What power source are you using? Is it the same one you used with the other board?

That's exactly what I was thinking. Check your power source, make sure it's at least 6v and fully charged, better yet use a mains adapter to check it (I use an old 12v router power supply for bench testing).

Hi Peter have you gone through the hardware diagnostics again? and do you have a meter to check the power to the board? and on the pins as shown in the hardware diagnostic video it sounds like power or an unsoldered pin maybe. Give it a really good look over. A psu or fresh batteries may be needed another thing flashing blue led make take a couple of seconds to start up

Thanks for the quick responsed. I'm using 6 fresh aa batteries in the supplied holder, showing just over 9v with a meter.

Been through the diagnostic resistance and voltage as in the video both check out ok

There is no voltage to the Blue LED as far as I can tell.

I'll have a good look over the board tomorrow with fresh eyes

and a magnifier perhaps

Hi All, I finally got a short reprieve from DIY and am back on the case.

I've found an old router supply (thanks for the tip @rich), plugged it in and the blue LED is now working. I'll have a good look at the battery pack, it's showing 9v+ but there must be something wrong with it maybe the screw terminal isn't making a good connection, that can wait for another day.

Most concerning is that I'm still having the connection problem. Latest debug report from the firmware updater...

EZ-Robot OS Updater Version: 2013.06.22.01 24/06/2013 21:04:46 - Begin

Attempting connection on COM14 Comm Err: The operation has timed out. BbytesToExpect: 1

Received: Disconnected Connection Failed: System.Exception: Controller Not Responding at EZ_B.EZB.Connect(String hostname, String tcpPassword, Int32 baudRate) Disconnected 24/06/2013 21:04:52 - Connection attempt error

Available Ports:

• COM14
• COM15

So basically the same symptoms as my first board. No response from the EZ-B. Visually everything looks ok on the chip and the solder joints to the chip all look ok to my untrained eye. What am I doing wrong?

Incidentally the laptop is a Dell Inspiron 1110 11z, Windows 7, 64-bit. It's about a foot away from the EZ-B

I would bet on it being that it's a Dell. Is it the onboard Bluetooth by any chance? And with the Dell software?

From the looks of the debug message the PC isn't listening to the EZ-B. It could be the bluetooth dongle on the PC but it's more likely to be the drivers Dell package with their PCs. I'm always a little hesitant to advise it since it may cause issues elsewhere with other hardware/software (although rare) but uninstalling any Dell bluetooth software and drivers and reinstalling the device with the Microsoft bluetooth stack should hopefully solve the connection issue.

Before doing that, is it possible to check it on a different PC with a bluetooth dongle?

Thanks @Rich I was starting to get suspicious that it may be something like that. I tried uninstalling the bt hardware last time, everything looks windows-like as in the tutorial video.

Not sure if it help you to help me but in device manager under Bluetooth Radios I have... Dell wireless 365 Bluetooth module, Manufacturer: Broadcom, with Broadcom driver, Location Port_#0003.Hub_#0008 Microsoft Bluetooth Enumerator, Manufacturer: Microsoft, Location: on Dell Wireless 365 Bluetooth Module

Both report device working properly

I'll pop over to my Dads when I get a chance and check out with his pc and USB Bluetooth dongle. If it works I'll disable the onboard Bluetooth on my laptop and borrow his usb dongle to try.