It is very handy to have a temprobe attached to network devices like a Wlan router, if OpenWRT is installed it is easy to use 1-wire devices. By using this method it is possible to create wireless temperature probes that uses Wlan.

Install

root@OpenWrt:~# opkg install owserver owfs         
 

Using

root@OpenWrt:~# owserver -u -C --usb_regulartime -p 3001

root@OpenWrt:~# mkdir /mnt/1-wire         


root@OpenWrt:~# owfs -s localhost:3001 -m /mnt/1-wire

root@OpenWrt:/mnt/1-wire/10.87507C010800# ls /mnt/1-wire/
10.87507C010800  81.543A2A000000  alarm            bus.0            settings         simultaneous     statistics       structure        system           uncached

It works!         
 

To make sure that owserver starts when the router is rebooted, add to /etc/rc.local


/usr/bin/owserver -u -C --usb_regulartime -p 3001

Firewall

My op5 Monitor/Nagios system is on the Wan side of the OpeWRT box so I need to open the firewall to port 3001.

Add to /etc/config/firewall

#1-wire ok on Wan
config rule
    option src        wan
    option dest_port    3001
    option target        ACCEPT
    option proto        tcp
 

Result

To gather the data from 1-wire I use op5 Monitor and my Nagios plugin check_1-wiretemp, the result can be seen below

Links

• OpenWrt
• owfs
• op5 Monitor

It is real simple, just add to following to /etc/config/firewall:

#open ssh on wan interface
config rule               
        option src              wan
        option dest_port        22
        option target           ACCEPT    
        option proto            tcp 

And restart the firewall:

#/etc/init.d/firewall restart

After struggeling with my Linksys WRT-160NL to get OpenWRT stable I finally gave up. It ended upp with DD-WRT instead. Unfortunatly DD-WRT do not have the functionality I want like:

-rndis device so I could use my Android phone to connect to Internet

-1-wire device support

-Nagios agent

The solution was to buy another device where OpenWRT support is working better with USB and Gigabit interfaces. After some research I found TP-Link TL-WR1043ND for approx 50€.

Unpacking

The TL-WR1043ND package is good looking and has a printed GPL license included, that is impressive.

The basic installation with TP-LINK installed firware was easy and stright forward with all information you need in a simple "Quick installation Guide". No need for installing software on a windows machine to be able to access you new device. I think Cisco/Linksys has something to learn.

Installing OpenWRT

Find the Firmware upgrade menu and upload this firmware. It worked perfectly well and seems very stable. A positive suprise is that the WLAN seems to reach longer then the WRT 160NL.

Conclusion

The TP-LINK TL-WR1043ND seems to be a good Wlan router that has a good support for OpenWRT, with USB, Gigabit ethernetinterfaces and good Wlan range.

Background

After waiting for the Hummingbird release for the LaFonera 2.0G a long time and discussed with the Fon support team when 3G dongles will work, I gave up and installed OpenWRT on my LaFonera 2.0G router.

I’m sorry FON, you have a cool idea and nice routers but your unlogical approach to the users and communtity, finally got me to install plain OpenWRT instead.

Installation

After alot of googling and testing and downloading, reading and so on, I finally run into a guide that worked for me.

Most of the descriptions and howto assumes that the RedBoot will accept to download a new firmware via TFTP, this is true with the early releases of 2.0G , but the one sold now do not have this feature.

The trick is to install a firmware that allows changing the RedBoot partition of the memory, change the RedBoot parttion and install OpenWRT via TFTP.

The guide is unfortunatly in French, but google translate helped me to translate it to English.

The pitfalls I run into is to reboot the device several timesafter installing the hacked version of FON firmware: FON2202_2.2.5.0_Flipper_RedBootC_VoteGOP.image

The only difference is that I used a later version of OpenWRT. I used Backfire 10.03 instead of Kamikaze 8.9.1