CHEAP wifi modules, at last!

[ardhuru]

Thats good valuable information, Henrik. Thanks.

[ardhuru]

Henrik, I'm trying to connect the module to a terminal emulator. I have a true serial port on my PC (not a USB-to-serial).

I understand I'll have to use a level shifter. But, would I also need to invert the signals? Or just resistor(s) in the Tx/Rx lines?

[pedja089]

You need MAX3232.

[HenrikOlsson]

Hi,
You'd need to invert and level shift them.
I'd recommend using something like this. (Many many alternatives available of course but make sure it's designed to work at 3.3V).

I'd like to clarify that the dongle I used isn't a "USB to RS232" one but a "USB to UART", this one to be precise.

/Henrik.

EDIT: Oops, pedja089 posted while I was typing and getting distracted with other things....

[ardhuru]

Thanks, guys! Got the chap running. Extra thanks to Henrik for pointing out that Ch_PD I/O needs to be pulled high. I had missed that.

Serial comms with terminal work ok.

Can see the module on my Android.

COULD see the routers (mine, and ones in the vicinity) with the AT+CWLAP.

Could connect with my router after specifying SSID and the password.

BUT, after that, AT+CWLAP no more lists the routers around; module seems to hang with a "busy now' response to any query.

All other AT commands still work.

Wonder what is happenning? (Module is connected to my router, confirmed that using AT+CWJAP?)

Wonder how to erase my router from the module's eeprom? That might make the AT+CWLAP start listing the routers around again.

Perhaps time to enlist on the ESP82666 forum.

[ardhuru]

Okay, problem solved.

I had inadvertently given a wrong password for my router, and the module would keep on trying to log on continuously.

Used the AT+CWQAP, re-defined my SSID and password, and it works as it should.

[ardhuru]

Not trying to be pushy, but I wonder if you have had any success, Henrik?

I ran into a wall after getting the basic comms working (connecting to my router). Of course, the fact that I know nothing about TCP or HTML doesnt help, either.

Although, the module is now connected to the router (i can ping it remotely), I cant see it thru the browser.

[HenrikOlsson]

Hi,
No, I haven't worked on it, don't know what to do with them.... :-)
Simply getting them connected to your Wifi doesn't mean you can "browse to them" - there's a little more to it than that (but not much really). Unfortunatley I don't remember off the top of my head and I don't have access to my notes right now.

What exactly is it you want to do?

I'll see if I can get something simple cobbled together tonight perhaps.

[ardhuru]

Well, for starters, I would like to connect a pic to the 8266's UART outputting some data, and expect it to be seen in the browser. And then, perhaps, feed in data into the browser, to be read by the pic?