Retired Digital Alchemist. Cyber Monk. Technologist. Containment Specialist at -redacted-. Sun Microsystems Labs Alumni. Former SFX specialist at Blue Man Group. Hobbies: Game Design in Java/JavaFX, Analog Synth, PCB design, Robots, Gardening, Cooking.https://bsky.app/profile/markjkoch.bsky.socialhttps://bsky.app/profile/markjkoch.bsky.social/post/3mqa5pq74zs2oI love you Blink AI.09 Jul 2026 17:26 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3mqa5pq74zs2ohttps://bsky.app/profile/markjkoch.bsky.social/post/3mmq77xzcf22fA couple months ago I discovered a quaint anime called One Piece and I can stop watching any time I want. #onepiece #anime #bingewatching #netflix26 May 2026 04:54 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3mmq77xzcf22fhttps://bsky.app/profile/markjkoch.bsky.social/post/3mmccfbbx3c2dMost of the SPAM mail I receive dropped to zero when the #Iran war started (and anytime the US has had a conflict with someone). Today it all shot back up on many accounts I manage. It makes me hopeful that an agreement has been reached.20 May 2026 16:14 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3mmccfbbx3c2dhttps://bsky.app/profile/markjkoch.bsky.social/post/3mkdkycuwcs2gPurrfect fit! #caturday25 Apr 2026 17:30 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3mkdkycuwcs2ghttps://bsky.app/profile/markjkoch.bsky.social/post/3mgsmkvpapk2jMy well practiced percussive desoldering technique has fractured the LCD screen. Thankful for next day Amazon delivery. Lesson learned. #soldering #electronics11 Mar 2026 19:27 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3mgsmkvpapk2jhttps://bsky.app/profile/markjkoch.bsky.social/post/3md5evj5yrc2zI've made a lot of progress on my #neuromancerpc restoration and it's largely playable (let's call it alpha), but I'm not done reverse engineering the original game's data files... #neuromancer #java #javafx #retrogaming #gamedev24 Jan 2026 04:29 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3md5evj5yrc2zhttps://bsky.app/profile/markjkoch.bsky.social/post/3m6uv6tgit22eHere's a video tour of my Rack Synth progress. Pretty much working and making noises. Lot's of tuning to do but it works!!! Will spend the next two months documenting on GIThub. #asmr-synth #electronics #synth #eurorack30 Nov 2025 21:45 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3m6uv6tgit22ehttps://bsky.app/profile/markjkoch.bsky.social/post/3m6pihouepk2eNow that my multi-day cooking adventure is done, soldering up the fourth #PCB in my modular #synth project. Hope to have a working sound machine in a couple more days. #asmr-synth #soldering #electronics28 Nov 2025 18:14 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3m6pihouepk2ehttps://bsky.app/profile/markjkoch.bsky.social/post/3m5yyiqgmxk2yMy end of the year goal is to make this pile of circuits into a working analog #synth. Then, and only then, am I allowed to go back to #gamedev on my #javafx #neuromancer PC remake while sipping egg nog. Too many hobbies.19 Nov 2025 19:30 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3m5yyiqgmxk2yhttps://bsky.app/profile/markjkoch.bsky.social/post/3m5wqaqlups27One of my for-fun #gamedev projects involves restoring an old PC game called #neuromancer which is based loosely on the book by William Gibson. One of the folks who worked on the original is Rebecca Heineman @burgerbecky.bsky.social , who passed away this week. RIP Rebecca. You are not forgotten.18 Nov 2025 21:57 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3m5wqaqlups27https://bsky.app/profile/markjkoch.bsky.social/post/3m2dg4cg6h22gA nice way to end the week! Got my #synth module working. Based on an open source design by Hagiwo. #RasPi #Pico2 based and using Arduino libraries, generates waves from tables or math. I added OLED and UI code. I think the PCB components need work as the output looks a little funky. #asmr-synth04 Oct 2025 01:20 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3m2dg4cg6h22ghttps://bsky.app/profile/markjkoch.bsky.social/post/3lztz36vmkk2d#synth rack progress! One regulator wouldn't start up, so it took a deeper read into the data sheet to realize I'd missed some components needed for voltages above 5V (a zener and cap). #Zener ended up being a stack of Zeners to achieve desired value. Not my prettiest fix. #pcb #kicad #electronics27 Sep 2025 22:16 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lztz36vmkk2dhttps://bsky.app/profile/markjkoch.bsky.social/post/3lzkhdjyshk2jI don’t have a #Mouser parts purchasing problem! I can stop any time I want. #kicad #pcb #engineering24 Sep 2025 03:05 