peter_d77
Hi Everyone,
After accidentally finding this site while looking at Roomba reviews on YouTube I decided that I really needed to build a robot. My wife just got the complete kit for me as a birthday present so my children are awaiting the immanent arrival of a robot in our house. The trouble is I cannot get the EZ-B to connect to ARC or do a firmware update. I've trawled the forum and seen similar issues but never an actual fix for the problem, hopefully I've covered all the obvious stuff in my post (sorry it's so long).
So far the steps I've taken are...
I've paired the EZ-B with my laptop (running windows 7). It shows up under Bluetooth devices as linvor. COM6 and COM7 were shown as the ports when it connected
At this point on the EZ-B I have a flashing red light (Bluetooth module) and a solid blue light.
In control panel \ device manager under Bluetooth radio it shows Microsoft Bluetooth Enumerator, Driver provider for this is Microsoft. and Dell Wireless 365 Bluetooth Module, Driver provider Broadcom So I think I'm using the right Bluetooth stack everything looks like DJs tutorial video when I paired the EZ-B, can someone confirm?
Next I opened ARC selected COM6 in the drop-down for connection 0. Pressed Connect. Red light stops flashing briefly and I got this message...
Attempting connection on COM6 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
I went back and read/watched the online support/tutorial. I tried firmware update (I think I need this since device name is linvor and I have a flashing blue not 'pulsating' when it's not connected to bluetooth), got similar message.
At his point I went back to online support again and tried the 'hardware diagnostic', the board passed resistance and voltage tests.
So at this point I think I've exhausted all the resources currently on the website. Any help you can give me to get this up and running would be greatly appreciated. Looks like it'll be a great bit of kit if I can ever get connected!
Peter
did you pair it right? enter the pairing code 1234?
How many times did you try to connect with ARC and the firmware updater? It can be a little hit and miss on occasion and take a few tries.
@Technopro, you can't pair it incorrectly, it either is paired or it isn't.
@peter_d77 If you still can't get it to after trying what @Rich mentioned you can also try re-seating the bluetooth module on the EZ-B, carefully pop it out of it's socket and pop it back in. It could be just an intermittent connection at the 4-pin female bluetooth header.
I know the rule is to normally use the lowest com port but have you tried using com 7 ? Also have you tried establishing a connection using another terminal program like Hyperterm or Realterm ?
Thanks for all the quick responses...
@Rich I couldn't give the exact number of tries but it's a lot, I tried several times over two days.
@Robot-Doc I had COM6 and COM7 available, I tried both. These were the only two ports available in the drop down since I've removed all other Bluetooth devices in case there was any conflict. I've never used Hyperterm or Realterm, how would I go about this?
@skater_j10 I've checked the resistance of the pins on the Bluetooth modules, they are behaving as described in the hardware diagnostic section on this website
Peter, i'm sorry to hear about your issue. Before we consider the unit faulty, can you please examine the back of the circuit board? Look for a connection that has not been soldered. On occasion, this has happened... Usually it's one of the pins on the IC (usually at each edge).
Can you verify that the Blue LED is flashing?
If all looks fine and the blue LED is flashing... Then we will have to replace your EZ-B. There have been a few occasions where the IC was statically damaged during shipping. It has happened nearly 5 times in the past year - however, this is an acceptable tolerance from thousands of shipments. I wish there was something more we can do, but it creeps up on us from time to time.
I can tell from the description that the Bluetooth connects and disconnects without communicating to the IC. Also, you mention the EZ-B is still being recognized as LINVOR and not EZ-Robot. On first connection, it will be recognized as Linvor. Following all other pairing, it will be recognized as EZ-Robot.
Contact Us to have your EZ-B returned to our location and we'll send you a replacement - if the blue led is not flashing, and all traces appear to be soldered.
Hi @DJ Sures, thanks for response.
I've just visually checked the board all connections appear to be soldered and look good to my untrained eye.
The blue LED starts flashing fast when I power up the EZ-B then it stops flashing (I think once it connects to the laptop?). What does that mean?
peter_d77 - "I've never used Hyperterm or Realterm, how would I go about this?"
Those two programs can be downloaded from the web. Just do an internet search for them. I use either one since they both work the same, they just have different screens depending on what you like. They can be used to perform basic troubleshooting in the case of EZ-B and bluetooth. You just specify which com port you want to connect to (in your case 6) and then see if the connection is established.
You will not have to do this test though since DJ mentioned that he suspects your board has a damaged IC due to ESD.