Sequoia Alexander 🌲✨ 林灵 (she/her) 🏳️‍⚧️✨🦄
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sequoia.farm
Sequoia Alexander 🌲✨ 林灵 (she/her) 🏳️‍⚧️✨🦄
@sequoia.farm
1.7K followers 320 following 2.2K posts
Robotics engineer, anarchist, open source contributor. Abolish prisons. Trans rights. Free Palestine. All people deserve food and shelter and love. I’m actually a dog dressed as a bicyclist woof woof. Sometimes feral. Oakland, CA - alt: @feral.sequoia.farm
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sequoia.farm
Thank goodness for tubeless sealant 😅
My rim is bent badly on my bike in one spot, and tubeless tire sealant leaked out and then sealed itself
November 25, 2025 at 5:50 AM
sequoia.farm
Thinking about HER
A top view of a circuit board for a farming robot, showing the raspberry pi compute module and many connectors The back of the motherboard showing the full text of carl sagan's "pale blue dot" speech, as well as a note about an open license, encouragement to fork the board, and the words "love everyone"
November 22, 2025 at 10:26 AM
sequoia.farm
look of course I cite my sources
The bypass effect spans the full set of risk categories represented in our evaluation. Poetic prompts triggered unsafe outputs across CBRN-related domains (reaching 68% ASR for revival of dangerous agents, Loss of control scenarios (reaching 60% ASR for model exfiltration; Table 4, and harmful manipulation (reaching 60% for public health deception); Table 4. This distribution suggests that poetic framing interferes with underlying refusal mechanisms rather than exploiting domain-specific weaknesses.
November 22, 2025 at 7:38 AM
sequoia.farm
girl who has NO respect for her linear regulator circuit 😭
a poorly laid out linear regulator circuit
November 22, 2025 at 7:22 AM
sequoia.farm
towards the end of a project I like to take a step back and look more at this like a nest of wires to untangle. during layout you look to find any connection you can. once 100% routed you can begin to clean it all up ✨ I'm stoned and vibin with good music and its chill work 🐶
a screenshot of a PCB editor program showing a bunch of wires on different layers, with some outlined component markers. a somewhat abstract view of the circuit as a nest of wires to unravel
November 22, 2025 at 6:38 AM
sequoia.farm
Can anyone familiar with switch mode power supplies comment on this layout? I always forget the advice I have been given and just kinda do them based on vibes, prob rely too much on fat traces. Plz repost. 💜🙏 Also I am using @thea.codes' lovely Witch Hazel theme for Kicad. ⚡
Close up view of a few chips and passives in a switching power supply pcb layout schematic view of this layout
November 21, 2025 at 8:22 AM
sequoia.farm
My board is designed to go with my Raspberry Pi compute module motherboard so you can have a 60V DC power circuit that runs all your motors and central coordination via a dedicated CAN bus circuit. You can even update motor controller firmware over CAN bus. github.com/sequoia-hope...
An image of a circuit board with a raspberry pi compute module and a bunch of connectors, plus a 7 segment display
November 21, 2025 at 8:00 AM
sequoia.farm
Made some updates to the USB-C PD circuit and pushed to github. You can view the board in this web viewer [1]. I also remembered I made this smaller than a credit card or a business card! I could use this as a cool circuit board business card. ⚡

[1] kicanvas.org?github=https...
Screenshot of the PCB showing all the layers at once, with the ground planes hidden. Screenshot comparing the board to a standard business card or credit card
November 18, 2025 at 9:17 AM
sequoia.farm
Adding alt text like a communist
Linus Torvalds torvalds * Reply to Edited yesterday yesterday # @morgthorak I think you might want to make sure you don't follow me. Because your "woke communist propaganda" comment makes me think you're a moron of the first order. I strongly suspect I am one of those "woke communists" you worry about. But you probably couldn't actually explain what either of those words actually mean, could you? I'm a card-carrying atheist, I think a woman's right to choose is very important, I think that "well regulated militia" means that guns should be carefully licensed and not just randomly given to any moron with a pulse, and I couldn't care less if you decided to dress up in the "wrong" clothes or decided you'd rather live your life without feeling tied to whatever plumbing you were born with. And dammit, if that all makes me "woke", , then I think anybody who uses that word as a pejorative is a f*cking disgrace to the human race. So please just unfollow me right now.
