Barnaby Walters

Arranging atoms and pressurising air in a variety of manners.

✨🌟 shiny inevitable mortality distractions! 🛠 building a cultural heritage centre at Wassermühle Brömsenberg 💃🏻 playing old music for new dancing with Duo Gerhardt & Walters 🎼 building hurdy gurdies, playing gurdy blockflute dulcimer accordion Pd voice 🚀 building the indieweb ❤️ philosophising inexpertly about how humans communicate, relate and connect ⚖ helping assess the Icelandic school system at Skólapúlsinn 🍕 baking pizza, granola, bread 🌟✨

Pronouns: he/him/his

  1. Talking of [filterview] (gh), here’s the abstraction I made for it, incorporating stereo smooth filters and a nice mode switching UI made of a [hslider] hidden behind a bunch of canvases.

    Each canvas has a receive ID of $0- plus the symbol for the relevant filter mode, making the message sending for changing the colours easy.

  2. [biquad~] clicks and pops when changing coefficients, which is annoying when they’re coming from the [filterview] UI. The best way I found of smoothing them was to alternate between two biquad~ objects and crossfade between them over 3ms. This approach, while a little cludgy, is probably generalisable to a lot of similar Pd situations where smooth transitions are desirable.

  3. emma winston: For someone who complains bitterly about everything I sure am easily pleased by rain/thunderstorms

    oh man, I go wild in thunderstorms and high winds. I have yet to find somewhere with both, Iceland had great wind but no thunder, central europe is the other way round.

  4. Joschi Kuphal 吉: Walking over to @a11yberlin now after having a delicious bowl of Pho w/ @t & friends. Thank you, it was a pleasure! pic.twitter.com/44lxVwJi32

    @jkphl @t how long are you all in Berlin? I’ll be headed that way on Saturay or Sunday, would be great to meet up if you’re still around!

  5. holy indifference: I have not! Will keep a look out. The Centrotrans drivers are my besties though.

    Their website vectortours.de is one of the most confusing I’ve ever seen. A German domain with a weird mixture of Albanian and German text. Most of the phone numbers don’t work, and when I tried calling the German number and asked in German about their lines from Macedonia to Montenegro, they were dumbfounded and had no idea what I was talking about. Some of the ticket desks in Skopje firmly denied the existence of the company, until we eventually found one who gave us a ticket. Then, by chance, we ended up staying in a hostel in Prizren which was literally next door to the Vector Tours office, which was adorned with three completely different logos! I think some other weird stuff happened which I forgot, but in total this was enough to cement them as a semi-legendary entity and permanent in-joke.

  6. holy indifference: I have a whole four upcoming long distance bus trips this month and ~none~ of them are with @Flixbus. What uuuuuppp finally I'm seeing other people. [...] https://rhiaro.co.uk/2018/05/upcoming-bus #travel

    Have you ever traveled on a “Vector Tours” bus? They became something of a personal legend after my Balkans trip

  7. Some tips for building a Mutable Instruments Ambika, based on my experiences:

    Based on the part numbers in the BOM, suppliers will sometimes pick a CD4050 chip. These are not fast enough and will cause SD card access to fail, it’s necessary to use a 74HC4050.

    If you’re using a 74HC4050 and SD card access is still failing, check whether communication with all of the voicecards works. I had a lot of issues where failing or badly connected voicecards would interfere with the serial lines and prevent SD card access from working.

    The 3.3V regulator, DACs and all the MCUs can be obtained free from the Microchip samples service if you’re willing to do it over a few months in limited quantities of two part numbers at a time.

    My Pololu USB AVR Programmer wasn’t able to provide enough power whilst programming, so I had to power the boards for programming. For the voicecards, having both 6 pin headers connected interfered with programming because of data being sent to the voicecards over the serial lines. I ended up powering up the motherboard, placing a stackable connector in the power/audio socket voicecard socket and plugging the voicecard into that for flashing, so that it’s powered but the serial lines are disconnected.

    I programmed my Ambika with the YAM firmware to get those smooth sounding PolyBlep square and saw waves. I built the firmware myself, downloading CrossPack 2010-01-15 which provides avr-gcc 4.3.3, the correct version for compiling most old MI AVR firmwares.

    I would recommend buying higher quality pots and encoder with metal shafts rather than the flimsy plastic ones in the BOMs. There are so few on the Ambika that the added expense is only a few euros in total. An Ambika is such a large time and financial investment that there’s really no reason to use flimsy, wobbly plastic pots.

    I got my PCBs from the Pusherman group-buy, they‘re very cheap and work fine.

  8. I built an Ambika to join my family of Walnut Mutables!

    I messed up the LED holes in this one, but the laser engraved front panel graphics and text came out really well. The back panel is acrylic so I can admire my electronics handiwork and Olivier’s amazing design any time.

    I took the opportunity to give my Shruthi a knob upgrade, too.

  9. Aaron Parecki: TIL booting to OSX "safe mode" disables the touch bar completely, so there is no way to press the escape key in safe mode

    did someone already create a USB keyboard with just the esc key on? What’s one extra dongle to a modern macbook user anyway?

  10. ♫ Folded Peaks

    beneath every surface the gnarls of a
        biological
            geological
    lifetime, revealed in passing by passing surfaces
    sudden depths, a scream erupting
    unexpectedly, harmony

    Walnut Ambika + Colorsound Overdriver

  11. Blaine Cook: Apparently personal use is exempted. Wasn't clear to me reading through, but makes sense.

    AFAIK the big questions for the “personal use” exemption is exactly where the boundary is between personal and commercial usage. Most of the stuff I read about it so far agreed that it’s vaguely worded.

  12. Andrew Dove: Sorry for the late reply. Its a song called "The Green Man" from the abluk / show "Cry of Tin" by the Cornish Songwiters.

    @BurntToast_DFIR fantastic, thanks! Any idea where I can get a copy of the CD?

    EDIT: I found it, the website is a bit labyrinthine.

  13. Successfully exhibited my acoustic/electric/electronic gurdy at the Mazurki Festival Tagowisko Instrumentow! Thanks to everyone who came by, and a special shout-out to the one person who recognised the Shruthi XT!

  14. Dramatic happenings at the mill last night! A huge dead tree fell over the bridge, causing a minor earthquake. Nobody hurt apart from a fence (which fortunately doesn’t even belong to us)