[GreenKeys] ESP8266 WiFi Module UART

[COURYHOUSE at aol.com]

How much is the  card  with the good  chip already on  it!?
Ed#
 
 
In a message dated 1/3/2016 1:01:13 P.M. US Mountain Standard Time,  
epvgk at limpoc.com writes:

On Sun,  Jan 03, 2016 at 09:00:58AM -0500, Steve Garrison wrote:
> Eric, do you  have the Digikey part number handy?  What was the price at 
the time you  ordered?
> 
> Thanks!  May try a little microsurgery  myself.
> 
> Steve G./N4TTY

The DigiKey item is  

https://www.digikey.com/product-detail/en/CP2102-GMR/336-1160-1-ND/3672615

They're  $2.75 each, not that awful. 

The ebay module post-replacement looks  like this: 
http://wtrc.net/~eric/cp2102.jpg

I used hot air to take off  the old chip, cleaned off the glue with 
acetone, neatened
up the pads a bit  with an iron, and didn't add any new solder or paste, 
just what
was already  there from before. I preheated the board with hot air and then 
laid the  
new chip down, holding it in place under the air until the solder melted  
and surface 
tension settled it into position. 

eric


>  
> > On Jan 2, 2016, at 22:44, epvgk at limpoc.com wrote:
> >  
> > Regarding the cheapo 99c "CP2102" USB to serial modules we were  
talking about
> > last week: 
> > 
> > I ordered a  few real CP2102 chips and did some microsurgery to remove 
the fake
>  > chips that come with the modules and install real ones from  Digikey.  
They are a 
> > leadless and fine-pitch chip package,  but the swap was not horrible, 
and it 
> > does work as expected  afterward including using the SiLabs programming 
utility 
> > to set  600 and 1800 bps to 45 and 75 baud (which are all the 
teletype-compatible  
> > speeds I tried). 
> > 
> > Another amusing  thing I noticed was that the real CP2102 chips show 
their serial
> >  number as "001" and the fake ones are "31337001" 
> > 
> >  anyway, it's possible and not that painful. 
> > 
> > eric.  
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