[NTLK] Designing an Internal WiFi Board for MP2x00

Jake Bordens jake at allaboutjake.com
Mon Feb 2 17:43:44 EST 2015

The module takes AT commands, so there's an AT command to set the WiFi 
network and password. For example:

	AT+iWPP0=<WPA2 passphrase>

The module can store up to 10 networks, and has other useful modes and 
commands.  This can be done in a connection script in NIE's internet 
setup, or once using something like PT100.  Once the PPP connection is 
established, the module opens a port that you can telnet into and issue 
additional AT commands as well.

One important bit of one-time config, which is not well documented in the 
ConnectOne documentation is that you need to tell the module which network 
is the WAN:


In the NIE Serial Connection Script, your last command is:


And the module starts the PPP server.


On 2/2/15, 10:36 PM, "Tony Morrow" <gizmo1482 at gmail.com> wrote:

>Really cool project. I hope the printed boards work for you. I'm curious,
>how do you tell the WiFi module what wireless network to connect to when
>powered on?
>-Tony Morrow
>On Feb 2, 2015 5:13 PM, "Jake Bordens" <jake at allaboutjake.com> wrote:
>> So I've been slowly working towards a PCB design for an internal wifi
>> board.  Again, the WiReach wifi module has a PPP server on board so that
>> Newton Internet Enabler can "dial up" to a wifi modern wifi network with
>> modern encryption settings.  Max speed seems to be 119200 baud.
>> I am not a hardware engineer (but I know just enough to be dangerous) 
>>so I
>> posted my current thoughts at the following URL:
>> pcb.html
>> If there are any EE's in on the list that would care to set me straight
>> and tell me how horrible this is, it would be appreciated.  In all, the
>> board is pretty simple, a 3.3v regulator to power the module off the
>> battery leads, the module itself, some decoupling, and some connections 
>> the Serial3.  Not really complicated.
>> Also if anyone has any "real" measurements for the PCB mount points and
>> connector placement, I'd be interested.  My current design is 6 
>> of trial and error.
>> The next challenge will be finding a good antenna solution.  I have a
>> bunch of antennas on order and I intend to try out some ideas.
>> Thanks for any input.
>> Jake
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