cad-agent.References · Mechanisms in the catalogue · Markdown · JSON
References · Mechanical design
Mechanisms
129 records: 3 read sources that cad-agent's rules and checks may cite, and 126 records catalogued from the Reference Map, not yet read. Joints, linkages, motor mounts and the motion between parts.
Catalogued records are search snippets: their numbers are the authors' claims and their licences are as the map states them, unread. Cite one only after reading the source and promoting it (how).
Coverage
What cad-agent checked for these topics when the map was made, and the gap it found. The issue it drafted for each gap was never posted.
MissingISO 286 fits (H7/g6) and bearing seats
Gap: ISO 286 IT grades and hole/shaft deviations, preferred fits (H7/g6, H7/p6), bearing shaft/housing fits, machined-fit clearance windows absent.
Drafted issue, never posted: “Add ISO 286 fit calculator and bearing seat fits”
Records
129 records
| Record | Kind | Evidence | Confidence | Licence | Process | Role |
|---|---|---|---|---|---|---|
| Approximate Synthesis of Four-Bar LinkagesTransactions of the ASME 77 (6) · 1955 Read: 2026-11-01: the DOI, title, author, volume and pages checked against Crossref: the paper is pp. 853-859, and the published discussion and closure that follow it run to p. 861 (cadagent.formulas cites 853-861). | Read source | read | unknown | not recorded | none stated | not assessed |
| Design of Machinery: An Introduction to the Synthesis and Analysis of Mechanisms and Machines, 5th edition ISBN 978-0-07-352935-6McGraw-Hill · 2012 Read: 2026-11-01: the 5th edition's hardcover ISBN checked against library records (McGraw-Hill, copyright 2012; the edition with the student DVD is ISBN 978-0-07-742171-7). cadagent.formulas.linkages cites the sections. | Read source | read | unknown | not recorded | none stated | not assessed |
| Singularity analysis of closed-loop kinematic chainsIEEE Transactions on Robotics and Automation 6 (3) · 1990 Read: 2026-11-01: the DOI, title, authors and year checked against Crossref. | Read source | read | unknown | not recorded | none stated | not assessed |
| 3d-parametric-whoopvsergeev OpenSCAD source for a parametric whoop frame. Drone-specific; strong impacts may break motor struts, per the author. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Lessons |
| 3D-Printed-AI-Nerf-Sentry-TurretKevyVo Printed chassis, OpenCV tracking, stepper pan/tilt. Guide and code promised later; README has photos and two notes only. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| actonatorJeyRunner 3D printable robot actuator with belt-driven gearbox and custom FOC driver board. No torque or efficiency measurements; only an animated video of movement. | Open project | snippet only | low 0.4 | openMITnot read | 3D printingPCB and electronics | Lessons |
| Af-SliderAf-Slider Motorised slider; non-commercial licence. CC BY-NC-SA licence and design-right claim restrict reuse; no performance data. | Open project | snippet only | low 0.4 | non-commercialnot read | 3D printing | Context |
| alpacadipree Lightweight carbon cinematic FPV frame. Weight and specs are stated, no flight evidence; drone-specific. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | LGPL-3.0not read | 3D printingSheet metal and laserCNC machining | Context |
| ArduPilot Pan 360 and Tilt trackerdiscuss.ardupilot.org 360 degree pan, geared tilt, PETG. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| ArduPilot vibration dampingardupilot.org Too much damping is as bad as too little; arm flex is a main cause. | Guide | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| autocoilpwspen Generates PCB stators; several features unchecked. README is a TODO list with several unchecked items; no motor built. | Open project | snippet only | low 0.4 | licence unclearnot read | PCB and electronics | Context |
| Autonomous-Nerf-Turretanjrew Autonomous turret, active in October 2026; likely software-heavy. Software-focused; build and mechanical details are absent from the README. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printing | Lessons |
| Berkeley Humanoid Lite assetsHybridRobotics Printed cycloidal actuator assets. Asset and export repo only; no actuator build or performance data in this README. | Open project | snippet only | low 0.4 | CC-BY-SA-4.0not read | 3D printing | Lessons |