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lzkhdjyshk2jhttps://bsky.app/profile/markjkoch.bsky.social/post/3lzc4bxyem227Upon finding this stainless steel bowl at #ikea that looks suspiciously like a half scale #R2D2 head…. Challenge accepted!20 Sep 2025 19:26 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lzc4bxyem227https://bsky.app/profile/markjkoch.bsky.social/post/3lyy4wkpapc2tMy #JLCPCB bounty included my prototype #PCB s for a new type of rack #synth that I am thinking about. Think #eurorack but dragged into the new millennium. Backplane has two #I2C busses, slot detection, and 32 negotiated patch signals. Slightly larger such that old ER modules can nest inside.16 Sep 2025 20:11 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lyy4wkpapc2thttps://bsky.app/profile/markjkoch.bsky.social/post/3lyy3so6lqk2tYay! The main #PCB for my MOS #KIM-1 replica arrived today from #JLCPCB! The sub-boards seem to fit. Bringup will take awhile since there's a gross chip-pin-numbering error on one of the smaller boards and I'll have to re-fab it. But I'll be able to partially assemble it and test a few things.16 Sep 2025 19:51 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lyy3so6lqk2thttps://bsky.app/profile/markjkoch.bsky.social/post/3lycf2djb4c2tWhen your latest #PCB uses a #PCI connector (super dirt cheap) and you want the customer to know that they should not even be tempted to plug it into a PC. I used the connector but the pinout and voltages are nowhere near those of PC Cards. At least the warning will be entertaining. #KiCAD08 Sep 2025 04:38 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lycf2djb4c2thttps://bsky.app/profile/markjkoch.bsky.social/post/3lxihwnja722aIt's alive! Keypad/Display #PCB module for my #kim-1 replica is working! Mostly based on the original 1970s #schematic, using modern parts. I wrote a PCB test fixture using Arduino and #rp2040 #raspberrypipico module from #adafruit. My first time using a rp2040 was mostly painless. #65C0228 Aug 2025 21:20 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lxihwnja722ahttps://bsky.app/profile/markjkoch.bsky.social/post/3lxb6xvv4z22aTracking the person delivering my #UPS package. This individual should get a job in professional gerrymandering. Has driven past my neighborhood twice already and returned to multiple places they were before. Package is also an hour after the original delivery window. This is performance art.25 Aug 2025 23:51 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lxb6xvv4z22ahttps://bsky.app/profile/markjkoch.bsky.social/post/3lx4d3qp6bs2jWhen a billionaire/celebrity/philanthropist looks at your profile on LinkedIn and you’re not sure if you should be elated or worried.24 Aug 2025 01:21 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lx4d3qp6bs2jhttps://bsky.app/profile/markjkoch.bsky.social/post/3lwozyyeehs27My #analytical brain, every time I touch something and get a #shock: "I've been sitting still for five minutes! Why am I loosing so many #electrons so quickly? Is there something I can do about it?" #zap18 Aug 2025 18:34 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lwozyyeehs27https://bsky.app/profile/markjkoch.bsky.social/post/3lwknira33222That #feeling you have when you do a #GIT commit before going to help a family member with something for almost six hours. My day is gone but ideas in my head are check-pointed. #codelife17 Aug 2025 00:40 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lwknira33222https://bsky.app/profile/markjkoch.bsky.social/post/3lwha7w67dc22This is a public service announcement for you to support your local PBS station! #PBS #RickSteves15 Aug 2025 16:04 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lwha7w67dc22https://bsky.app/profile/markjkoch.bsky.social/post/3lvyor2mjo22bMy @oshpark.bsky.social PCBs arrived. They are part of my #kicad project to create a #KIM-1 #65c02 computer replica, with a twist. I started with the original schematic but broke it into SMT modules. Each module is a castellated #PCB "stamp" for a larger main board that I'm finishing up.09 Aug 2025 21:14 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3lvyor2mjo22bhttps://bsky.app/profile/markjkoch.bsky.social/post/3luleljka6k26If they ever reboot "Back to the Future", they should use the #CyberTruck. Except, on this new set of movies, to activate time travel, you'd have to rear-end the CyberTruck using a different vehicle at 88MPH. It would help add one more metaphor to the "Back" part of the name in the title.22 Jul 2025 20:42 +0000at://did:plc:vedokzosvok5hbuf7j5cflbk/app.bsky.feed.post/3luleljka6k26