diff --git a/openwrt-add-gps.sh b/openwrt-add-gps.sh
index 772e1e8..ae65aa5 100755
--- a/openwrt-add-gps.sh
+++ b/openwrt-add-gps.sh
@@ -1,5 +1,31 @@
 #!/bin/sh
 
-opkg install kmod-usb-acm
+if [ $# -lt 1 ]; then
+    echo "$0 ip-address"
+    echo "    ip-address: where to find the device"
+    exit 1
+fi
 
-# ugps?
+
+set -x
+
+openwrt_ip=$1; shift
+
+ping -c3 ${openwrt_ip}
+if [ $? -ne 0 ]; then
+    echo "Cannot reach ${openwrt_ip}, aborting"
+    exit 1
+fi
+
+cat <<EOF | ssh -t "root@${openwrt_ip}"
+set -x
+
+opkg update
+opkg install kmod-usb-acm gpsd
+
+uci set gpsd.core.enabled=1
+uci set gpsd.core.listen_globally=1
+uci set gpsd.core.device="/dev/ttyACM0"
+uci commit
+
+EOF