@karmanyaahm – Hack Club Scrapbook

Sat, Sep 23

https://scrapbook-into-the-redwoods.s3.amazonaws.com/c1a1769a-6ae2-41c8-a927-72b35f59a8d2-img_20230922_201207.jpg

Mon, Sep 18

MD Tables in Jams!!!

https://scrapbook-into-the-redwoods.s3.amazonaws.com/85e95ed7-23e8-45e2-8619-01b6f1d71c67-img_20230917_201540.jpg

Sun, Sep 17

$14.09 from university auctions, need ideas for what to do with those

https://scrapbook-into-the-redwoods.s3.amazonaws.com/66f924c1-2c24-4cef-a44b-9f85cdaca660-pxl_20230915_183803885.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/fd830d08-40f0-4a22-b4b7-fd6ff55486b7-pxl_20230915_183716153.jpg

Sun, Sep 3

Taking apart a fan to try to backdrive LEDs from its rotation step 1

Thu, Aug 31

(literally) got my hands dirty after a long time with a disassembled motor and a crappy electromagnet

Sat, Aug 26

Using ROS2's multi device communication to send Intel realsense camera data from a Jetson nano to my laptop

Wed, Aug 16

I was wondering why electrical systems have 3 sinusoidal phases and why generators are typically built with 3:4 coils:magnets. So, I graphed the magnetic field strength at various phases to find out: www.desmos.com/calculator/buqj2pdezs

https://scrapbook-into-the-redwoods.s3.amazonaws.com/8d5b7b38-6ff8-4d66-917b-241abc6a3344-image.png

Tue, Aug 15

I invented a revolutionary new technology called SafeMag to make wireless charging better for free, AMA

https://scrapbook-into-the-redwoods.s3.amazonaws.com/64ee8ebc-ae85-443d-bf89-c90dd4d11cb0-screenshot_20230815-160611.png

https://scrapbook-into-the-redwoods.s3.amazonaws.com/647149d1-5a7d-46da-8444-69fcab0029c7-pxl_20230815_212713632.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/f2d5cf92-470f-4e98-909a-58b98bed3ca2-pxl_20230815_212732746.jpg

Sat, Aug 5

I made a thermostat circuit with hysteresis (i.e. dead zone, it'll keep cooling to a lower temperature, and only turn on when rising at a higher temp to prevent rapid cycling) and simulated it in KiCAD's ngspice!!! Using a 555 instead of just an JK Latch because the rest of my circuit uses it. Now let's see if I can replace the Comparators w/ 555s too.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/a95c8b1e-140a-45f4-9781-1716f2ced2fb-image.png

Thu, Jul 27

With the release of this video I can officially say I'm fully done with (the hardware of) my first #onboard PCB: www.youtube.com/watch?v=px2V8bZMeLI

https://scrapbook-into-the-redwoods.s3.amazonaws.com/1876f004-d11a-4a8f-a704-e752bade1ac7-pxl_20230726_151827301.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/e0ecfb70-dd5f-48e5-b206-a4173e291126-pxl_20230726_151333925.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/ec9e6176-4e8e-4cf4-8000-155982b12201-pxl_20230726_151853422.jpg

Mon, Jul 24

It's done!!!

Mon, Jul 24

Sat, Jul 22

Gee, I wonder why my USB interface is not working

https://scrapbook-into-the-redwoods.s3.amazonaws.com/ce3b040c-2cb0-4c82-b5bf-a414cbf2a543-image.png

Sat, Jul 22

The core concept works!

