2.4/5.8Ghz WL1283 module for $14.40

There is a WL1283 module listed in Aliexpress for $14.40.
http://www.aliexpress.com/product-gs/591391853-jorjin-Bluetooth-module-Wifi-module-WG7550-wholesalers.html

Documentation is here:
http://tech.groups.yahoo.com/group/olinuxino/files/

That is a lot cheaper than the WL1271/3 modules I’ve seen. Any hardware hacker up to making a PCB for it?

WL1283 has:

2..4/5.8Ghz wifi
Bluetooth 4.0
GPS
ANT
FM radio

Jon Smirl <jonsmirl@gmail.com> [2012-07-07 06:49:52]:

Documentation is here:
http://tech.groups.yahoo.com/group/olinuxino/files/

Hm, link without the need for a login would be better...

That is a lot cheaper than the WL1271/3 modules I've seen.

I wonder why there is Ralink RT3070 chipset on the photos...

-- ynezz

From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
On Behalf Of Petr Štetiar
Sent: Sunday, July 08, 2012 11:18 AM
To: beagleboard@googlegroups.com
Subject: Re: [beagleboard] 2.4/5.8Ghz WL1283 module for $14.40

Jon Smirl <jonsmirl@gmail.com> [2012-07-07 06:49:52]:

> Documentation is here:
> http://tech.groups.yahoo.com/group/olinuxino/files/

Hm, link without the need for a login would be better...

> That is a lot cheaper than the WL1271/3 modules I've seen.

I wonder why there is Ralink RT3070 chipset on the photos...

The WL1283 is a BGA part so this doesn't look like a WiLink7 module.

-- ynezz

-- To join: http://beagleboard.org/discuss To unsubscribe from this group,

send

The photos are wrong. They are supposed to be fixing them.

Just another chinese manufacturer… Order wl1283 and you’ll be lucky if they send you at least Ralink. For any complaint you will get a standard answer “oh sorry! Order more!”.

From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
On Behalf Of jonsmirl@gmail.com
Sent: Sunday, July 08, 2012 12:13 PM
To: beagleboard@googlegroups.com
Subject: Re: [beagleboard] 2.4/5.8Ghz WL1283 module for $14.40

The photos are wrong. They are supposed to be fixing them.

Hi Jon,

If this module does contain a WL1283, then this is a very good deal. Please share pictures of the updated module as I would be interested.

Regards,
John

From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
On Behalf Of jonsmirl@gmail.com
Sent: Sunday, July 08, 2012 12:13 PM
To: beagleboard@googlegroups.com
Subject: Re: [beagleboard] 2.4/5.8Ghz WL1283 module for $14.40

The photos are wrong. They are supposed to be fixing them.

Hi Jon,

If this module does contain a WL1283, then this is a very good deal. Please share pictures of the updated module as I would be interested.

We ordered a pack of five. It is in the mail.

Just another chinese manufacturer… Order wl1283 and you’ll be lucky if they send you at least Ralink. For any complaint you will get a standard answer “oh sorry! Order more!”.

While that kind of scam does happen, for all the orders placed online from China, via Alibaba or Aliexpress in past 3 years, I’ve never had a bad experience. Some delays, yes, not no bait-n-switch, no slugs, no DoA etc. Maybe I am just plain lucky in this regard, but I do try to pay attention, do due diligence in checking company background, search for any negative feedback, and years for which co. has been in business, and if they have got good credentials.

There is a WL1283 module listed in Aliexpress for $14.40.
http://www.aliexpress.com/product-gs/591391853-jorjin-Bluetooth-module-Wifi-module-WG7550-wholesalers.html

Documentation is here:
http://tech.groups.yahoo.com/group/olinuxino/files/

The modules came today. We received Jorjin WG7500 instead of WG7550
modules. TI WL1281 vs WL1283 - no 5.8Ghz. We are addressing the switch
with the vendor.

Are TI's antenna designs for the WL1281 available anywhere?
I'm also trying to determine if the modules have FCC modular approval
and with what antenna design.

From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
On Behalf Of jonsmirl@gmail.com
Sent: Tuesday, July 17, 2012 12:46 PM
To: beagleboard@googlegroups.com
Subject: Re: [beagleboard] 2.4/5.8Ghz WL1283 module for $14.40

> There is a WL1283 module listed in Aliexpress for $14.40.
> http://www.aliexpress.com/product-gs/591391853-jorjin-Bluetooth-module
> -Wifi-module-WG7550-wholesalers.html
>
> Documentation is here:
> http://tech.groups.yahoo.com/group/olinuxino/files/

The modules came today. We received Jorjin WG7500 instead of WG7550
modules. TI WL1281 vs WL1283 - no 5.8Ghz. We are addressing the switch

with

the vendor.