| bitcraze-mechanics (Crazyflie)bitcraze PCB-as-frame nano quad. The repo README is two lines; the detach-on-impact guard design comes from Bitcraze web posts. README is two lines; the detach-on-impact claim is not in it. | Open project | snippet only | low 0.4 | licence unclearnot read | PCB and electronics | Context |
| Bitcraze: Crazyflie prop guardsbitcraze.io Guards and legs break away on impact to protect the arms. | Article or blog post | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Bluetooth_Nerf_turretLittleFrenchKev README is a face-tracking camera app. README contradicts the summary: it is a pyserial/PyQt5 face-tracking app with no hardware detail. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | Context |
| BORGI hub motoroccupycars Axial-flux hub motor with printed stator. Ran unloaded at 20 kW; no loaded data. Only no-load run at 20 kW; build instructions and BOM say coming soon. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingCNC machiningMotor winding | Context |
| BOSL2BelfrySCAD OpenSCAD library: gears, bearing pockets, joiners, threads, hinges. Self-declared beta, API reorganised, and OpenSCAD not CadQuery. | Open project | snippet only | low 0.4 | openBSD-2-Clausenot read | none stated | Lessons |
| cdfocdukelec RS-485 FOC board. Board specs (current, voltage) are not stated in the README text read. | Open project | snippet only | low 0.4 | openMITnot read | 3D printing | Context |
| Chimera-MK7NortheastDesigns Reverse-breech spring blaster. No README saved; nothing verified. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | Context |
| CRSF-Trackeren4343 Servo tracker code; models are on MakerWorld. Servo-based antenna tracker; no photos or test data shown, and it is an ESP32 firmware project. | Open project | snippet only | low 0.4 | GPL-3.0not read | 3D printingMoulding and casting | Context |
| CygnusX1 TVC rocketAdamMarciniak README describes a flight-computer PCB; the thrust-vector mount is not documented there. Flight computer PCB, not a gimbal mount as the summary says; one flight ended in catastrophic disassembly. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | PCB and electronics | Context |
| Dart-TurretTops76 Hardware and BOM project with a 140 km/h speed claim. Speed claim has no test method; "WIP" printable files and little build detail. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printing | Reference |
| Digital Bird pan/tilt headprintables.com Belt-driven PTZ head: 360 degree pan, 130 degree tilt, 3.5 kg tilt payload. Snippet only. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | none stated | not assessed |
| DolphinSHdiaxxu Printed VTOL with FPV. Numbers are estimates; no flight evidence in README. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Context |
| Double-flywheel launcher (arXiv 2105.12833)arxiv.org 4 and 2.75 inch wheels, compression, screw-driven hood. | Paper or thesis | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Drone (1300 mm hexacopter)timarcher Step-by-step documented large hexacopter build. Carbon frame and 12s parts; cost is only implied. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | Context |
| Ducted-fan thrust-vectoring droneprintables.com 90 mm EDF with four servo jet vanes on PX4. Snippet only. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| DuctedFanUAV-Autopilotmengchaoheng README is generic PX4 text with no ducted-fan content. README is the generic PX4 text and does not mention ducted fans. | Open project | snippet only | low 0.4 | openBSD-3-Clausenot read | none stated | Context |
| DUFDLwillumpie82 Foam dart launcher (2017). README is a name and credits only; no build or test evidence. | Open project | snippet only | low 0.4 | openMITnot read | none stated | Context |
| dummy2 armlixinswitchpi 6-DOF arm with its own BLDC actuator and Ethernet-CAN bridge. Repeat accuracy 0.01 to 0.05 mm claimed without method; videos only. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | none stated | Lessons |
| eaglepower-statoraotenjo-xyz Rewind of a drone motor into a gimbal-style motor. Smooth wire contact surfaces matter. Sponsor-driven write-up on a drone-motor rewind; no motor test results shown. | Open project | snippet only | low 0.4 | openMITnot read | 3D printingCNC machiningPCB and electronicsMotor winding | Lessons |
| Eclick panorama headphotorumors.com Printed head with embedded rods; 3 kg load claimed. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | none stated | not assessed |
