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Topic: Original Wifi Shield not working (Read 682 times) previous topic - next topic

jakimarks

Hello everybody,

today the Arduino Wifi Shield arrived and i wanted to connect my arduino Mega 2560 with my home network. I put the shield on the arduino mega and connected the arduino mega via usb with my laptop. I tried ConnectWithWPA and ScanNetworks from skretch example but the error is "WiFi shield not present".

No led on the shield lights up. I don't now what the problem is, but maybe you can help me?

Thanks!

James C4S

Is it mating correctly with the ICSP header on the Mega2560?
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

jakimarks

Yes, it is. Maybe i accidently touched the reset button. I read that the reset button on the shield does not only reset the userprograms but deletes the wifi firmware as well. Could this be the problem? I will try to reinstall this firmware and will report then.

James C4S


I read that the reset button on the shield does not only reset the userprograms but deletes the wifi firmware as well.

Where did you read that?  Not everything you read on the Internet is true.  (for example, that comment.)

The hardware page has a comment from someone suggesting jumpering pins 7 and 3.
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

jakimarks

I read it on the official arduino site:

http://arduino.cc/en/Main/ArduinoWiFiShield

"The reset button on the shield resets both the HDG104 and the Arduino board."

James C4S


"The reset button on the shield resets both the HDG104 and the Arduino board."

Where is the "but deletes the wifi firmware as well" part?

RESET means "reset the machine."  Not "deletes firmware."
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

jakimarks

Hmm.. I thought that resetting the HDG104 means deleting the firmware. But now i know thats wrong. Thanks! Aaaaand you were right: Connecting pins 7 and 3 is the solution. Do you know why? I really want to know why.

Thank you :)

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