Sat, Jul 22

Angle measurement and USB coming soon #onboard

Mon, Jul 17

Manually recovering each file of my website since Jun '22 from my broken disk image is so fun. Ripgrep is 🔥 though.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/5def65a3-8389-41f8-928d-60c717dc079c-image.png

Sun, Jul 16

I like that Go Replace actually works unlike yarn link

https://scrapbook-into-the-redwoods.s3.amazonaws.com/3a24523b-251c-49cf-8126-44c9f24dfb10-image.png

Fri, Jul 7

Finalizing my workshop and to procrastinate finalizing my workshop I'm making paper 1:1 (2D) mockups for my TOTP device

https://scrapbook-into-the-redwoods.s3.amazonaws.com/39e29d8a-1ce3-4e5d-ac21-d618312ad5fc-img_20230706_215419.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/8a881b05-3c40-4ae8-90d7-0ef8dc920e55-img_20230706_215304.jpg

Sun, Jun 25

Yeah these are easily the 4 hardest to route. Thankfully it's just RESET not a signal or power trace so it can be super thin and jump around a bunch.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/aadb8481-5274-4a64-85ba-5061a94b5097-image.png

Sun, Jun 25

Yay I installed NixOS on an Orange Pi Zero with an Allwinner H2+ (armv7l). Embedding the bootloader in the SD Card image was kinda complicated, but cross compilation simplified things. Here's my flake: gist.github.com/karmanyaahm/5dc741b52dfbf6cbcb32da2fc90a31e3

https://scrapbook-into-the-redwoods.s3.amazonaws.com/cb097402-d1e4-41f8-906e-13b2aae607ef-image.png

Sun, Jun 25

im sooooo close to finishing my #onboard project

https://scrapbook-into-the-redwoods.s3.amazonaws.com/858d4f05-5839-4ce0-ad63-fa97bdd13df1-image.png

Fri, Jun 23

Trying to get an orange pi running

https://scrapbook-into-the-redwoods.s3.amazonaws.com/263ed524-7940-4f52-939a-6bf43729a5b0-image.png

Thu, Jun 22

cuz I obviously had to flip DIN and DOUT in kicad

https://scrapbook-into-the-redwoods.s3.amazonaws.com/7bf9bf34-423b-4e35-912a-9f91b2004f87-image.png

Mon, Jun 19

Ok I spent 5 hours last night trying to figure this out, but what worked was just sleeping. I woke up a Eureka moment regarding this power ORing design. So, I have a battery (say +3V min) and USB (+5V). I want to drive VDrive from the USB when it's connected, else the battery. img1 is what Unexpected Maker's feather s3 does. img2 is the most basic ORing design. img2 will mix the two inputs in the right way because the battery has a lower potential. The BATT Diode has one job: Protect the battery from charging directly through USB. Then, because the battery has a lower potential, the battery won't push current. i.e. when USB is plugged in and VDrive is 4V (assume diode voltage drop of 1V), because the Cathode of the diode is more positive than the Anode, VDrive is 4V & BATT is 3V. So, no current will flow from BATT to VDrive. When USB is unplugged, pretend that half of the circuit doesn't exist and BATT powers VDrive. However, Vdrive will be at 2V, because the diode drops some voltage from BATT. Now, why is img1 better? it seems more complicated. But, the trick is that instead of a fixed voltage drop, turning the MOSFET on causes the drop to be ~100 mOhms. At 1A, that is a .1V drop - significantly better than the diode - not only does it save energy, it allows you to use the battery down to a lower voltage. There are 3 states to this MOSFET arrangement: 1. VUSB is 5V, VBAT is 4V. G > S. Transistor does not conduct. Additionally, since S > D, no potential gets applied backwards onto the battery. 2. VUSB is 0V, VBAT (D) is 4V. G = S = 0. Now, since S < D, current can flow across the body diode. This brings S up to 3V. 3. Now - S = 3V, G = 0V, G < S and the MOSFET is enabled. 4. If VUSB is enabled again now, go back to step 1. None of this probably makes any sense but I should clean it up and write a blog post.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/26964b08-2d2b-48a9-af9e-a6adcfed7eb3-image.png

https://scrapbook-into-the-redwoods.s3.amazonaws.com/50463a7e-9ece-4010-ad66-b284fd581efc-image.png