| eXploraVTOLrobustini Tailsitter VTOL on ArduPilot. The README says docs and specs are lacking. README says documentation and specs are still lacking; BOM provisional. | Open project | snippet only | low 0.4 | GPL-3.0not read | 3D printing | Context |
| EzActuatorMackaJunest 24:1 cycloidal with SimpleFOC. README admits problems. README says under development and may have problems; no data. | Open project | snippet only | low 0.4 | GPL-3.0not read | none stated | Context |
| FIRST launchers and placers guidefirstinspires.org Hood wrap against trajectory. | Guide | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| flexuresartofscience FEA to print workflow for flexures. README is one line; no evidence either way. | Open project | snippet only | low 0.4 | GPL-3.0not read | 3D printing | Context |
| FRC 1690 Orbit 2026 CADchiefdelphi.com Onshape robot CAD with a ball shooter. Document not opened. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| FRC 2813 Gear Heads 2026 CADchiefdelphi.com Onshape CAD. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| FRC 359 2026 CAD and Q&Achiefdelphi.com Notes a move from 4 inch to 3 inch shooter wheels. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| FRC 3928 Neutrino 2026 CADchiefdelphi.com Onshape CAD. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| FRC 581 2026 CAD and codechiefdelphi.com Shooter and spindexer prototypes. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Gecko blaster instructionsEhdrien Print and assembly guide. No README saved, so every field here comes from the note alone. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| Gershenforcer (MIT HTMAA)fab.cba.mit.edu Student build log: flywheel blaster turret from scratch. Snippet only. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| gokhas_projectcyhunblr GokHAS was developed as a bachelor’s thesis project. It integrates a custom two-axis turret with an Airsoft system. A GUI-based README covers the software stack only; no mechanical design, photos or test results. | Open project | snippet only | low 0.4 | openMITnot read | none stated | Context |
| greasegooseGalaxyCr8r Full-auto flywheel blaster. Beta, as-is with no warranty; the manual is a work in progress. | Open project | snippet only | low 0.4 | licence unclearnot read | Inserts and fasteners | Context |
| Ground station for satellite trackingDaveXNN STL seen. Two NEMA23, spur gears, Pi 4, full rotator. Test section is thin: the README shows SDR screenshots but no stated accuracy numbers. | Open project | snippet only | low 0.4 | openMITnot read | 3D printingCNC machining | Reference |
| Hand-wound QDD (JeongSeoJin)JeongSeoJin Hand-wound 8110-size motor with a 10:1 cycloidal and moteus. 8.8 N·m claimed. Author lists misaligned shaft, no back-iron, low copper fill. Author says the prototype is unsuitable for dynamic robots; torque test used a load cell. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingCNC machiningMotor winding | Lessons |
| Integrated-Joint-Actuatortimxuti A 3D Printed BLDC QDD actuator with an internal cycloidal gearbox and an integrated motor controller Performance claimed only as 'significantly improved'; no torque numbers; designed in SolidWorks. | Open project | snippet only | low 0.4 | openMITnot read | 3D printingSheet metal and laserMotor winding | Lessons |
| IntoFPV: printed arm stiffness threadintofpv.com One report: printed arm about 85% as stiff as 6 mm carbon. | Forum thread | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | none stated | not assessed |
| IoBlasterjhalek90 Printable Rival blaster. Rate is a claim backed only by a firing video link; no speed data. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printing | Lessons |
| Ironless-QDD-ActuatorCKraft11 Low-Cost Ironless Rotor QDD 3D Printed Actuator Torque is a holding-torque claim; test method lives in an external blog. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingCNC machining | Reference |
| JeNo-5.1 frame familyWE-are-FPV Printed freestyle frames from 3 to 7 inch, for the DJI O3 unit. Frame is carbon cut, not printed; drone-specific. | Open project | snippet only | low 0.4 | openCC-BY-4.0not read | 3D printingSheet metal and laserCNC machining | Lessons |
