WiFly how its work? - SparkFun Electronics Forum

WiFly how its work?#123424

By Alex_Qt - Tue Mar 22, 2011 6:06 am

- Tue Mar 22, 2011 6:06 am #123424

Hi everyone, I'm buy new WiFly module http://www.sparkfun.com/products/10004
Now I'm connected:
1) pin 12 and pin 13 --> Rx,Tx UART (3.3 TTL level).
2) pin 19 and pin 18 to ground and 36-44 to ground too.
3) pin 20 and pin 21 to +3.3V DC power
4) pin 26, 27, 28, 29 --> LED indicator
5) pin 24 it's jamper, and connected to +3.3V DC power (for adhoc mode)

But my WiFly module doesn't work right, I can't find new network access point from my laptop, computer or Nokia 5800, and any LED's don't flash or ligth ON

Then I'm connect my module to computer (UART-USB) (FT232RL), and open TeraTerm terminal and connect him to virtual com port COM10, I see cycle responde from WiFly module:
WiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFlyWiFly...................
What is my problem? Please help me.
Alex

Re: WiFly how its work?#123464

By Alex_Qt - Tue Mar 22, 2011 11:54 am

- Tue Mar 22, 2011 11:54 am #123464

Help me.

Re: WiFly how its work?#123465

By stevech - Tue Mar 22, 2011 12:09 pm

- Tue Mar 22, 2011 12:09 pm #123465

Alex_Qt wrote:Help me.

Re: WiFly how its work?#123474

By FartingMonkey92 - Tue Mar 22, 2011 12:48 pm

- Tue Mar 22, 2011 12:48 pm #123474

Oh my. You decided to leave a little work for us then...

Okay:
1. Looks like your powering the WiFly module from 5V. Not good.
2. The FTDI FT232RL IC can only supply 50ma on it's regulated 3.3v output. The WiFly module needs up to 212ma when transmitting, insufficient current may cause it to reset.

Answer those and we may be able to continue.

Re: WiFly how its work?#123487

By Alex_Qt - Tue Mar 22, 2011 1:58 pm

- Tue Mar 22, 2011 1:58 pm #123487

I'm use 3.3V DC from USB 5V (see on picture)

Uploaded with ImageShack.us

Last edited by Alex_Qt on Tue Mar 22, 2011 2:00 pm, edited 1 time in total.

Re: WiFly how its work?#123488

By FartingMonkey92 - Tue Mar 22, 2011 2:00 pm

- Tue Mar 22, 2011 2:00 pm #123488

Image doesn't work but hey-ho, how about putting some decoupling capacitors on that regulator you have there...

Re: WiFly how its work?#123501

By Alex_Qt - Tue Mar 22, 2011 3:05 pm

- Tue Mar 22, 2011 3:05 pm #123501

АААААААААААААААА!!! Module is working!!

The case was in feeble regulator 3,3 V, which is seen only 100 mA current, and the WiFly module need to 240 mA from it and continuously reset in the hope that it will be enough power! When I powered from power suppla. Immediately LED's blinked, signaling that the WiFly module works.