Tue, Jun 13

me debugging yaml

https://scrapbook-into-the-redwoods.s3.amazonaws.com/e77ccebb-9ebe-4005-9cdc-a5d7e5c464be-image.png

Sat, May 27

PCBing

https://scrapbook-into-the-redwoods.s3.amazonaws.com/2509978d-5b38-484f-a9f2-882c8be539bd-image.png

Tue, May 23

Day 99? of Winter Hardware Wonderland - Project Oreo Custom Rubber Ducky I left a parting gift for my CS teacher. Next year 1st pd CS will find this beauty.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/75756850-8c68-467c-86e2-6d7e73c34d14-pxl_20230523_180446149.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/e7c0e36b-d935-4fa6-81dd-19a5b09f59f3-pxl_20230523_180402220.mp.jpg

Thu, May 11

Soldering male connectors to the headers on an Arduino Nano (We have to get Mr. Robot done next week and don't have time to order proper jumpers 🙃)

https://scrapbook-into-the-redwoods.s3.amazonaws.com/2c98d90d-6214-4908-b2ec-3eadb62d4817-pxl_20230510_201211144.jpg

Mon, May 8

KiCad tutorial learning PCB Design

https://scrapbook-into-the-redwoods.s3.amazonaws.com/1d790f10-bee0-46f8-a4cf-d3fbc51c0b7c-image.png

Sun, Apr 30

Blog Post time! karmanyaah.malhotra.cc/projects/2023/04/amplitie (scrapbook entries converted to a blog post)

https://scrapbook-into-the-redwoods.s3.amazonaws.com/e720944f-49ff-4570-bb06-e952a8cd0f15-image.png

Fri, Apr 28

Look Reese, train

https://scrapbook-into-the-redwoods.s3.amazonaws.com/8e76d443-f815-4c16-800d-32fd04d835e0-img_20230428_171903.jpg

Wed, Apr 26

Dallas #vrc day 2 vex robotics competition

https://scrapbook-into-the-redwoods.s3.amazonaws.com/07dc977e-bfc3-4f0e-8ff1-099882240d14-img_20230426_154304.jpg

Wed, Apr 26

Dallas #vrc Vex Robotics Competition

https://scrapbook-into-the-redwoods.s3.amazonaws.com/ab0ed388-9911-49c1-a597-fb0521f6943a-pxl_20230425_214735539.jpg

Tue, Apr 18

Edited 3 videos today and now I am the tech tips man. :youtube: www.youtube.com/@highriskhighrewardtech Also I need a better name.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/9550e3f0-9db2-4981-9d78-f4c9e1a24430-image.png

Sun, Apr 16

My NixOS PR finally got merged after only ... checks⌚... 2.5 months and 20 million revisions github.com/NixOS/nixpkgs/pull/213816

https://scrapbook-into-the-redwoods.s3.amazonaws.com/300e54f4-af1a-4531-a498-b16d39ea1d70-image.png

Sun, Apr 16

Mega UIL Score table version 2.0: I actually have 2023 data now, and sorting kinda works. Getting ready to publish the data collection Python script and rendering JS frontend soon. ipfs.karmanyaah.malhotra.cc/ipfs/QmP65VKrAwLakZZRiJ3861RZW2PvP7znrkCPkULaS2J1Rh

https://scrapbook-into-the-redwoods.s3.amazonaws.com/e52e1d01-6f08-411d-9e31-f4e783e11eeb-image.png

Wed, Apr 12

Restoring Mr Robot with Vex Cortex and ROBOTC milestone (with @Jaxzog)! The master brain is now talking to the follower and successfully sending values over UART!

