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Help wanted for top secret project

Posted by Jordi Muñoz on January 2, 2011 at 5:00pm

Happy new year folks!

DIYdrones hardware development team needs some help, if you think you can contribute in something please PM, our requirements are:

-Any microcontroller capable to handle a little web server can be used.

-The hardware must have WiFi access (behave as an access point).

-The hardware must have SD card slot (where you can store html files).

-Must be cheap (< $100).

The system must be capable to read a HTML file stored on the SD card (including pictures) and create a web server accessible via WiFi (acting as an access point). When the user is connected to the Wifi device-must type any direction like "http://192.168.1.100" and be able to load the HTML files stored on the SD. Something similar to a home router.

The HTML files must be able to read/write to the IO, analog and UART pins of the same microcontroller....

What we need from you are suggestions of the right hardware, software contributions and connections to anybody capable to help us.

Anyone? ;-)

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Comments

Developer

Michael Smith January 4, 2011 at 9:55pm

@Tim what documentation is available implies that there is support in the firmware for adhoc mode. Given that it's not routing, infrastructure mode would be overkill.
Tim Michals January 4, 2011 at 9:51pm

There is a lot of code for a soft AP, it must send out beacons, etc, Not saying it cannot do it, but would be nice to get verification. Also, how many nodes it can support, it must atleast do 2.
Developer

Michael Smith January 4, 2011 at 9:08pm

@Tim the firmware as shipped is client-only. The documentation for the SDK implies that you could write server code with it.
Developer

Michael Smith January 4, 2011 at 9:07pm

@earl you still need the toolchain, BSP and documentation. If you're lucky the $2500 might even include a few minutes of support.
Earl January 4, 2011 at 8:37pm

A +18dbm version is only $38.xx and the programmer is $149.

http://www.gridconnect.com/wiflygsxc.html

Add a small bidirectional amp for ~$50 and this could be a viable thing.

Not everyone needs the programmer. Once the program is developed, it can be uploaded by ttl 5v signals from what I read.

+18 dbm is over 50mw which is quite a bit of power.

Earl
Tim Michals January 4, 2011 at 8:18pm

Does this module support AP mode? Or just Client?
Developer

Michael Smith January 4, 2011 at 8:00pm

@medaidroid FPV systems frequently use directional receiving antennas that need to be aligned to the transmitter.
Developer

Michael Smith January 4, 2011 at 7:55pm

@bGatti not much like an Arduino, no. The G2 SoC uses a SPARC core, and the runtime (eCos) is a realtime operating system. That being said, what I can see of the documentation looks like fun...
Developer

Michael Smith January 4, 2011 at 7:47pm

@Lew nice, but $2500. Not so good for DIYing (but quite possibly fine for this application).
Lew Payne January 4, 2011 at 6:13pm

WiFly... "writing your own firmware" development kits available. Note that Mouser has then for less, and Roving Networks has a good page showing the available versions. Indeed, an excellent find by bGatti.