Posts made by Austin Hendrix

I'm still playing with the meshing myself, and the setup can take a while.

This describes some of how to setup batman on openwrt: http://www.open-mesh.org/projects/batman-adv/wiki/Batman-adv-openwrt-config

Start by building a new OS image for the Omega with support for Batman and avahi. Once I had the Omega image building, I had to do so something like ./scripts/feeds install batman-adv ; and similar for avahi; I forget the exact package name. You should be able to find the package names you need by sifting through the feeds directory. You'll also need to run make menuconfig to enable batman-adv and avahi in the build.

If you don't understand the build process or aren't comfortable flashing a new OS image onto your Omega, you probably shouldn't try.

Keep your USB cable handy; I'm using the USB-serial console for all of my development and debugging, because I have to disable the connection to other wireless networks.

I'm using the following network and wifi configs:

/etc/config/wireless

config wifi-device 'radio0'
        option type 'mac80211'
        option hwmode '11g'
        option path 'platform/ar933x_wmac'
        option htmode 'HT20'
        option disabled '0'
        option channel '6'
        option txpower '30'
        option country 'US'

config wifi-iface 'wmesh'
        option device 'radio0'
        option ifname 'wlan1'
        option network 'wlan1'
        option mode 'adhoc'
        option ssid 'Onion-Mesh'
        option 'mcast_rate' '18000'

and
/etc/config/network

config interface 'loopback'
    option ifname 'lo'
    option proto 'static'
    option ipaddr '127.0.0.1'
    option netmask '255.0.0.0'

config interface 'wlan1'
    option mtu '1532'
    option proto 'batadv'
    option mesh 'bat0'

and the default batman-adv config.

There's still some manual startup to do to get the mesh up, once the AdHoc connection is established:

$ ip link set bat0 up
$ avahi-autoipd bat0 &

@Boken-Lin : yeah, I haven't turned it on since I measured the voltages. I'm a little amazed that it kept working at those voltages, and doesn't seem damaged.

My shipping address is still the same. Do you want me to send the bad dock back for analysis?

I tried swapping the docks on my Omegas (both expansion docks), and now the other Omega gets hot; so I think this is a problem with the dock.

It looks like the dock has a voltage regulator on it, so I measured the voltages on the expansion connector.

The 5V pin reads 4.7V
The 3.3V pin reads 4.6V
The 2.5V pin reads 2.8V
The 2V pin reads 3.5V

On my other dock, the voltages are all within 10% of the printed value.

I borrowed a temperature sensor and measured both of my Omegas. One is about 39C, and the other is at 54C. Is that within tolerance for the Omega?

Adhoc mode works if I don't use the BSSID setting on both Onions, and if I disable the Infrastructure connection to my home network.

/etc/config/wireless on Onion 1:

config wifi-device 'radio0'
        option type 'mac80211'
        option hwmode '11g'
        option path 'platform/ar933x_wmac'
        option htmode 'HT20'
        option disabled '0'
        option channel '6'
        option txpower '30'
        option country 'US'

config wifi-iface
        option device 'radio0'
        option ifname 'wlan0'
        option mode 'sta'
        option network 'wwan'
        option ssid 'NotMySSID'
        option encryption 'psk2'
        option key 'notmypassword'

config wifi-iface 'wmesh'
        option device 'radio0'
        option ifname 'wlan1'
        option network 'wlan1'
        option mode 'adhoc'
        option ssid 'Onion-Adhoc'
        option 'mcast_rate' '18000'
        option bssid '42:a3:6b:c1:22:f0'

/etc/config/network on Onion 1:

config interface 'loopback'
    option ifname 'lo'
    option proto 'static'
    option ipaddr '127.0.0.1'
    option netmask '255.0.0.0'

config interface 'wwan'
    option proto 'dhcp'
    option hostname 'OnionOmega'

config interface 'wlan1'
    option proto 'static'
    option ipaddr '10.0.0.2'
    option netmask '255.255.255.0'

ifconfig wlan1 on Onion 1:

root@Omega-22EF:/# ifconfig wlan1
wlan1     Link encap:Ethernet  HWaddr 42:A3:6B:C1:22:F0  
          inet addr:10.0.0.2  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::40a3:6bff:fec1:22f0%4566072/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:864 (864.0 B)

/etc/config/wireless on Onion 2:

config wifi-device 'radio0'
        option type 'mac80211'
        option hwmode '11g'
        option path 'platform/ar933x_wmac'
        option htmode 'HT20'
        option disabled '0'
        option channel '6'
        option txpower '30'
        option country 'US'

config wifi-iface
        option device 'radio0'
        option mode 'sta'
        option network 'wwan'
        option ssid 'NotMySSID'
        option encryption 'psk2'
        option key 'notmypassword'

config wifi-iface 'wmesh'
        option device 'radio0'
        option ifname 'wlan1'
        option network 'wlan1'
        option mode 'adhoc'
        option ssid 'Onion-Adhoc'
        option 'mcast_rate' '18000'
        option bssid '42:A3:6B:C1:22:F8'

/etc/config/network on Onion 2:

config interface 'loopback'
    option ifname 'lo'
    option proto 'static'
    option ipaddr '127.0.0.1'
    option netmask '255.0.0.0'

config interface 'wwan'
    option proto 'dhcp'
    option hostname 'OnionOmega'

config interface 'wlan'
    option proto 'static'
    option ipaddr '192.168.3.1'
    option netmask '255.255.255.0'

config interface 'wlan1'
    option proto 'static'
    option ipaddr '10.0.0.3'
    option netmask '255.255.255.0'

ifconfig wlan1 on Onion 2:

root@Omega-22F7:/# ifconfig wlan1
wlan1     Link encap:Ethernet  HWaddr 42:A3:6B:C1:22:F8  
          inet addr:10.0.0.3  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::40a3:6bff:fec1:22f8%4566072/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:864 (864.0 B)

I can't ping 10.0.0.3 from Onion 1, and I can't ping 10.0.0.2 from Onion 2.

As far as I can tell, the trouble I'm having is actually with the adhoc networking; I can't even get my two Omegas talking to each other with an adhoc network and statically assigned IP addresses.

Yep! I'm running the same image on both, with the same settings.

I'm experimenting with the wifi settings, so I'm not running anything more than busybox and ping.

I'm experimenting with B.A.T.M.A.N. on the Onion Omega, trying to get a mesh network set up. Has anyone else tried this?

batman is based on adhoc networking, but I haven't been able to get the adhoc networking to work between my two Onions either.

Has anyone else been able to get adhoc networking to work on their onion?

When working with my two Onion Omega devices, one of them gets too hot to touch. Is this a manufacturing variation or is there something wrong with my Onion?

My other Onion also gets quite warm, but it's not too hot to touch.