Mon, Apr 10

Visiting UT Austin!

https://scrapbook-into-the-redwoods.s3.amazonaws.com/6d9d0eac-0af6-428c-b5b2-e7852aa88ed3-img_20230410_110240.jpg

Sat, Apr 8

I ~wasted~spent my whole day making a mega UIL result table. It's not very good, but using Python to scrape the website and Tabulate/JS (the bane of my existence) to table it, I'm making progress. It's also surprisingly fast at filtering, given it's all JS. ipfs.karmanyaah.malhotra.cc/ipfs/QmRhU23SFgfP4ku4c3X4BK2rKkkduNf7tmFmND24srstPb

https://scrapbook-into-the-redwoods.s3.amazonaws.com/253ca4fa-03e6-49f9-9674-36fd8e8ce038-image.png

Wed, Apr 5

Installing headers to adapt the ports to a vex cortex brain for Mr. Robot (a Lego technic based humanoid)

https://scrapbook-into-the-redwoods.s3.amazonaws.com/c4f87494-70cb-4c9e-86c4-6a0f69c46cb5-img_20230404_202651.jpg

Tue, Apr 4

Ampli-Tie final day 5, March 25th - the day has arrived! - Solder the microcontroller (I'm just powering it off the mCu USB port, past me calculated a peak of 100mA would be reasonable, future me found out the whole thing only consumes 26mA). - Copy a whole bunch of code off Adafruit, but the mic doesn't work, turns out, for some reason, my painted mic is broken and always outputs 3.6v. Hurriedly swapped to another mic, unpainted, so it would have to hide under the collar (T-2hrs). - Still cannot get the mic to work (T-90m). Might as well get static effects working. Got timing on rainbow cycling adjustable from the app, and made sure static color worked. - (T-60m) it works! Now I actually gotta tie the tie and dress up.

https://scrapbook-into-the-redwoods.s3.amazonaws.com/9c501f8b-787e-410f-8230-51dbd3e46bc4-pxl_20230326_224843115.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/649e01e7-1994-4211-96e4-958b30d39e9e-pxl_20230325_110934770.ls_exported_1798_1680577878424.jpg

Tue, Apr 4

Ampli-Tie backlog pt 2! Day 4, Friday, March 24th. Skipped school and the pressure was on, I have to get something working before tomorrow. I also have UIL this evening and tomorrow morning so just have ~9 to 4. - painted microphone - sewing, sewing, and sewing - I made the hard decision of splitting it into two halves, one above the name tag, and one below because connecting them was a nightmare. So, I used a wire to connect them (I got this really nice stranded 24AWG silicone wire that is extremely flexible and blends in perfectly). OTOH, connecting the two halves using an actual wire created a "highway" that reduced the resistance (conductive thread) from the microcontroller to any individual LED).

https://scrapbook-into-the-redwoods.s3.amazonaws.com/25247576-3420-466d-bf6e-37eb09c84155-pxl_20230404_030256962.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/fb4fe305-d12b-424b-8199-7ae62084b289-pxl_20230324_191405985.ls_exported_12496_1680577485801.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/bd9c9ea9-8538-4bb0-900e-9d5fc2e23edf-pxl_20230324_184220765.jpg

Tue, Apr 4

Ampli-Tie backlog! Day 3 (March 22) - sewing + acquired fray check to tie up loose ends Day 4 (March 23) - Hours and hours of sewing - After having to hold open these tight spaces gimme my surgery license already - first test, using alligator clips to connect the microcontroller and power 🎉

https://scrapbook-into-the-redwoods.s3.amazonaws.com/15dfc663-f988-4179-b592-1b32c4efb352-pxl_20230324_084854972.ls_exported_1965_1680576676792.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/fe38f293-aa61-4908-ad26-4008192ac960-pxl_20230324_053451518.jpg

Tue, Apr 4

I made a standalone PNG Polyglot generator today. A low dependency, low memory way to hide scripts in PNGs, because it's made to run in CircuitPython. gist.github.com/karmanyaahm/03025089054fa4568bc47eb14d1aff51 (offspring of winter hardware wonderland #hardware-party Project Oreo)

https://scrapbook-into-the-redwoods.s3.amazonaws.com/08ba3060-2f1b-41e5-bc96-e26be8f1bd44-image.png

