Which WiFi board for a AVR project.

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For a small AVR project I need a WiFi board the can be a small server so I can start a motor etc. from my cellphone.
What board is the best? (the AVR will be TTL rs232 or SPI)
1. easy to get up running.
2. cheap.

and low:
power use
distance

Jens

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Wr703 wireless router. If you have a usb->serial converter, it will plug straight in. Plenty of stuff using this and the arduino on the web.

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but I don't see it having a rs232 or SPI for my board!?

What I need is a wireless router (PCB) there can be a simple server, and my AVR can give it data via RS232 or SPI, and my cell hook up to.

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Quote:
but I don't see it having a rs232 or SPI for my board!?

What I need is a wireless router (PCB) there can be a simple server, and my AVR can give it data via RS232 or SPI, and my cell hook up to.


Err - a $4 usb->serial dongle gives you serial connection. If you have an arduino board, it plugs straight in. I paid $15usd for my wr703. It's hard to beat that price. The arduino Yun is effectively the same thing.

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when I look at the wr703 it looks like it has to be bricked to work with RS232, then it don't work I need to produce these (but only small numbers).

I try to make it clear
I have a 8 bit AVR that send/receives data on the uart, into a wifi pcb of some kind.(which I need to find out)
That wifi board has to be able to be programmed with a web page so it can receive and transmit data from a cellphone (from a browser not an app.) so data can be send /received , to the AVR

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Wiznet have some wi-fi modules suitable for use with small MCUs:

http://www.wiznet.co.kr/sub_modules/en/product/Product_Line.asp?cate1=5&...

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Quote:
when I look at the wr703 it looks like it has to be bricked to work with RS232, then it don't work I need to produce these (but only small numbers).

I think we have some language problems here. 'Bricking' means to render it inoperative or to 'kill' it. I think you mean 'hack' it which means to modify it. There is nothing immoral or illegal about it. There is also the Carambola board which is basically the same thing. There are also other tplink models with batteries that can also power your device via USB. Note that the wr703 runs linux, so you can run scripting languages and many other things without having to write a line of code.

You load open source firmware onto the wr703 (openwrt). This has a webserver built in.
No need for RS232 - just use an arduino or usb->serial.
Google wr703 arduino

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clawson wrote:
Wiznet have some wi-fi modules suitable for use with small MCUs:

http://www.wiznet.co.kr/sub_modu...

+1

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Quote:
Wiznet have some wi-fi modules suitable for use with small MCUs

And if you want a wired thing, there are those too e.g. Lantronics XPort. I'm sure there are other manufacturers as well.

As of January 15, 2018, Site fix-up work has begun! Now do your part and report any bugs or deficiencies here

No guarantees, but if we don't report problems they won't get much of  a chance to be fixed! Details/discussions at link given just above.

 

"Some questions have no answers."[C Baird] "There comes a point where the spoon-feeding has to stop and the independent thinking has to start." [C Lawson] "There are always ways to disagree, without being disagreeable."[E Weddington] "Words represent concepts. Use the wrong words, communicate the wrong concept." [J Morin] "Persistence only goes so far if you set yourself up for failure." [Kartman]

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Difficult to beat dropping an AVR into a WiFi router.
My attempt:
iMX233-OLinuXino-NANO, 22EUR
iMX233-OLinuXino-SD, 10EUR
MOD-WIFI-R5370, 6EUR
A 5V wall wart from "the bucket".
Open source hardware and software.
[url]https://www.olimex.com/Products/OLinuXino/iMX233/iMX233-OLinuXino-NANO/o...
[url]https://www.olimex.com/Products/USB-Modules/MOD-WIFI-R5370/[/url]

Lantronix XPort -
Recent arrival at a local distributor is a pico server; uses a 16-bit x86.
[url]http://www.mouser.com/new/lantronix/lantronix-xPico/[/url]
Unfortunately it does not have a USB host port such that an inexpensive USB WiFi dongle could be added.

"Dare to be naïve." - Buckminster Fuller

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sparrow2 wrote:
For a small AVR project I need a WiFi board the can be a small server so I can start a motor etc. from my cellphone.
What board is the best?
Not certain; this is off the top of my head.
Gainspan WiFi module, IIRC it's two ARM7, HTTP server, might run off a lithium primary cylindrical cell for a while.
36USD (quantity 1) at Digi-Key.
http://www.gainspan.com/gs1011mips

"Dare to be naïve." - Buckminster Fuller

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Quote:

e.g. Lantronics XPort.

If you are looking at wired I've never really understood the appeal of $50 Lantronix over $18 WIZ812MJ?

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Industrial temperature range and a five year warranty?
[url=http://www.lantronix.com/device-networking/embedded-device-servers/xpico...® Wi-Fi®[/url] looks interesting; a Cortex-M3.
30USD at one US distributor.
[url]http://dk.rs-online.com/web/p/wlan-moduler/7976686/?searchTerm=7976686[/...

"Dare to be naïve." - Buckminster Fuller

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Quote:

If you are looking at wired I've never really understood the appeal of $50 Lantronix over $18 WIZ812MJ?

Of-course. Couldn't swap the name of'em in from the tape reel I have at the back of my head.. :wink:

But just for the sake of an argument :wink:

- Size (the complete XPort is somewhat larget than the jack housing of the WizNet module).
- XPort can run completely standalone (it contains, if you wish to use it, it's own web server. 512K flash etc. Remotely upgradeable "out of the box".)
- Perhaps more..

But, if all you want is an easy way to cabled TCP/IP connectivity for your AVR then WizNet is cheaper.

As of January 15, 2018, Site fix-up work has begun! Now do your part and report any bugs or deficiencies here

No guarantees, but if we don't report problems they won't get much of  a chance to be fixed! Details/discussions at link given just above.

 

"Some questions have no answers."[C Baird] "There comes a point where the spoon-feeding has to stop and the independent thinking has to start." [C Lawson] "There are always ways to disagree, without being disagreeable."[E Weddington] "Words represent concepts. Use the wrong words, communicate the wrong concept." [J Morin] "Persistence only goes so far if you set yourself up for failure." [Kartman]

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davef wrote:
Maybe, https://pinocc.io/
I don't think so, Dave.

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ok thanks for the info.
I need wifi

I have used Lantronix xport and they seems to work fine, but forget about the support it's a wast of time. (they just come back with standard questions. I would expect that they know how to use a TCP/IP connection in putty but no).