November 17, 2025 at 11:34 PM
sequoia.farm
Let me just go over and use the uhhhhh skat blast system.
Logo for a machine called “skat blast dry blast system”
November 14, 2025 at 12:31 AM
sequoia.farm
I got a second needle bed for my 1990’s knitting machine that I’ve modded with #ayab (all yarns are beautiful) www.ayab-knitting.com
Photo of a 1x1 ribber stitch on my knitting machine Photo of the knit with my hand behind it Close up of the knit
November 13, 2025 at 9:11 AM
sequoia.farm
🧶 DOUBLE BED ACTION 🧶
November 13, 2025 at 9:08 AM
sequoia.farm
I have made great progress on my RP2350 powered open source brushless motor (and industrial stepper) controller! This board supports up to 53v max, 30+A peak (depends on thermals), and is designed so anyone can order them from JLCPCB. I also just added USB-PD for 100W at 20V via USB-C!
Screenshot showing the top of my board layout in 3D Screenshot showing the bottom of my board layout in 3D.
November 12, 2025 at 9:37 AM
sequoia.farm
Apple has activated Sequoia’s ✨special interest✨

I’m literally making a bag right now with a very similar design to Apple’s lol. See also my comment on hacker news about the 3D knitting aspect of it. 🧶
A bag I am making out of brown and tan wool with 木 (Chinese symbol for tree) on it. It has a very similar design to apples bag. Screenshot of Apple website announcing iPhone pocket, a piece of 3D knitwear. An image of the knit phone pockets. Amazing that Apple would prominently highlight a product made with 3D knitting, as I’ve just gotten in to machine knitting as a hobby after buying an old Brother KH-910 on eBay and modding with with an AYAB (all yarns are beautiful)[1] open hardware/software knitting machine board from the AYAB discord. I just got a second needle bed for my knitting machine (KR-850 ribber) so I can do double bed jacquard knitting and other more advanced stuff. But this has also led me down the rabbit hole learning about industrial machine knitting and 3d “wholegarment” knitting, invented by Masahiro Shima first in the 1960’s for autonomous glove knitting and later for entire full size garments in the 1990’s. [2,3,4] That’s what Apple is using in this product (now two companies offer 3D knitting machines according to Wikipedia). In traditional machine knitting you still have to make multiple flat sections and stitch them together, but in 3D Wholegarment knitting the machine is capable of knitting an entire complex garment, bag, utility item, whatever all in one go fully autonomously. Shima Seiki invented a new kind of knitting needle and expanded the system from two needle beds to four to enable the most advanced form of Wholegarment knitting. What I find fascinating about this technology is that it makes it possible to run a garment manufacturing business which is almost fully autonomous, eliminating the need for often poorly treated overseas labor [5], and potentially simplifying business operations dramatically. The piece linked in [2] talks to an Italian knitting company that was able to keep manufacturing domestic thanks to these machines, and this helps explain how Apple can offer these bags as made in Japan in these volumes. I daydream about getting a used Mach2x and parking it somewhere to make it run 24/7 to make warm garments for the homeless around the Bay Area, perhaps with a low volume boutique fashion brand which helps pay for it. Anyway they’re really neat machines and…
November 12, 2025 at 12:02 AM
sequoia.farm
The Hiatchi in question, because dudes love to do home construction while they talk about sports.
An image of an electric power drill, hitachi brand.
November 10, 2025 at 10:06 PM
sequoia.farm
I thought I would share a comment I left on Not Just Bikes’ video on John Forester’s book Effective Cycling. Forester rides like I do, borne of athletic cycling in car infested wastelands, but totally fails to see how unacceptable this is as public transit. People deserve better than this.
