365 Sketches

In 2025 I drew daily on my iPad, often just quick measurements, but also doodles, inventions, diagrams, and math problems. Now that the year is over, I'm dumping them here. As crazy as some of these thigns are (Magic Hateball, The Hand of Truth, Boldspeech 2025), you can steal them. Consider this stuff public domain.

They are searchable or you can return to chriscoyne.com.

Three Hundred Sixty-Five Hand-Drawn Cubes Dec 31 One Mile Fingernail Dec 30 State Machine for Rationals Dec 29 NES controller for Lutron Dec 28 Understanding $x^2-y^2=1$ Dec 27 Sketch Site Dec 26 Billiard Croquet Dec 25 Ball Cradle Dec 24 Wood Stacking Dec 23 Rock Paper Scissors for 3 Dec 22 Convex from polar coordinates? Dec 21 Drone Distance Challenge Dec 20 Draft Angle Calculation Dec 19 Tetroban Dec 18 NBA 3-point arc proposal Dec 17 Flock Clock Dec 16 Prank Solenoid Dec 15 King of the Hill Infinite Slime Dec 14 Year of Sketches Ingestion Plan Dec 13 Branch-fill Dec 12 North-North Torus Arc Dec 11 XY Only Marble Run Gen Dec 10 Marble Run Path Gen Dec 09 Flash Box Dec 08 Fatwood Dentata Dec 07 Spyderco mount Dec 06 The Platonic Tray Dec 05 String Ball Bracket Dec 04 Obviously, You're Not a Golfer Dec 03 Ball Bowl Dec 02 Flex Mirror Dec 01 The Jahrstick Nov 30 Circuit diagram reminders Nov 29 3 Ball Switch? Nov 28 BATBOX Nov 27 Magnetic Ladder Nov 26 3 Squares & Triangles Nov 25 Tabletop Concrete Vibrator Nov 24 Elevator Relativity Nov 23 Clearance Cubes Nov 22 Spray Bot Nov 21 Crop Circle Laser Nov 20 VERTIMESH v4 Nov 19 Bi-directional mold fitter Nov 18 LLM SHA Checker Nov 17 Counter-coil motor Nov 16 Speed of a ball on rails Nov 15 Marble run cross section Nov 14 Procedural Marble Run Nov 13 Holy Triangulation Nov 12 Normal Elevations Nov 11 Shadow Dimensions Nov 10 Shotistics Nov 09 Vertimesh v2 Nov 08 Vertimesh Nov 07 No Phone Petition Nov 06 Mongoose Spray Nov 05 Tetrapod Nov 04 Magnet Question Nov 03 Twist Belt Nov 02 Center Bounce Nov 01 RAT SPOOL Oct 31 Mid Mesh Oct 30 RPM Chart Oct 29 Boolean plug depth calc Oct 28 Boolean Plug Handle Oct 27 Boolean plug considerations Oct 26 Grill Plugs Oct 25 Concave Triangulation Oct 24 Casting Mold Calculation Oct 23 Parallelogram Spring Oct 22 7-color doughnut Oct 21 Standing Waves Oct 20 Jack o Lantern Oct 19 Parametric Vase Curve Oct 18 Tip Adjust in ApplePay/Google Wallet Oct 17 Sonos Arc Stand Oct 16 Meta Mesh Oct 15 Trig Vase Oct 14 Vesta Time Oct 13 Cube folding geom Oct 12 Tire Stacker Work Table Oct 11 Stats for Elevation v. Time Oct 10 Kingslayer Oct 09 Disyou Dispenser Oct 08 Swiss Micros Holder Oct 07 Z-cash Q Oct 06 r = (A + B - c) / 2 Oct 05 Gear Design Test Oct 04 Data mgmt for erosion tracking Oct 03 Gear Print Oct 02 Juggle Boards Oct 01 Circles in a Square Sep 30 Lateral joinery construction Sep 29 Domino Tip Calculation Sep 28 Poker Chip Case Sep 27 Dewalt Air Duster Attachment Sep 26 Indoor Drone Photogrammetry Pattern Sep 25 Pascatz Triangle Sep 24 Solar hookup Sep 23 Bridge Challenge Sep 22 Puzzle Glass #1 Sep 21 Rain Chain Hook Sep 20 Cancer Early Detection Thoughts Sep 19 Robo-Torch Sep 18 Young Faithful Sep 17 Oh wow the date is 3²/4²/5² Sep 16 RE-RE-REBOUND Sep 15 METRONO-NO Sep 14 Porcupark Sep 13 Reverse Stratego Sep 12 Pennywier Sep 11 Disc Tag Sep 10 Gear and Loathing Sensor Sep 09 Cuckoo Clock Sep 08 Infected Hand Sep 07 Radius of Circle