
nicolson
Hi everyone,
I got my ez-b 2 weeks ago. I was able to successfully connect it to my computer, although it would sometimes take several attempt to have a successfull connection. But since this morning it stops connecting. Both status and bluetooth LED are flashing but it won't connect. I tried everything: I made sure the power supply is ok, I reinstalled EZ-Builder, successfully Paired the EZ-B with my computer, but it's still not connecting. Could someone help please?
Nick
If the L4931 is hot then it is shorted somewhere to ground as Skater_j10 suggests. The only time my board behaves in a weird way is if the power supply is low and it needs a recharge. The motors still work but the EZ-B just loses contact.
Hope this helps
I start to wonder if I should not order another EZ-B *stress*
I have got ARC 2011.08.10.00 and firmware version 12. Which is the latest version's on DJ's EZB site. I have no idea how you have got V14 firmware!! unless you are a beta tester?
All the files are in C: windows program files (x86)EZ-Robot It would be easy enough to send you the folder and you can run it from there ok
However as a test I just uninstalled ARC and reloaded it from the ARC page on this website and it is exactly the same as before and all works with V12 firmware
Confused?
However I have just tried reinstalling ARC without 1st uninstalling it from control panel and you get the repair uninstall option. Clicking on repair seems to screw up the Bluetooth comm ports so I'm now trying a machine reboot
Since it has been impossible to connect the EZ-B to my laptop using the bluetooth connection, I connected it using a serial to USB cable and found out that the firmware version is V85 when it should be V12. Does any one know what may be the reason? I include this video to show you guys.
DJ even has a small tutorial on updating your EZ-B firmware.
P.S. I hope that you are using a USB-TTL serial adapter, as normal serial communication from a COM port is 7-12V and will most likely damage the PIC chip, where as TTL level serial is usually in the 5V range which is ok for the PIC chip (even voltage levels at 3V should still be OK).
Any suggestion?
It could be 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, and
1382400
I stumbled across what looks like the bluetooth module used on the EZ-B
clicky
Suggest you try 9600 and then go up in stages and see if you get more sensible results you. The original settings look to be 115200, N, 8, 1 from this data sheet
If this doesn't work I suggest you need a new EZ-B board
It has been a frustrating week, many of my friends are desapointed, some are talking about $100 dollars scam! But me personally I don't think the EZ-B is a scam: to many of you guys in this forum seem to be happy with it and too much had been put in both the board and the software. The EZ-B is a master piece, it's the best way to build real robots.
Thank you all for your support.
Nick
4528 Stanley Road SW
Calgary, Alberta
T2S 2P9
Canada