Robot Practice Field Network

While using FRC radios in the default configuration is easy to set up, having to connect to an isolated robot access point is inconvienient during development when Internet access is useful. We have installed OpenWRT on the Open Mesh OM5P-AN used on our robots to allow us to connect to our robot via shop WiFi. This also helps with WiFi packet loss we experienced with our Driver Station laptops since we can now connect them to our shop network via Ethernet.


network diagram

Open Mesh OM5P-AN Radio

The radio is configured using OpenWRT as a router with its WiFi interface connecting to our shop network with static IP address and its ethernet ports on the network. The OpenWRT configuration backup is on the team’s Google drive.

The interfaces have the following configuration:

config interface 'lan'
        option force_link '1'
        option type 'bridge'
        option proto 'static'
        option netmask ''
        option ip6assign '60'
        option _orig_ifname 'eth0 radio0.network1 radio1.network1'
        option _orig_bridge 'true'
        option ipaddr ''
        option gateway ''
        option broadcast ''
        option ifname 'eth0 eth1'

config interface 'wwan'
        option _orig_ifname 'wlan1'
        option _orig_bridge 'false'
        option proto 'static'
        option ipaddr ''
        option netmask ''
        option gateway ''
        option broadcast ''
        option dns ''

The WiFi connection to our shop’s network has this configuration:

config wifi-iface
    option ssid 'SYKFRC'
    option encryption 'psk2'
    option device 'radio1'
    option mode 'sta'
    option bssid '82:2A:A8:58:5F:6B'
    option key '<wifi password>'
    option network 'wwan'

The firewall has this configuration:

config zone
    option name 'lan'
    option input 'ACCEPT'
    option output 'ACCEPT'
    option forward 'ACCEPT'
    option network 'lan'

config zone
    option input 'ACCEPT'
    option forward 'ACCEPT'
    option output 'ACCEPT'
    option name 'sykfrc'
    option network 'wwan'
    option mtu_fix '1'
    option masq '0'

config forwarding
    option dest 'lan'
    option src 'sykfrc'


Our router is configured with a static route to the robot radio.

static route
static route


Some material referenced when setting this up.


Indiana Robotics Invitational
Lawrence North High School
7802 Hague Rd
Indianapolis, IN 46256
Mid Mitten Robo Rodeo
Lakewood High School
7223 Velte Rd.
Lake Odessa, MI 48849
West Michigan Robotics Invitational
Zeeland East High School
3333 96th Ave.
Zeeland, MI 49464

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