Touching Square Sep 06 Tennis on-screen stinks for new viewers Sep 05 3D Scan Half Shell Sep 04 Conway's Grid Sep 03 Vaginism Pod Sep 02 3D Scan Turntable Cube Sep 01 ALIEN WALL Aug 31 Serviced Dog Vest Aug 30 LED encoder knob Aug 29 Mow Plan Aug 28 The Hand of Truth Aug 27 Control Knobs for Clearpath Aug 26 Starlink Gator Roof Mount Aug 25 Sandpaper Tumbler Rotational Profile Aug 24 Turd-L Graphics Aug 23 Arm Wrestling Machine Aug 22 Circle Fit Question Aug 21 Mini Wall Ball 2 Aug 20 Mini Wall Ball Aug 19 Weight-Forward Tennis Buzzer Aug 18 Insane Graph Paper Aug 17 ESP32 Array Hookup Aug 16 Cylinder Snap Aug 15 Algo for surface of constant width Aug 14 BTF Lighting Bead Rail Aug 13 Marble Radness Aug 12 Escape Velocity Calculation Aug 11 College Prep Speaker Aug 10 Improved Blade Sketch Aug 09 Ball Field Code Editor Aug 08 Cheap Scrape Aug 07 Dumbler Aug 06 NOVA CLAMP Aug 05 Barn 240V Considerations Aug 04 Apple Watch Ski Face Aug 03 Parametric trig stacking question Aug 02 Workshop Layout Brainstorming Template Aug 01 Back plate for wood block Jul 31 Drill Press Routing Pattern Jul 30 Triangle Problem #2 Jul 29 Risk™ Electronic Armies Jul 28 Light Sliver Lens Jul 27 Zig Zag Index Calculation Jul 26 BTF Lighting Multi-Row Jul 25 Curved LED Strip Holder Jul 24 Wood FFT Enclosure Jul 23 BTF-Lighting Drill Rail Jul 22 Tourism Sign Extension Jul 21 Drone Tree Interference Jul 20 Cube Decomp Jul 19 Barn-ball sub button Jul 18 Mesh Building Blocks Jul 17 Context Sensitive Jul 16 Sphere Spiral Construction Jul 15 Tree Marker Jul 14 Tree Snap Joint Jul 13 Replacement stake for solar uplight Jul 12 Attempt #2 of "Peanut" Cross Section Jul 11 Tree Branch Manifold Jul 10 Vincent van GOBOT Jul 09 Brotato v. Scotch v. Time Jul 08 Kangaroo Race Jul 07 Yeti Lid Rod Jul 06 Ball Field Screensaver Jul 05 Green Dingus Jul 04 Robot Paint Tray Jul 03 B.B.C. Jul 02 Erosion Explorer Jul 01 Hexagon Jigsaw Exploration Jun 30 Conway's Conn Ways v2 Jun 29 Motor + motor connection Jun 28 Scooter Winch Jun 27 Precision Clock MK4 Wall Clips Jun 26 Bike Jump Calculation Jun 25 18° Puzzle Jun 24 Ball Block Wall Clock Jun 23 Conway’s Conn Ways Jun 22 Calf Raise Chart Jun 21 General Grid Template Jun 20 PWC RAMP Jun 19 The Kilopixel Sound Analyzer Jun 18 Drone Lure Jun 17 E-scooter parking ramp Jun 16 Radio Interface Jun 15 The Neverending Rim Job Jun 14 Flick War Jun 13 Mechanized Contraption Level Jun 12 Mechanized Contraption Jun 11 Rawk Lobster Jun 10 Embedded Octahedron Jun 09 Previously Submerged Eye-Bolt Boulder Jun 08 The Atomic Scale Jun 07 3-color physical segment display Jun 06 PRIMEPACK v2 interface Jun 05 Magic Hateball Jun 04 Prize Wheel Placard Jun 03 Detachable Underwater Prop + Motor Jun 02 Who’s Playing? Jun 01 V1 Wireless Buddy May 31 The Fruit of Knowledge May 30 T-Intersection Board Stabilizer May 29 Percent of Yogon May 28 4-triangle bike jump May 27 Basketball Bracket Brainstorming May 26 Nodewar collision May 25 Poop Diddy May 24 PHYSgram May 23 Area of a square inside a regular octagon May 22 Epoxy pour 1" countertop May 21 Color React May 20 Metal Detekta May 19 SUR-ROD May 18 Kapex Table v2 May 17 Kapex Laser Block May 16 The Frisbox May 15 RC Tag May 14 Bait Chunx Disposable Trap May 13 Calculation for a graduated bowl May 12 BLAZEPOD 9-FOOTER May 11 The Hunt for Planet 9 May 10 Meshtastic Drone Swarm May 09 