Tue, Mar 21

Custom Ampli-Tie Day 2 - Step 2,3 1. Sizing and learning how to tie a tie 2. Placement tests (fewest lights that'll look decent) - 13 LEDs every 3 cm apart was optimal 3. Harvest Flora NeoPixels from an old non-functional project and then spend foreverrrrrr cleaning them (removing the superglued thread) 4. Ordered microphone and ribbon cable

https://scrapbook-into-the-redwoods.s3.amazonaws.com/866e3efa-a6e0-43f0-8067-1fd3f8905cb1-pxl_20230321_032850659.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/53e3177a-81c9-4d32-9997-b48bb373dac7-pxl_20230321_055900287.mp.jpg

Mon, Mar 20

Custom Ampli-Tie Day 1 - Step 1 Power consumption testing of 16 Neopixels (and the start of my real life engineering notebook, thanks #vrc :/)

https://scrapbook-into-the-redwoods.s3.amazonaws.com/4c277587-36a9-4efb-801a-5efe3131a1cd-img_20230319_211837.jpg

https://scrapbook-into-the-redwoods.s3.amazonaws.com/286cbc4f-ef35-4cd4-960f-af698afcfa7c-pxl_20230319_020122386.jpg

Sat, Mar 11

#frc today, big robotics week

https://cloud-l0dylag3g-hack-club-bot.vercel.app/0img_20230310_211021.jpg

Sun, Feb 26

My ntfy change got merged! docs.ntfy.sh/releases/?h=releases#ntfy-server-v210 github.com/binwiederhier/ntfy/pull/633/commits

https://cloud-bh60plnrx-hack-club-bot.vercel.app/0screenshot_20230226-034613.png

Sun, Feb 26

:winter-hardware-wonderland: #hardware-party Day 12 building a custom USB rubber ducky: Edited a (draft) image and presented on the :winter-hardware-wonderland: 🚢 :emergency-meeting:

https://cloud-4xyd7o00l-hack-club-bot.vercel.app/0oreo_in.png

Sun, Feb 26

:winter-hardware-wonderland: #hardware-party Day 12 building a custom USB rubber ducky: Edited a (draft) image and presented on the :winter-hardware-wonderland: 🚢 :emergency-meeting:

https://cloud-b22yb93vw-hack-club-bot.vercel.app/0pxl_20230224_215436580.jpg

Sat, Feb 25

:winter-hardware-wonderland: #hardware-party Day 11 building a custom USB rubber ducky: I shot the wallpaper image I will put on people's computers using my rubber ducky and assembled and soldered most of them. Huge thanks to @Jaxzog and my other friends who helped set up this set (it took like 4 hours) So close! I just need to finish my informational pamphlet, finalize the mac code, and edit the photo. (I'm in the epoch hoodie w/ the soldering iron (yes, that's a cage nut tool))

https://cloud-cev03jjwy-hack-club-bot.vercel.app/0image.png

https://cloud-i8twryazz-hack-club-bot.vercel.app/0image.png

Fri, Feb 24

:winter-hardware-wonderland: #hardware-party Day 10 building a custom USB rubber ducky: Finally, assembly and soldering 👏. The resin cases are nearly indistinguishable from molded plastic, I'm impressed. The good batches also fit like a(n expensive, high-quality) glove. We also set the set for the wallpaper photoshoot at school. Don't have a trench coat, but I'll do my best black hat imitation tomorrow. 🎩 Finalizing both tomorrow.

