[GreenKeys] ESP8266 WiFi Module UART

[Eric]

On 12/27/2015 11:17 am, epvgk at limpoc.com wrote:
> On Sun, Dec 27, 2015 at 01:23:55PM -0500, Steve Garrison wrote:
>> Does that 3.3V go to the Vcc pin on the device?
>> 
>> The device itself is much cheaper that the eval board we've bought in 
>> the
>> past.
>> 
>> Have you ordered one or more of these and found them easy to use?  
>> What
>> about import duties?  Do the actually apply or can that statement on 
>> their
>> website be ignored?
>> 
>> Steve G./N4TTY
> 
> I ordered a number of those 99c CP2102 boards and the ones I received 
> did not
> work at 45.45 baud. The programming utility reported success 
> programming them,
> but the programmed settings were ignored.  Certainly all of these are
> counterfeit
> chips, and it probably depends on how thorough the forgery is for the 
> particular
> run of chips you get. They're so cheap it's probably worth buying a few 
> just
> to try your luck.
> 
> I actually considered lifting off the fake chip and soldering a real 
> CP2102 from
> digikey in place of it, because the board is nice and small and cheap,
> but I haven't
> tried it yet.
> 
> eric


BTW the seller I bought my (non-working) ones from was 
http://www.ebay.com.hk/usr/wide.hk in case you want to avoid them, but I 
wouldn't expect any actual correlation between the product and which 
ebay seller it comes from today.

eric

> 
>> 
>> -----Original Message-----
>> From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf 
>> Of John
>> Nagle
>> Sent: Saturday, December 26, 2015 2:26 PM
>> To: greenkeys at mailman.qth.net
>> Subject: Re: [GreenKeys] ESP8266 WiFi Module UART
>> 
>> The minimal device for 45 baud is this $0.99 USB to serial converter:
>> 
>>      
>> http://www.ebay.com/itm/like/121651178882?ul_noapp=true&chn=ps&lpid=82
>> 
>> You'll have to reprogram it to go 45 baud, using this:
>> 
>>      http://www.aetherltd.com/connectingusb.html
>> 
>> That gets you 45 baud at 3.3V; you still need level conversion.
>> 
>> 			John Nagle
>> 
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> ______________________________________________________________
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> 
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