• 0 Posts
  • 21 Comments
Joined 3 years ago
cake
Cake day: June 12th, 2023

help-circle


  • And that’s only, like, the most basic part of an industrial e-stop. On top of directly disconnecting the energy source, it also has to include redundant circuits (since it’s possible for a contactor to break and fail open, or weld and fail closed), and some even need to have signal pulses constantly going through them to actively confirm they haven’t been pressed. They absolutely should not just send a signal to a Linux computer, because general-purpose operating systems are too complex to be rated for safety.

    This isn’t even my area of expertise yet I know this stuff. The fact that they failed at the very first requirement is really messed up.








  • Actually, it’s more the opposite. Sorry, I don’t think I explained too well. The watch works just fine on its own without a smartphone. For functions that require phone and watch working together, Gadgetbridge lets them communicate (e.g. when you receive a text message on your phone, Gadgetbridge will let you read the text on your watch).

    The apps on the watch will work with or without a smartphone. However, installing apps from the Bangle app loader requires the watch have a Bluetooth connection to a phone or computer. After apps are installed, they will run even without the Bluetooth connection.

    Finally, note that the Bangle does not have an internet connection on its own; it has no cellular or wi-fi radios on board. So any apps that require a network connection (e.g. weather) will only work when paired to a phone with Gadgetbridge. I think there are other watches with wi-fi, but I’m not familiar with them.





  • That sounds like an issue with the underlying OpenStreetMap data that is used by Organic Maps (and CoMaps, and OsmAnd, and others). Map quality depends on where you are in the world and who is contributing to the maps there. If data is incomplete around you, you could contribute to it (but easier said than done, I know).

    I can’t say why the route would be hours longer than Google maps, but I’ve noticed OsmAnd~ tends to overestimate drive time for me (I think it overestimates delay from traffic lights). Or it could just be that calculating routes on your phone doesn’t always give results as good as calculating routes on Google’s servers.


  • Automatics also allow for engine braking. From a quick search, it sounds like a toss-up as to whether that triggers brake lights. Regardless, the article mentions the benefit is not only from cars slowing down, but also from indicating that a car is preparing to stop or “that a stationary vehicle might initiate movement”. Neither of those can be done by an engine brake, so front brake lights would still have a benefit even with a driver that likes engine braking.