https://cloud-ptjwe89jr-hack-club-bot.vercel.app/0img_20230223_234151.jpg

https://cloud-5mc5ku8sw-hack-club-bot.vercel.app/0pxl_20230223_212709415.jpg

Thu, Feb 23

:winter-hardware-wonderland: #hardware-party Day 9 pt 2 (lost count) building a custom USB rubber ducky: I don't know how Hak5 does their thing, but I got the full fingerprint from Windows and frequency charted the bRequest values, and there aren't more than 2 Configuration params (8 and 9). Maybe I was looking at the wrong value, or parsing it wrong, but I'll just stick with my old working method.

https://cloud-mlloujztk-hack-club-bot.vercel.app/0image.png

Wed, Feb 22

:winter-hardware-wonderland: #hardware-party Day 9 building a custom USB rubber ducky: Trying longer fingerprints to copy HAK5's number of configuration descriptor-based detection, and I realized I'm dum dum The setup transaction wasn't just ~250 bytes, I was using a char-based counter, which must've been wrapping. Oh, C.

https://cloud-6t68mvbn3-hack-club-bot.vercel.app/0image.png

Wed, Feb 22

:winter-hardware-wonderland: #hardware-party Day 8 building a custom USB rubber ducky: Not much material progress today, but me and @Jaxzog brainstormed ideas for the image to set the wallpaper to. I also got started w/ an instruction manual/explanation for if someone overreacts to being pranked.

https://cloud-9wasq8bzo-hack-club-bot.vercel.app/0image.png

Tue, Feb 21

:winter-hardware-wonderland: #hardware-party Day 7 building a custom USB rubber ducky: @KaiZheng-U049N5Y0WM9 shipped my cases today ❤️!!! (Yes also the UPS people spelled my name wrong) I asked @reesericci for help testing the Mac version of my script at the Austin Central Library. They have computers that reset everything, including permissions, which helps test how the script will behave on new never-used-the-terimnal computers. Thanks reese! (Deleted and reposted for...reasons)

https://cloud-fy56cdzy4-hack-club-bot.vercel.app/0screenshot_20230221-115414.png

Mon, Feb 20

:winter-hardware-wonderland: #hardware-party Day 6 building a custom USB rubber ducky: @KaiZheng-U049N5Y0WM9 printed some cases today!!!

https://cloud-f0tm41ept-hack-club-bot.vercel.app/0image.png

https://cloud-kg2f9oh6y-hack-club-bot.vercel.app/0image.png

https://cloud-bde0tm3wo-hack-club-bot.vercel.app/0image.png

Sun, Feb 19

:winter-hardware-wonderland: #hardware-party Day 5 building a custom USB rubber ducky: Open Sourced all the code I worked on yesterday on GitHub: rubber_ducky, circuitpython, and tinyusb. Next step is to make it upstream-able. Also sped up the Windows Powershell payload with @Jaxzog, and made it hide in the background. If anyone has any ideas on how to make this shorter/faster, I'd love to hear it (powershell experts :pleading:)! github.com/karmanyaahm/rubber_ducky/issues/1#issuecomment-1435768480

https://cloud-8xg6xck3l-hack-club-bot.vercel.app/0image.png

Fri, Feb 17

Day 4 of Winter Hardware Wonderland :winter-hardware-wonderland: , #hardware-party building Project Oreo, a custom USB rubber ducky: Core software finally integrated!!!!! (unoptimized tho)

Fri, Feb 17

Day 4 of Winter Hardware Wonderland :winter-hardware-wonderland:, #hardware-party building Project Oreo, a custom USB rubber ducky: the 3d printed case prototype. Just need a couple of minor changes before finalization

https://cloud-rf85afw2l-hack-club-bot.vercel.app/0img_20230217_141239.jpg

Fri, Feb 17

Day 4 of Winter Hardware Wonderland :winter-hardware-wonderland: #hardware-party, building Project Oreo, a custom USB rubber ducky: I fixed the pointer const issue by literally just adding a (void*) and now I'm getting fingerprints!!!!! (I need to change uint16 to uint8 but I'm very excited) Woo!!!!!