Garage door rewiring May 08 PACKETS, YO! May 07 Zing Zong with a Zany Zone (a.k.a. Z⁴) May 06 Burning Wakeup May 05 Pantry Label May 04 Paint Storage May 03 PONG 4 May 02 Island Shack Food System May 01 Chat GPT Darwin Apr 30 Slashbuckler Apr 29 UNAS PRO PLAN Apr 28 More placard Apr 27 BARN GLASS #1 Apr 26 BB Gun Target Stand Apr 25 Barn Mezzanine Apr 24 E-ink Cribbage Board Apr 23 Cribbage Scoring App Apr 22 Bedside Quicklamp Apr 21 Nozzle Gozzle Apr 20 2-color print test Apr 19 The Bin Pin Apr 18 Cross section of porcupine Apr 17 Circles-in-circle mesh Apr 16 Mobile Component Apr 15 RC Barn Track Apr 14 Hollow Epoxy Ball Apr 13 ClearPath Coupler Apr 12 Wicked Witch Apr 11 Magnet Holder Apr 10 Meshtastic Dropkit Apr 09 Zing Zong Apr 08 Ribbon N-Helix Apr 07 Streak Machine Apr 06 Hook Apr 05 Chainsaw + polesaw oil dish Apr 04 String + Gravity Linear Actuator Apr 03 In the event of my death v2. Apr 02 A picture that flips when you walk by Apr 01 Clearcore–ESP32 Comms Mar 31 3-D PRINTED “PAPER AIRPLANE” Mar 30 Quick release N-motor drumkit hub Mar 29 Movement Die for Sailing Game Mar 28 Cameron Rose Coyne, and back again Mar 27 Cube Sculpture Mar 26 0.5" shaft & spool for clear path Mar 25 N-motor drumkit Mar 24 Thoughts on primepack Mar 23 More placards Mar 22 Shadow Cylinder Mar 21 Venn Reunion Mar 20 Newton's Ramp Mar 19 ONE-ARM CLOCK Mar 18 Stair shelves for living room Mar 17 Quick print sunglass hook for Hyundai board Mar 16 ESP32 WROOM → STEP & DIRECTION wiring Mar 15 Magnet + time-of-flight assembly Mar 14 Another placard Mar 13 Initial placard thoughts Mar 12 Eastboundwardho! Mar 11 Motor-driven Height Maintainer Mar 10 4 Screw Bracket Mar 09 Non-circular gear question Mar 08 PrimePack Mar 07 Perpetual Motion Mar 06 Platform Support Mar 05 Magnetic epoxy sculpture Mar 04 Load Cell Support Mar 03 Jumble Mar 02 248 Mar 01 Garage Wall Organizer Feb 28 Time Conveyor Feb 27 Newton's Electric Cradle Feb 26 Bone Cube Feb 25 Basketball Prize Wheel Template Feb 24 Outlet passer Feb 23 Modular Beatmaker Feb 22 Binary Magneticlock Feb 21 Death Box Feb 20 Auto Dog Cam Feb 19 Brown Noise Machine Feb 18 Track Monster Feb 17 Electrocanvas Feb 16 Joinery Exploration Feb 15 Primordial cells Feb 14 Drum Kit Steering Wheel Feb 13 Smart Weighted Vest Feb 12 3D Tree Feb 11 THIS SIDE UP Feb 10 React Board Feb 09 Conway’s Infinite Life Feb 08 Helium Balloon Airtag Mission Feb 07 Drummin' Fingers Feb 06 Battleshirts Feb 05 Perpetual Motion Ramp #3 Feb 04 ESP32 12V Layout Feb 03 Jumpzilla Feb 02 Basketball Prize Wheel Feb 01 Single Note Jan 31 Music Matrix Jan 30 BoldSpeech 2025 Jan 29 Ski Proximity Sensors Jan 28 Ultimate Deathbee Jan 27 Programmable mites Jan 26 Construction Toolkit Brainstorm Jan 25 Perpetual Motion Ramp #2 Jan 24 Barn Ball Board Jan 23 Check Me Out I'm Weird Jan 22 Halfcourt Blitz Jan 21 Triple Magnetic Pendulum Jan 20 Heart of Stone Jan 19 Modular Marble Run Jan 18 Shed on Wheels Jan 17 High Seas Survivor Jan 16 Ball-tag vests Jan 15 BJ Buddy Jan 14 Interface for distributed web primordial life Jan 13 Whack-a-ball Jan 12 Perpetual Motion Ramp #1 Jan 11 Primordial Chess Life Jan 10 Crowd Killer Truck Jan 09 Barn-ball rules Jan 08 Haircut Robot Jan 07 Balance Buddy Jan 06 The Dog-Damn Bowl Jan 05 Queen of AI Jan 04 The Interruptor Shirt Jan 03 Dodge Ram Headrest Bracket Jan 02 AI Training Coach Jan 01