi Guys

I bought this off ebay, now I need the datasheet for it, Google doesn't reveal much, does anyone know who makes this? or where I can find a datasheet for it?.

Thanks 
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Offline firewalker

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Re: WIFI Module Identification
« Reply #1 on: May 19, 2014, 12:28:15 pm »
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Offline diyaudioTopic starter

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Re: WIFI Module Identification
« Reply #2 on: May 19, 2014, 12:44:28 pm »
Quote from: firewalker on May 19, 2014, 12:28:15 pm
Have a look to the link bellow.

http://www.ebay.com/itm/HC-21-Embed-WIFI-to-Serial-Port-Wireless-Module-UART-HC21-/251471741483

Alexander.

Many thanks! you replied faster than my seller (and still waiting for hes reply) 
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Offline amyk

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Re: WIFI Module Identification
« Reply #3 on: May 19, 2014, 12:45:17 pm »
The documents in that link are for a completely different module.

The MAC OUI is "Smart Energy Instruments" but that's probably not indicative.

The model number leads to "Beijing SimpleWifi" and this Chinese document that shows what's inside.

Also is it just me or does that external antenna look completely unconnected.
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Offline Ribster

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Re: WIFI Module Identification
« Reply #4 on: May 19, 2014, 02:49:25 pm »
Isn't that trace from the connector going into C37??
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Offline Scrts

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Re: WIFI Module Identification
« Reply #5 on: May 20, 2014, 02:24:12 pm »
Quote from: Ribster on May 19, 2014, 02:49:25 pm
Isn't that trace from the connector going into C37??

Yes, so you can solder it to use PCB antenna or leave it as-is for external antenna (use of external connector).
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