I have been having issues with some of my equipment in the HMMWV, namely the mesh node, switch, DVR, etc.  THe radios are no problem, because they were designed for a mobile application, and their power supplies take that into account.

However, the WRT54G and other network electronics, although powered by 12v, are not expecting the voltage swings present in an automotive environment, ie. huge voltage drop during starting, and voltage peak up to 14v when driving, various other small drops during normal use.

After searching for a solution, and not wanting to spend $300 to filter my power, I found THIS.

It's a 12vdc voltage regulator that should fit the bill perfectly.  and only $65.  I will probably install it tomorrow, as it came this afternoon.   Hopefully it will fix my issues.

73

Lee

W5LMM

Thanks for the quick reply.  That was in fact the problem.  The router is working great now.

73,

AC7BR

Hello,

I have a WRT54G v1 router.  For some reason, it cannot find the wireless interface wl0.  In the GUI, I see the following error:

ifconfig: wl0: error fetching interface information: Device not found ifconfig: wl0: error fetching interface information: Device not found wl0 No such device 

From a console, I see the following if I restart the network:

root@AC7BR-1:~# /etc/init.d/network restart

udhcpc (v1.4.2) started

Sending discover..

ifconfig: SIOCGIFFLAGS: No such device

ifconfig: SIOCSIFADDR: No such device

No Broadcom wl interface found!

No Broadcom wl interface found!

ifconfig: SIOCGIFFLAGS: No such device

ifconfig: SIOCSIFADDR: No such device

Sending discover...

No Broadcom wl interface found!

wl0(broadcom): enable failed

The wireless settings in /etc/config/network are:

#### WIFI configuration

ifname   "wl0"config interface wifi

option ifname "wl0"

option proto static

option ipaddr 10.250.120.255

option netmask 255.0.0.0

I am using firmware version 0.4.3.

Any thoughts on why the wireless interface will not start?

Thanks,

Brad

AC7BR

Attached is a drawing of the node stand with all the parts identified.  You'll also find a few photos. 

I built this originally as a portability proof-of-concept for the San Diego HSMM-MESH Working Group initiative.  I've transported and deployed it 7-8 times at various ARC meetings around San Diego county drumming up interest in the project.  I wouldn't change it much.

If you decide to build one, I do have some other pointers:

• About half a bag of Quickrete should be enough.  You can always add more if you find stability issues with wind and the amount of equipment you mount on the mast.  Adding too much concrete just makes it harder to transport.
• The mast length should be limiited to what you can transport.  You can add a connector (1" galvanized female-female union) mid-way so it'll break-down to a small package.
• Most antenna mounting hardware assumes 2" masts.  I have found that these mounts work good enough on 1" pipe and 2" pipe is overkill for these devices... only adding weight and inconvenience to deployment. 

73,

Andre, K6AH

Attachments
 Drawing-Parts List.jpg [38 KB] ::
 Mast in Bucket.jpg [18 KB] ::
 Front View.jpg [42 KB] ::
 Side View.jpg [41 KB] ::
 Equipment Mounting.jpg [42 KB] ::
 Solar Panel Mount.jpg [21 KB] ::

Any chance of changing my username on the forum without having to just re-sign up?  Just had my new call sign granted.

WM3V

Formerly KE7YKP

Good evening,

My name is Paul, K6GPZ, and I reside in Temple City. I know...not exactly the "High Desert", but this is the only group close enough for now.

Either way, I have a few routers and switches all uploaded with the MESH firmware. I've tested the system quite a bit, and was even successful on running two phones (VOIP) via 3CX, using my computer as the PBX server. System works flawlessly!

Well, just wanted to say HI!!

73

Paul K6GPZ

Subject line pretty well sums it up folks. Came in from work this afternoon, and one node sitting here power light keeps flashing cannot and I connect to the gui. It almost seems now, like it is trying to boot over and over... Anyone seen this?

NR1X, Al, CT