https://cloud-lc38s3n0j-hack-club-bot.vercel.app/0image.png

Fri, Feb 17

Day 3 of Winter Hardware Wonderland :winter-hardware-wonderland:, building Project Oreo, a custom USB rubber ducky: I got some sick renders of the case (Inventor Ray Tracing). Hopefully the prototype print tomorrow is successful, then I can send it to @KaiZheng-U049N5Y0WM9 🤞 On the software side, I have the core code (capture the first 10 setup packets and make a python function to receive them). It just doesn't work 😦. TODO Debug

https://cloud-ods6sl1t5-hack-club-bot.vercel.app/0image.png

https://cloud-92wtp3uhj-hack-club-bot.vercel.app/0image.png

https://cloud-a6aomtv8b-hack-club-bot.vercel.app/0trinkeyfullassembly-rt2.png

https://cloud-1jiyx4nrw-hack-club-bot.vercel.app/0trinkeyfullassembly-rt1.png

Thu, Feb 16

Day 2 of Winter Wonderland #hardware-party :winter-hardware-wonderland:, building Project Oreo, a custom rubber ducky. On the software side, I got CircuitPython building in a Pure Nix Shell. Turns out, some Python libraries are built using flint instead of setup.py. Thankfully, there's a mode in Nix to handle that. I can now modify the code that ships with a UF2 by default, making deployment just a one-file-copy (very important when you have 20 of something). Next steps: Look at Micropython manifests to figure out how to include data/image files in the UF2. Track the received setup packets (host fingerprint), and make a function to transmit those to Python from C. On the Hardware side, my friend designed and 3d printed the first prototype of the case at school. It doesn't quite fit (see USB Port area), so needs a second prototype.

https://cloud-rabrci189-hack-club-bot.vercel.app/0image.png

https://cloud-97wljgqxe-hack-club-bot.vercel.app/0screenshot_20230215_225101.png

https://cloud-ra8coqo6c-hack-club-bot.vercel.app/0image.png

Wed, Feb 15

My school got 5 4331s and 10 9200L-24t-4G-Es from Cisco and I'm in charge of setting up the first one :partyparrot: with no Cisco experience whatsoever (except teacher's help who is CCNA)

https://cloud-39smpb0da-hack-club-bot.vercel.app/0image.png

Wed, Feb 15

Submitted a PR reworking ntfy's rate limiting github.com/binwiederhier/ntfy/pull/609. What's sleep when you can hack?

https://cloud-ojvkozosz-hack-club-bot.vercel.app/0image.png

Wed, Feb 15

Day 1 of Winter Hardware Wonderland :winter-hardware-wonderland: : 1. Collected even more USB Setup phase fingerprints with my old Digispark-based device. Now I just need two types of teachers' HP Laptops and M1 Macs. 2. Building Circuitpython is haaaaaaard. The crazy dependency management is the primary reason I hate embedded things. Maybe I should Nix this... 3. @KaiZheng-U049N5Y0WM9 agreed to 3d print my cases and ship them to me ❤️. I need to hurry up on finalizing the design so they get here on time. Making a better open-source USB Rubber Ducky with OS Detection www.youtube.com/watch?v=FbiJCnHBr70&list=PLxlDG2SH_6rvZrNAuVXI0BIdv7MWvkMNm

https://cloud-fd1c2bxfa-hack-club-bot.vercel.app/0image.png

https://cloud-aelx9k68u-hack-club-bot.vercel.app/0image.png

Mon, Feb 13

Got some fingerprinting going with digisparks. Now I need to find patterns, maybe build an auto-pattern finder idk. I modified the Digispark USB library for this: github.com/karmanyaahm/rubber_ducky/blob/a327a965d21e93979edef3e88a16825134a1b6fa/printUSB/usbdrv.c#L421-L462 And wrote some code to pretty print that data: github.com/karmanyaahm/rubber_ducky/blob/main/printUSB/printUSB.ino tags: winter hardware :winter-hardware-wonderland:, C++

