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Joined 1 year ago
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Cake day: June 11th, 2023

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  • Long shot, but does anyone know of any mapping app where you can easily project a bearing/azimuth line, or a point a given bearing and distance from another point?

    The only app I’ve found so far that can come close to what I need is Backcountry Navigator, which has a terrible UI. Everything else seems to be focused entirely on GPS navigation from where you are now to a known destination; I have yet to find one that allows even basic triangulation, to be able to identify the location of an observed object.




  • There is an IOS app for hot air balloon pilots called “Hot Air”. There is a similar app for Android that… Leaves much to be desired.

    There’s several functions that are needed. First, we need a map. We need to be able to enter waypoints and/or polygons charting landing zones, prohibited zones, targets, etc. we need an easy way to select targets, and our bearing and distance to those targets.

    For planning purposes, we need a bearing line that we can place and move on that map. We need to be able to easily drag and drop each end of the line, and get the bearing and distance between the endpoints.

    Next, we need track recording. It should record a ground track during flight, preferably with altitude information, and notes about the flight.

    Next, a wind map. The wind speed and direction varies considerably by altitude. It needs to record direction and speed as we climb and descend, telling us what altitude has winds favorable for our current target.

    Bonus points if we can prepopulate that wind map with data from a “pibal” (pilot balloon; a simple latex party balloon released and tracked with compass and stopwatch before a flight)

    Next, coordination with other pilots and ground crews. 3D location sharing between participants; wind map data shared between pilots.






  • and it gets nowhere near those thresholds, the voltage fluctuates in the 224-234 range.

    I’m assuming you measured hot to neutral, and didn’t find any transients.

    Did you put your oscilloscope on hot to ground as well? A faulty ground could cause what you are seeing.

    Do you have any CFL bulbs anywhere in your house? I once had a dead CFL bulb in a fixture in my basement. Anytime I turned on my basement light, every LED lamp in the house would strobe.


  • Without the VPN, your ISP knows you are making a DNS request, but they can’t see what domain you are resolving. A moment later, they see the IP that request resolved to, when you request that site. They can see how much encrypted traffic is going back and forth. When they see that the IP address hosts a porn site, and traffic analysis shows you’re starting and stopping video streams, they know you’re jerking off, but can’t figure out your specific fetish.

    With a VPN, your ISP only ever sees the VPN’s IP address. They know when you are sending and receiving traffic to/from that IP, but they don’t know the original source. With traffic analysis, they can probably figure out that you’re watching videos, but they probably can’t distinguish between YouTube and YouPorn.