| JeNo-PocketWE-are-FPV 2.5 inch printed frame. Drone frame. | Open project | snippet only | low 0.4 | openCC-BY-4.0not read | 3D printingSheet metal and laserCNC machiningMotor winding | Context |
| Katz thesis: low-cost modular actuatordspace.mit.edu Mini Cheetah actuator rationale. Handle and the 17 N·m figure not confirmed. | Paper or thesis | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| KellyIndustriesahalekelly Printed Nerf blaster designs. README is a single sentence; no evidence of build or performance. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| Kenobi-S1 harmonic mountLaplase555 SolidWorks files seen. Printed mount around bought harmonic reducers. README is a recommendation list and one image; no evidence it was built or works. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| Legacy-V0.1-style-tensionersteookie Printed belt tensioner. Photos only; no tension data or test. | Open project | snippet only | low 0.4 | GPL-3.0not read | 3D printing | Context |
| magnetless_motorgouldpa00 PCB wave-winding stator; Inventor and Altium files. Build notes only; no test results. | Open project | snippet only | low 0.4 | GPL-3.0not read | PCB and electronicsMotor winding | Context |
| MakerWorld 3-axis PTZ mountmakerworld.com NEMA17 PTZ with a roll axis. Snippet only. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| MBHS flywheel calculations whitepaperrobot.mbhs.edu Double-flywheel momentum model; assumes no slip. | Paper or thesis | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| mc-psu-v3bgkatz mini cheetah power supply design files README missing; listed with drivers but does not fit that category; only the summary describes it. | Open project | snippet only | low 0.4 | openMITnot read | none stated | Context |
| Meaker Mk 42 medium machine blasterprintables.com Printables model. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Medusa turntable (Audiomatica)audiomatica.com NEMA17 on a commercial swivel plate. | Open project | snippet only | low 0.4 | not read | none stated | not assessed |
| MegaLongRangeeksperts 7 inch frame with printed accessories. Drone frame; carbon plates are the main structure, prints are accessories only. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Context |
| MFPVmikeymascatu Modular printed delivery-drone frame. The README says the design is deprecated as unflyable. Deprecated by its own author after flight testing. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Lessons |
| MiniHawk-VTOLStephenCarlson Printed hybrid VTOL. Author notes pre-hotfix v2.0 STLs had design flaws; docs mid-rewrite. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingInserts and fastenersMotor winding | Lessons |
| moteusmjbots FOC driver hardware and firmware; ratings only, no test data. Ratings table only; the README shows no test data or method. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openApache-2.0not read | PCB and electronics | Leader |
| NERF Minigun turret for a printed RC tankhowtomechatronics.com Turret build write-up. Snippet only. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Nerf Rival Assistmyminifactory.com Rival ball launcher with an IR remote. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| nerf-iron-domebrianlevis Automatic sentry gun. No performance numbers; hardware section is brief with no BOM. | Open project | snippet only | low 0.4 | openUnlicensenot read | none stated | Context |
| NSP-1k build guidescribd.com Heat-set inserts, flywheel cage, matched wheel heights. | Guide | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| ODRI actuator hardwareopen-dynamic-robot-initiative 9:1 belt module for Solo and Bolt with assembly, calibration and known-issues guides. The README has no torque numbers; 2.5 to 2.7 N·m is from the paper via a search snippet. Belt module; README itself gives no torque numbers. | Open project | snippet only | low 0.4 | openBSD-3-Clausenot read | 3D printingCNC machining | Leader |
| ODrive firmwareodriverobotics v3.x firmware, no longer developed. Only v3.x (not recommended for new designs); current firmware is closed source. | Open project | snippet only | low 0.4 | openMITnot read | none stated | Reference |
| ODriveHardwareodriverobotics v3.1 errata (slow current-amp filter) is a worked example of a real design error. Archived 2022 board; errata is stated without a measurement method. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openMITnot read | none stated | Lessons |