https://cloud-4zgu2a8ca-hack-club-bot.vercel.app/0image.png

https://cloud-oab4yj1lf-hack-club-bot.vercel.app/0image.png

Thu, Feb 9

Did someone say push notifications in the FOSS F-Droid version of Nextcloud? Edit to clarify: nr23730@github.com has been working on a version of Nextcloud that supports UnifiedPush. Originally, we thought it would need a gateway (a server that converts between push formats) to function. However, reading through the Nextcloud code, I realized that they don't have any URL normalization, they just append "/notification" to the provided URL (caused the need for a gateway in the first place). So, I realized, we could just add a "#" to the end of our push URL, like ntfy.sh/upABCDEFGH?up=1#, then, Nextcloud will send notifications to ntfy.sh/upABCDEFGH?up=1#/notification, which is effectively our original URL! (Stuff after # is ignored). One of the most useful (benign) injection attacks I've ever come up with. Boom! No gateway Nextcloud UnifiedPush: github.com/nr23730/nextcloud-android/pull/1/files

https://cloud-c57ztoz2g-hack-club-bot.vercel.app/0screenshot_20230208-232728.png

Tue, Jan 31

My first contribution to NixOS!!! (for IPFS Kubo) github.com/NixOS/nixpkgs/pull/213816 (scrappy: nix)

https://cloud-qdmuoq5r6-hack-club-bot.vercel.app/0image.png

Tue, Jan 31

mmmm Nix. Moved my website to my new NixOS IPFS Caddy server running on Hetzner with vastly better reliability than my previous Ubuntu/Oracle Free tier server. github.com/karmanyaahm/nixos-ipfs-caddy-web-server Image pre-cache/post-cache

https://cloud-fy2jxxzxs-hack-club-bot.vercel.app/0image.png

Mon, Jan 30

SMH, why are there no papers about USB OS fingerprinting using control/setup requests like github.com/krakrukra/PocketAdmin/wiki/fingerprinter :abraham-thinkin: There are so many based on timing.

https://cloud-mdho7jp5c-hack-club-bot.vercel.app/0image.png

Thu, Jan 26

Ordered winter wonderland supplies! (and a little something for myself, donating money to bank) bank.hackclub.com/project-oreo

https://cloud-oj25qo170-hack-club-bot.vercel.app/0image.png

Thu, Jan 26

my USB Rubber Ducky scripts can block mouse movement with a repeated mouse.move(x=-100,y=-100)

https://cloud-r3mbjjkfo-hack-club-bot.vercel.app/0image.png

Wed, Jan 25

Some reading... (slack is being stupid and not showing my image for some reason)

https://cloud-48rnt22p1-hack-club-bot.vercel.app/0screenshot_20230125_092336.png

Fri, Jan 20

Migrated k.malhotra.cc, my URL shortener and Golang vanity URL thing, from a dedicated CGI python service to a Jekyll collection and some IPFS redirects under my main website, one less thing to build and deploy.

https://cloud-a5wa8fb0u-hack-club-bot.vercel.app/0screenshot_20230119_215255.png

Tue, Jan 17

The first draft of redoing rate limiting for UnifiedPush in ntfy. This makes rate limits for UP topics count toward the receiver (phone) rather than the sender (large application server sending to a lot of people). This will remove the need for rate limit exception lists managed by hand. github.com/binwiederhier/ntfy/pull/584

https://cloud-5mtlv4134-hack-club-bot.vercel.app/0image.png

Sat, Dec 31, 2022

:epoch-tx: Mac Version of USB Rubber Ducky background changer we made @ Epoch TX (and subsequently lost the USB :P) Code: github.com/karmanyaahm/rubber_ducky/blob/096cc5ca15d37e1913747e22ab636f7e53cee582/v2win/mac/mac.ino

https://cloud-yw2czcq0s-hack-club-bot.vercel.app/0img_20221230_133545.jpg