Are TI's antenna designs for the WL1281 available anywhere?

Hi Jon,

TI only provides WL12xx info under an NDA. I don't believe TI has a
reference design with an antenna, but even if they did, you would have to
copy the PCB layout and stackup including using the same PCB material to
ensure the antenna impedance matches the WL12xx. I would recommend that you
contact an Antenna design specialist. If you do want to do something
quickly, you can always use a 2.4GHz chip antenna which you can buy from
Digikey or Mouser. The chip antenna datasheet will give you a recommended
PCB layout including impedance matching network. Using a Smithchart, you can
calculate the approximate values of the components in the impedance matching
network. If you need to check the antenna, speak to someone from the RF
department of you local university as they may let you use one of their
impedance analyser. You could pay on of the grad students to help you get
this done.

Regards,
John

I'm also trying to determine if the modules have FCC modular approval and

with

what antenna design.

>
> That is a lot cheaper than the WL1271/3 modules I've seen. Any
> hardware hacker up to making a PCB for it?
>
> -- To join: http://beagleboard.org/discuss To unsubscribe from this
> group, send email to:
> beagleboard+unsubscribe@googlegroups.com
> Frequently asked questions: http://beagleboard.org/faq

--
Jon Smirl
jonsmirl@gmail.com

-- To join: http://beagleboard.org/discuss To unsubscribe from this group,

send

I compiled GDB and gdbserver 7.4.1, and install them to beaglebone.
I recompiled whole program using gcc -g option.
I’m sure my program has symbols in it coz it is 3 times bigger than the former one.

But when i setup remote debugging, and typing list command, gdb informs me: “No symbol table is loaded. Use the “file” command.”

Everything is going well under x86 gcc & gdb.
Anyone has a solution or a better debugging method?

Sincerely.

From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
On Behalf Of jonsmirl@gmail.com
Sent: Tuesday, July 17, 2012 12:46 PM
To: beagleboard@googlegroups.com
Subject: Re: [beagleboard] 2.4/5.8Ghz WL1283 module for $14.40

> There is a WL1283 module listed in Aliexpress for $14.40.
> http://www.aliexpress.com/product-gs/591391853-jorjin-Bluetooth-module
> -Wifi-module-WG7550-wholesalers.html
>
> Documentation is here:
> http://tech.groups.yahoo.com/group/olinuxino/files/

The modules came today. We received Jorjin WG7500 instead of WG7550
modules. TI WL1281 vs WL1283 - no 5.8Ghz. We are addressing the switch

with

the vendor.

Are TI's antenna designs for the WL1281 available anywhere?

Hi Jon,

TI only provides WL12xx info under an NDA. I don't believe TI has a
reference design with an antenna, but even if they did, you would have to
copy the PCB layout and stackup including using the same PCB material to
ensure the antenna impedance matches the WL12xx. I would recommend that you
contact an Antenna design specialist. If you do want to do something
quickly, you can always use a 2.4GHz chip antenna which you can buy from
Digikey or Mouser. The chip antenna datasheet will give you a recommended
PCB layout including impedance matching network. Using a Smithchart, you can
calculate the approximate values of the components in the impedance matching
network. If you need to check the antenna, speak to someone from the RF
department of you local university as they may let you use one of their
impedance analyser. You could pay on of the grad students to help you get
this done.

We can design all of the antennas but it is a lot of work, I was just
hoping to get a quick set of PCB files.
Here's a 2.4Ghz 802.15.4 board we have done.
http://www.lowpan.com/blog/blog5133

Modules like this usually have FCC modular approval. There would be a
set of antenna designs that go along with the modular approval.
I have emailed Jorjin but I haven't heard anything back.

Maybe someone from TI will read this and help us out.

Hi,

It can happen that a library doesn’t have debugging symbols. Once I had problems compiling gdbserver, because my toolchain didn’t have ‘libthread_db’. This is the libpthread with symbols, I think.

In that occasion, I was using a building tool which had good dependencies checks. How are you cross-compiling gdbserver??

Att,

Fernando Akira Endo

Phi Innovations

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Center Santa Genebra
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+55 19 3709-1358

2012/7/18 xiooozzz <xiooozzz@gmail.com>

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Texas Instruments, Inc
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