I am testing the hotfilm recording at 4KHz instead of 2, and because the network throughput sometimes is too slow to prevent buffer overflows on the labjack, I've moved the hotfilm process back to t0t. So it is not a problem if hfd on ustar shows no data or if the hotfilm service is not running. Please do not try to start the service on ustar. When the hotfilm process is running on t0t, you can use the hfd alias on t0t to look at the current hotfilm voltages. While I'm testing, the hotfilm process may not always be running, and it could run in alternate locations.