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

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  • There’s room for batteries in the rail industry.

    Diesel electrics rely primarily on dynamic braking. To save wear and tear on friction brakes, they convert kinetic energy to electrical, and then to heat in a giant resistor bank.

    Add a couple battery cars, and dynamic braking becomes regenerative braking.

    Theoretically, you could back feed the grid with that electrical energy, but if you do that, the train’s primary braking system is now dependent on a connection to the grid, and that doesn’t seem like a particularly good idea to me. All of the “stop” systems need to be far more reliable than the “go” systems.



  • Rivalarrival@lemmy.todaytoLinux@lemmy.mlThe Best way to switch to Linux is to NOT
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    1 month ago

    Fuck all that.

    Install Linux, any flavor. Install virtualbox, and set up a Windows VM. Go ahead and install any of your windows bullshit on that VM. That’s your crutch, your failsafe: a windows instance that you don’t have to leave Linux to access.

    Save snapshots before and after any changes, so if/when it goes to shit, you can roll it back to where it was still working.



  • My first thought (which probably isn’t the best method, but I’ve done similar before) is an Arduino between the mouse and the system. The Arduino normally just passes the mouse commands to the system, but it listens for the button and blocks movement if it sees the button press.

    Because it’s all done in hardware, this method would be system-agnostic. You could plug it into anything.

    I used a Teensy 3.6 for a similar project.





  • The 15% or 20% guidelines are based on the amount of work performed by the tipped employees (who earn less than minimum wage before tips.) the amount of the check correaponds pretty closely to how much time a waiter has to spend serving a table.

    Drivers are not usually employees; they usually have $0/hr in wages, and pay their own fuel and vehicle expenses. Delivery services typically pay $2 per trip, and a trip will involve 2-4 stops. The base pay from the delivery service does not even cover fuel costs, let alone the driver’s time.

    The amount of work a delivery driver performs is not at all related to the amount of the check. The 15%/20% rules are not remotely close to the amount of work the driver performs. $8 on a $20 order is a garbage tip if it’s a 10-mile delivery to a fourth-floor walkup. $4 on a $70 order might be a decent tip if it’s a 1-mile delivery to a front porch.

    The appropriate tip for delivery is based on mileage, not food price. $1 for pickup, $1 for dropoff, and $1 per mile is a pretty basic tip. A driver can complete about 3, $2 runs per hour. $3 tips gives him a gross income of about $15/hr, and he can net about $10-12 of that after expenses.




  • The scenario you describe actually demonstrates my point. Where anonymity is “illegal”, the only entity you can trust to protect your privacy is you.

    That fact does not change when anonymity is “legal”. That fact does not change even when anonymity is mandated. Even if it is a criminal act for me to make a record of who is accessing my service, that is only a legal restriction. It is not a technical restriction. You can’t know whether I am abiding by such a law at the time you are accessing my service. A law mandating anonymity doesn’t actually protect your anonymity; it just gives you the illusion that your anonymity is being protected.

    The relevant difference between your scenario and reality is that in your scenario, nobody is blatantly lying about whether your privacy is under attack: it most certainly is.