Yeah, OK, maybe the 0 C value is not ideal for a robotics application. Anyway, the observation is that usually sonic snow depth sensors seem to have a thermometer involved, so I looked it up. The variation in the sound velocity turns out to be 0.61 m/s per degree C, or 0.2% per degree, which is bigg...

Actually I have one more question. Do you know what sound velocity in air is assumed by the sensor? I am guessing it is the standard value of 331.3 m/s?

Just to complete this thread, I hooked it up with 22 meters of 18 gauge wire and it works. It successfully switches out of quiet mode and detects the ground at 4 meters.

Now I have to wait for it to snow to find out if it can actually see the snow surface.

Or, obviously I could figure that out if you can give me an idea of what the maximum allowable voltage drop is. Looks like I should have tested this before going straight to the long cable.

Aha. It works fine with a 3-meter cable. Unfortunately the needed location is a lot more than 3 meters from the hub. Thanks. I just used the 26 gauge 3-conductor hookup wire that you sell to extend the VINT cable to 25 m. I assume you have messed around with long VINT cables before, so do you have a...

I am attempting to find out if a DST1200_0 sonar distance device can be used as a snow depth gauge. Step 1 of this is that I have mounted it about 4 meters off the ground facing down. It appears that this is too far for a reliable return in the default quiet mode, so I am attempting to turn off quie...

I was just reading this thread and want to add a comment that it would be useful if devices could have persistent state. I have been working on a SBC + analog voltage output Phidgets setup to control a set of high voltage sources. The Phidgets supply a control voltage. If the control voltage goes do...

Yup, that seems to be the problem. Adding by IP was successful. thanks,

Question about installation problem on a Raspberry Pi. I have a Phidgets wireless VINT hub connected to some temperature sensors. This is in wireless mode and is on the local network. Using a laptop running Ubuntu 18.04 on the wireless network, I installed the Phidgets libraries and Python packages....