try charging the battery https://synthiam.com/Tutorials/Lesson/26?courseId=4

Thank you bborastero but it is not a battery issue. I did charged it and I got the same result. Then I used a power supply, same thing. I measured voltages and it is 7.4V on the digital side and 3.3V on the analog, as is supposed to be. After disabling the antivirus, the laptop connects to the EZB (at least that is what it says the network manager) but then when I try to connect to the ARC I get this result:

EZB 0: EZB 1: EZB 2: EZB 3: EZB 4: Attempting connection on 192.168.1.1:23 Comm Err: System.Net.Sockets.SocketException (0x80004005): Se produjo un error durante el intento de conexión ya que la parte conectada no respondió adecuadamente tras un periodo de tiempo, o bien se produjo un error en la conexión establecida ya que el host conectado no ha podido responder en System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) en EZ_B.EZB.vVF0PNgmTy(Int32 , Byte[] cmdData) BbytesToExpect: 1 U Received: 0 Disconnected Connection Failed: System.Exception: Controller Not Responding en EZ_B.EZB.xFJ0X7PTyn() en EZ_B.EZB.Connect(String hostname, Int32 baudRate) Disconnected

Basically, what I understand from this, is that ARC is not receiving the byte of info is supposed to receive to achieve the connection.

I pushed the reset button. Nothing.

What is really strange is that the EZB does not make any kind of sounds. Also, when resetting no red led light. Can this be solved reloading the firmaware of the EZB ? If so, how is done without connection ? Thank you

In regards to your lack of sound look at this thread.... especially post #4 No sound from the ezb

The WiFi chip runs independently of the EZ-B processor. It looks like they are not talking to each other.

You can try (carefully) taking the EZ-B out of its case and making sure the two boards are tightly squeezed together, but if that doesn't work, your board is probably bad. Have you had it less than 3 months? If it failed without being abused, you may be entitled to a warranty replacement. Use the Contact Us link and reference this thread.

Alan

Thanks for the answers.

I opened the case and checked for any loose contacts (springs of speaker, pressure on shield, etc.). All of them are ok and the problem is still there.

Does the Bluetooth depends on the Wifi chip too ? I scanned with an iphone and 2 laptops and they don't see any BT signal from EZB.

Is there something I can do to rule out any software problem before assuming the wifi chip is bad ?

I had the EZB SDK for over a year now but only recently (couple of months) I have been able to experiment with it. If it indeed is a hardware problem that would be a real disappointment

Thank you

Quote:

I scanned with an iphone and 2 laptops and they don't see any BT signal from EZB

Thank you richard. Yes I see that now. I was confused by some tutorials that were referring to a previous version of the EZB.

Can I install a BT module in EZb4 in order to connect to ARC via BT instead of WiFi ?

Quote:

Can I install a BT module in EZb4 in order to connect to ARC via BT instead of WiFi ?

No..... and even if you could BT would be woefully too slow....