| open-motor-driver-initiative (uOmodri)open-dynamic-robot-initiative FOC driver boards. README says off-the-shelf drivers are cheaper unless you need the bandwidth. Many sections are 'to do'; the README says to replicate only for specific needs. | Open project | snippet only | low 0.4 | openBSD-3-Clausenot read | none stated | Context |
| OpenAstroTrackerOpenAstroTech Printed belt-reduction astro mount with a large community and wiki. Licence file exists, type not read. README is a link hub; specs and licence type are not in it. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Leader |
| OpenATSOpenATS Tracker controller software. README is mostly Chinese prose on software architecture, little mechanical or test evidence. | Open project | snippet only | low 0.4 | GPL-3.0not read | none stated | Context |
| OpenDroneljbotero Printed quad frame from 2016. Check dimensions before trusting. Dated 2016 and sparse; no flight evidence in README; parts list lives in wiki. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| OpenGimbal (Crazyflie)tristandijkstra Test gimbal for a tiny flyer; relevant to stabilised rigs. Test stand for a nano drone, not a robot; small bearing sizes only fit its scale. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Lessons |
| OpenGimbal (MStefan99)MStefan99 Brushless gimbal. The README says the hardware is unpublished and untested. README says hardware designs are still being tested and unpublished; figures are unmeasured claims. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingPCB and electronics | Context |
| OpenQDD-V1aaedmusa Printed planetary QDD. STEP and STL zips, BOM. 16 N·m is a rated figure from press. README has no data; torque figure comes from press, not a test. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printing | Reference |
| OpenSliderAdamslab Printed 3-axis slider on printer electronics. Build tutorial is marked work in progress; no payload or accuracy figures. | Open project | snippet only | low 0.4 | GPL-3.0not read | 3D printing | Lessons |
| OpenTorque ActuatorG-Levine 8:1 QDD with STEP and STL. Driver FETs heated first. README is just an image; details live elsewhere. Ageing 2019 design. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Reference |
| OpenTorque Hackaday loghackaday.io FET heating and bearing cost notes. | Article or blog post | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| OpenTurretcubanmakers Two NEMA17 and timing belts; the slip ring is still a to-do. Described as experimental. Author calls hardware experimental; accuracy targets unchecked, slip ring and docs are to-do. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openMITnot read | 3D printing | Lessons |
| ornithopter-hoverRCmags Hovering ornithopter with FreeCAD sources. README gives no flight proof or numbers. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | Context |
| Out of Darts: Rival Perses mod guideoutofdarts.com Rival blaster modification. | Guide | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Pan-Tilt-Mount (isaac879)isaac879 STEP exports seen. Printed gears 144:17 pan and 64:21 tilt. About 1 kg payload; shakes on fast reversal. Resolution figures are microstep arithmetic, not backlash. Quoted 0.0133 and 0.0369 degree figures are microstep arithmetic, not measured backlash. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openMITnot read | 3D printingPCB and electronics | Reference |
| PAROL6-Desktop-robot-armSource-Robotics BOM, STL files and instructions for a 3D printed robot arm Desktop arm; README gives no accuracy or payload numbers. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Lessons |
| Patent IL294087B2: recoil through centre of masspatents.google.com Put the recoil line through the centre of mass. | Patent | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| pcb-motor (ziteh)ziteh PCB axial-flux stator, work in progress. Work in progress; no photos or test data in README. | Open project | snippet only | low 0.4 | openMITnot read | 3D printingPCB and electronicsMotor winding | Context |
| phobiarombrew Sensorless FOC controller; specs only. Sensorless-focused STM32F4 design; spec list with no test data in the README. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | PCB and electronicsMotor winding | Context |
| Phoenix-MCADutiasSTARS University tailsitter mechanical CAD. University tailsitter; no flight evidence in README. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printingMoulding and casting | Context |