@SequoiaAlexander • Os ago It's remarkable to me how much his recommended way of cycling matches my preferred style, and yet thanks to education from this channel and others I understand the great injustice this is for cyclists and the rights of all people to safely select cycling as a mode of transit. I learned how to ride this way in Oakland, which somewhat forces the issue as the only way to exist safely on these streets. (I even forcefully hold lanes against aggressive drivers and confront them at the next light if they behave unsafely). But I am insane!! Obviously this is not an acceptable state of affairs for bicycling or transit. Regular people do not ride like I do and they cannot be expected to. It sounds like Forester wanted to write an advice book for weekend racers who like to shoot around town, but totally failed to understand how bicycle infrastructure can serve the public including the vast majority of the population who would never ride a bicycle the way he did. The crazy thing is I hate riding like I'm always about to be killed! My dream is to close 50% of the roads for cars and build multi use paths for everyone. That would be so much more fun to bicycle through! We have a few fully separated (no driveways) bike paths on the coast and cutting through Berkeley under the elevated BART line and it's so much more pleasant to ride than choking on vehicle exhaust and fearing for death. Thanks for making this video. The way he rode isn't terrible if someone wants to ride like that, but it should never be an expectation for public transit. That simply fails to understand what the public needs and deserves out of public infrastructure. It's too bad there wasn't a Not Just Bikes is his day that might have set him right.
November 10, 2025 at 8:58 PM
sequoia.farm
A classic. ✨🌲🌲
Two trees in eyeliner next to my eye.
November 9, 2025 at 7:33 AM
sequoia.farm
Yaaaa I realized I can interweave the dyneema with something which has more body like this pink cotton. This is much more usable as a material! It was too thin otherwise, though the pure dyneema could work as a liner for internal bag pockets.
A weave of pink cotton and dyneema in a rectangular swatch.
November 8, 2025 at 7:34 PM
sequoia.farm
Testing knitting with 10kg rated dyneema threads
A small knit swatch 20 stitches wide and extending downward
November 8, 2025 at 6:17 PM
sequoia.farm
Dog [engineering] - it’s meeee 🐶
Wikipedia for Dog (engineering): In engineering, a dog is a tool or part of a tool, such as a pawl, that prevents or imparts movement through physical engagement.[1] It may hold another object in place by blocking it, clamping it, or otherwise obstructing its movement. Or it may couple various parts together so that they move in unison – the primary example of this being a flexible drive to mate two shafts in order to transmit torque. Some devices use dog clutches to lock together two spinning components. In a manual transmission, the dog clutches, or "dogs" lock the selected gear to the shaft it rotates on. Unless the dog is engaged, the gear will simply freewheel on the shaft.
November 8, 2025 at 12:44 AM
sequoia.farm
I got a haircut! Actually my first haircut in idk like ten years lmao
Cute selfie outside showing my new hair Cute selfie outside showing my new hair Cute selfie outside showing my new hair Cute selfie outside showing my new hair
November 7, 2025 at 10:45 PM
sequoia.farm
Okay I fixed the cam alignment issue caused by the yarn ball jam in the cam mechanism (my fault). However I had an issue in the 木 pattern with this ghosting problem. My machine might skip alignment when doing the checker background pattern. But I re-aligned it a second time. Let’s hope it holds. 🐶
A knit pattern of 木 with a ghosting issue The text “bark” knit in brown and white
October 30, 2025 at 7:10 PM
sequoia.farm
Last couple days of knitting! I made a text to knitting pattern generator which I used in two of these. The other is a free pattern that was published by the machine manufacturer. I can do a lot! Now to plan projects… 😸🧶⚡️ #ayab #knitting
The text “the quick brown fox jumped over the lazy dog” knit on to a textile. A beautiful pattern with butterflies and a diamonds cross cross pattern A large light purple rectangle with the text “gay” in dark purple in the center.
October 28, 2025 at 8:27 AM
sequoia.farm
Haven’t posted a bike joint selfie in a while. I ran out of pre-rolls! 🐶
Selfie of me smoking a joint in my bike helmet.
October 28, 2025 at 4:01 AM
sequoia.farm
Yoooooooo I got my AYAB-hacked knitting machine workinggggggg let’s goooooooo. ⚡️🧶✨ #ayab #knitting #arduino

www.ayab-knitting.com
An image of a knit fabric textile made of pink and blue yarn. It is a rectangle with a pattern of repeating triangles as well as a Christmas themed pattern.
October 25, 2025 at 7:11 PM