Hi
Has anyone got advice for how to get a DS18B20 1-wire temperature sensor to appear on an Omega2?

Following the instructions on https://wiki.onion.io/Tutorials/Reading-1Wire-Sensor-Data I have setup the gpio pins:

echo "w1-gpio-custom bus0=0,19,0" > /etc/modules.d/55-w1-gpio-custom
And connected the sensor to power, gnd and pin 19 with an appropriate resistor across power and pin 19.

However I don't see my sensor in either /sys/devices or /sys/bus/w1/devices

I have checked on a Raspberry Pi that the sensor works in that configuration.
Omega2 Device Firmware Version: 0.1.7 b139

Appreciate any help