| pickle-ng_frameledroneclub Toothpick micro frame. Weights are estimates; micro drone frame. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openApache-2.0not read | Sheet metal and laserCNC machining | Context |
| POKRION-Speed-Dronepokrc Printable high-speed micro quad with blackbox flight logs. No speed or flight numbers in README; NonCommercial licence. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingCNC machiningMotor winding | Context |
| Printed open-source actuators for legged locomotion (Urs et al.)arxiv.org Two QDD designs under $200 with thermal and endurance data. | Paper or thesis | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Project Stinger (Main)Project-Stinger Four brushless flywheels with PID and a solenoid pusher. Repo has the firmware hex and assembly PDF; 3D files are in a separate repo. Performance numbers are claims with no test method; 3D files and firmware are in separate repos. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingCNC machiningPCB and electronics | Leader |
| Project Stinger electronicsProject-Stinger Electronics split from mechanics. BY-NC-SA licence; author says buying is cheaper and the source release is still incomplete. | Open project | snippet only | low 0.4 | licence unclearnot read | PCB and electronics | Lessons |
| project-artemisjoshmitcho Autonomous Nerf turret capstone. README holds one line, so everything rests on the summary. | Open project | snippet only | low 0.4 | GPL-3.0not read | none stated | Context |
| Protean modular takedown blasterFlygonial Single or dual flywheel cages (39.5 to 43.5 mm), 4:1 geared pusher, seven takedown pins. Open beta files are deprecated. Open beta files are deprecated and no velocity data is in README. | Open project | snippet only | low 0.4 | openCC0-1.0not read | 3D printingInserts and fasteners | Reference |
| PumpActionSkewerSillybutts Pump-action mechanism. Spring dart blaster; CC BY-NC-SA licence. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| PX4 vibration isolationdocs.px4.io Cut vibration at the source; software filters last. | Guide | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| RCWS_v5wildcard1719 Printed remote weapon station: 4 worm-gear axes on NEMA17, printed azimuth bearing, separate camera gimbal. STEP folder and design handbook. No performance numbers or test data; author says electronics documentation is lost. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Reference |
| reachy_minipollen-robotics Open-source desktop robot head with a parallel-platform neck README gives no motion numbers; specs are on external pages; hardware files licensed non-commercial. | Open project | snippet only | low 0.4 | openApache-2.0not read | none stated | Reference |
| Rival Juno blasterOUTOFDARTSSHOP Rival (foam ball) blaster files. BY-NC-SA licence, and the reviews and hardware listing sections are empty. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printingInserts and fasteners | Lessons |
| robstride (Python SDK)sirwart Python SDK for RobStride actuators. Software only. Software only, last pushed July 2024. | Open project | snippet only | low 0.4 | openMITnot read | 3D printing | Lessons |
| SatteliteRotatorLukas0025 Cheap az/el rotor for Gpredict. Needs a custom KiCad PCB; no performance data given. | Open project | snippet only | low 0.4 | GPL-3.0not read | PCB and electronics | Lessons |
| shadow-priceLCobeaga BLDC flywheels with a solenoid pusher. 2020 Arduino build; no chronograph results are given, only instructions to measure. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printingInserts and fasteners | Lessons |
| SimpleFOCMini v2simplefoc 24x25 mm DRV8316 board, 5 to 35 V, 8 A. Gerbers and BOM. Ratings are datasheet-derived; low-side sensing is not supported by all MCUs. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openMITnot read | PCB and electronics | Lessons |
| Siraya Tech: 3D printed dronesiraya.tech 4 to 6 mm arms, 4 to 6 wall loops, TPU for camera mounts. | Guide | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| Small-EQ-mount-OnStepromanhujer FreeCAD, STEP, STL and OpenSCAD per version. README is three lines and defers everything to Thingiverse and a video. | Open project | snippet only | low 0.4 | GPL-3.0not read | 3D printing | Context |
