Can't Connect to DLP LightCrafter via usb any more

Hi Zhenyue,

Can you clarify a few aspects of your issue?

1. How were you connecting/controlling the LightCrafter when it worked?
   1. Were you using the GUI previously and now it's not working?
   2. If you are using the GUI, what version is it?
2. Is there anything different about your current setup and your previous working setup?
   1. Are you using the same machine to connect?
   2. Did anything happen to the hardware? Did you make any modifications?
   3. How much time has passed since your device worked properly?

I'll suggest downloading the latest version of the firmware and software bundle, found at the LightCrafter landing page. The latest version is 3.0.

You may also want to take a look at section 2.2.4 Fixing the USB Start-Up Delay in Windows in the LightCrafter EVM User's Guide. Additionally, you can attempt to reinstall the drivers, described in section Installing the 2.2.2 RNDIS Driver on Windows 7 (Or 2.2.1 for Windows XP).

Thanks,

Clinton

Hi Clinton,

Thanks for your prompt attention.  My answers are as follows,

1. How were you connecting/controlling the LightCrafter when it worked?
   1. Were you using the GUI previously and now it's not working?    
   
   
   When I first got the LightCrafter, it's about two months ago. At the very beginning, it didn't work normally. When connected by the GUI, there were reminding that some firmware needs to be updated. So I update the firmware according to the instructions (
   http://e2e.ti.com/support/dlp__mems_micro-electro-mechanical_systems/f/850/p/176873/1174087.aspx#1174087
   ). Finally, everything was alright.  Just now I tried the desktop (Win 7 64bit) which I used to update the firmware. It can connect the LightCrafter. However, I cannot connect it with some other computers (Win 7 64bit and Windows XP).
   
   
   
   
   1. If you are using the GUI, what version is it?                                                                                                                                                                                                                                                                                                          The version is DLP LightCrafter FW & SW v5.0.
2. Is there anything different about your current setup and your previous working setup?
   1. Are you using the same machine to connect?
      1. No. I changed the computer. The previous one works normally.
   2. Did anything happen to the hardware? Did you make any modifications?
      1. No. I don't think so.
   3. How much time has passed since your device worked properly?
   1. About two months. I just figured it out that the previous computer which I used to update the firmware can connect and control the LightCrafer using the GUI. So it should be some problem with the software.

Best regards,

Zhenyue Chen

For the Win 7 64bit OS, I get this,

Hi Zhenyue,

Thanks for the feedback. Here are some suggestions for you.

1. Follow the steps in the section 2.2.4 Fixing the USB Start-Up Delay in Windows in the LightCrafter EVM User's Guide  as I mentioned previously.
   1. Additionally, when setting the IPv4 information, update the Default gateway to the IP address of the LightCrafter (192.168.1.100 by default, unless it has been changed)
2. Try pinging the LightCrafter
   1. Open a command prompt (cmd.exe) and type this command: ping 192.168.1.100 
      1. The default IP address of the LightCrafter
   2. See if you get reply back from the device

Let us know the outcome of those steps.

Thanks,

Clinton

Hi Clinton,

I took your suggestion. Unfortunately, it doesn't work. Check the attached image below. For the step to change the ip address for the LightCrafter, it shows the warning "No connection". It still cannot be connected. The result for ping 192.168.1.100 is request time out.

Regards,

Zhenyue Chen

Hi Clinton,

However I set the ip address for the USB Ethernet/RNDIS gadget, the information for it is always shown as follows:

Ethernet adapter Local Area Connection 3:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : USB Ethernet/RNDIS Gadget
Physical Address. . . . . . . . . : 26-75-F4-80-2A-46
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::c0bc:e65b:6ca0:c841%22(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.200.65(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 667030408
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-22-DB-AB-3C-97-0E-96-52-90

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

How can I solve the problem? 

Regards,

Zhenyue Chen

Hi Zhenyue,

It looks like your last post was info from your Windows 7 machine and the post before that was from your Windows XP machine. Both show different IP addresses for the LightCrafter.

It looks like for your Windows 7 machine, you put your wireless router's IPv4 information for the LightCrafter properties. In the cmd prompt, you need to find the Ethernet adapter with the 'RNDIS/Ethernet Gadget #' description.

For your WIndows 7 machine, you did not provide as much information in your screen shot, so I'm not completely sure what you have done in the IPv4 settings of the LightCrafter. You did capture the correct Ethernet adapter settings. Make sure the IPv4 Address and Subnet Mask match these values. I would initially leave the Default gateway empty and test that configuration.

Thanks,

Clinton

Hi Clinton,

I tried another Win 7 64bit computer. This time the ip address for the DLP LightCrafter and "RNDIS/Ethernet Gadget #" is in the same domain. Everything looks alright. However, the LightCrafter still cannot be connected. What's the problem?

Regards,

Zhenyue Chen

Hi Clinton,

I tried some desktops. Surprisingly, It works for all of them. So the problem is the DLP LightCrafter cannot work on laptops.

Regards,

Zhenyue Chen

Hi Zhenyue,

I'm glad you were able to connect to your LightCrafter and confirm it works. The LightCrafters can work on laptops. I actually use a Windows 7 64-bit laptop most often with the LightCrafter.

I would suggest closely following the steps to update the IPv4 address and subnet mask, as described in the LightCrafter's user's guide. You have not posted a screen shot where I've seen settings that match the directions in the user's guide.

Thanks,

Clinton

Hi  Curtis,

You're a genius. I disabled the WIFI connectivity. It works now. Awesome.

Best regards,

Zhenyue Chen

Hi Clinton,

I just disable the WIFI connection. Then the LC works normally. I am afraid the user's guide cannot solve the problem. Thanks for all your efforts. 

Best regards,

Zhenyue Chen

Hi Curtis,

Thanks for the input.

Hi Zhenyue,

I'm glad you are able to consistently connect to your LightCrafter. I suspect if you move the LightCrafter's IP address outside of your wireless network range you would be able to use the LightCrafter and your wireless internet connection at the same time.

Thanks,

Clinton