• 2 Posts
  • 29 Comments
Joined 7 months ago
cake
Cake day: March 30th, 2024

help-circle



  • San Francisco’s critical mass was successful to the point it almost doesn’t exist anymore (it’s not necessary anymore with better political engagement). I believe it was successful because it:

    • started at the same location and time (once a month on a Friday)
    • occurred during evening commute hours
    • had no formal leadership
    • no planned route until just before departure

    This combination meant authorities had no ability to shut it down. What office could the raid? How could they bring a lawsuit?

    Once a month on a Friday meant it didn’t have to be about your commute. Rather you’d leave work and ride to the start point. It was a protest first and a utility second (though the route did start from the financial center of the city).

    Take a look at bike parties if you’re looking more for a community ride. They bring more of a general supportive base than as a protest.









  • I’m not car-free, but I do all my grocery shopping without a car. In fact, I’m at my local grocer as I type at 1.7 miles away taking 250 feet elevation gain and 210 feet loss. I understand your pain!

    Here’s why I still think a bike fits your situation. Namely an inexpensive folding bike with a front basket and rack.

    Hills are conquered in the same way as a cart: walking uphill. Also known as “hike a bike.” Folding bikes are usually also allowed on busses, so you could take a bus one way. You could time your departure to a bus schedule and shop knowing you don’t have to rush or spend a long time at the store.

    Folders can be brought inside and consume about the same space as a folding trailer.

    My overall point is a folding bike is a trailer that you can ride downhill in. Electric would be a nice upgrade, but it’s not necessary.










  • You’re probably decoding noise or in the middle of the bit stream.

    What you’re looking for is called “preamble.” That’s a sequence of bits used to synchronize the decoder (marks the start of data, useful in modulation schemes for clock recovery, and a few other things).

    Looking at minimodem’s manual, try using the sync-byte option. Prepend your tar stream with a string of bytes, like 0x01, before sending to minimodem for encoding. Then use the sync code option to mark the start of the tar bit stream. This is as simple as cat preamble.bin myfiles.tar | minimodem --tx …

    Other things to consider: start small with 300 baud BFSK before speeding up. Test with wav files before attempting physical tape or speakers and a microphone.