| snapmatesjmj3d PLA frame with a flexible PEBA snap-fit connector. No force data. No force or cycle-life data; needs multi-material printer and PEBA filament. | Open project | snippet only | low 0.4 | CERN-OHL-W-2.0not read | 3D printingSheet metal and laserMoulding and castingInserts and fasteners | Lessons |
| SO-ARM100TheRobotStudio Standard Open arm, a low-cost printed robot arm used with LeRobot Hobby servos; useful for BOM and assembly style, not for high-torque actuation. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openApache-2.0not read | 3D printing | Reference |
| source_micro (TBS)ps915 Micro FPV frame. Micro racing frame. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Context |
| source_one (TBS)tbs-trappy Open carbon freestyle frame; a stiff reference against printed parts. No README; stars suggest use but evidence is missing. | Open project | snippet only | low 0.4 | licence unclearnot read | 3D printing | Context |
| source_two (TBS)ps915 Open FPV racing frame. Racing quad frame. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Context |
| source_x (TBS)ps915 Large X-class frame. Giant racing frame. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printing | Context |
| SpryDrivebbokser 7:1 planetary, 0.13 degree backlash by the author. Tolerance notes: sand 4 mm dowels, fixture the ring gear facing. Backlash 0.13 degrees is author-stated without a method; needs mill, arbor press, laser-cut plates. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openMITnot read | 3D printingSheet metal and laserCNC machiningInserts and fasteners | Reference |
| SRP-2 recoiling blasterprintables.com Recoiling dart blaster; the feed ramp may need adjusting. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| startracker (dkm)dkm Printed-gear barn-door tracker. The README is a checklist with one failed laser test. README is a progress checklist; no numbers, BOM or build steps. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | licence unclearnot read | 3D printingPCB and electronics | Lessons |
| SuperAntennaz antenna rotatorYohanHadji Two worm reducers with NEMA23; 60 N·m target, 5.5 kg, built and mounted outdoors. Machined aluminium parts needed; the kit is no longer sold and machining prices rose. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | GPL-3.0not read | 3D printingCNC machining | Reference |
| swarm-turretmeub Printed WebSocket-controlled Nerf turret with video. Author states HOG tracking detects roughly 1 in 5-10 frames; ammo and speed unstated. | Open project | snippet onlyAuthors' claim: numbers stated, not measured | low 0.4 | openMITnot read | 3D printing | Reference |
| Team 254 build blogsteam254.com Compression in CAD differed from real; side plates recut. | Article or blog post | snippet only | low 0.4 | licence unclearnot read | none stated | not assessed |
| The Gryphon foam dart blasterFlygonial Semi-auto flywheel blaster: rack-and-pinion trigger, brushed motors on a flywheel cage. CAD is on an external Autodesk link; STL folder exists. Print in PETG for sustained fire. Main CAD is on an external Autodesk link, and the README shows no chronograph data. | Open project | snippet only | low 0.4 | openCC0-1.0not read | 3D printing | Lessons |
| Tinymovrmotionlayer Public source frozen at v3.0.0. Source frozen at v3.0.0; later releases are proprietary binaries and licences are mixed. | Open project | snippet only | low 0.4 | not read | none stated | Lessons |
| u360gtsraul-ortega Tracker firmware and system. The README has no mechanical detail. Firmware-focused; STM32 F1/F3 targets and little mechanical detail in README. | Open project | snippet only | low 0.4 | GPL-3.0not read | none stated | Context |
| VESC firmwarevedderb Widely used FOC firmware. Page not fetched. README is build instructions only; no performance data and GPL-3.0 licence. | Open project | snippet only | low 0.4 | licence unclearnot read | none stated | Reference |
| winder (aotenjo)aotenjo-xyz CAN winding machine that wound four BE4108 gimbal motors. Wire tension control is the key part. Winding quality of the resulting motors is not measured in the README. | Open project | snippet only | low 0.4 | openMITnot read | Motor winding | Lessons |
Role is the survey's judgement of a record within its class (leader, reference, lessons, context): not a quality grade. A single source, a search snippet, or untested judgement is what “low” means.