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Test results by date
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Controlled release v1.28 · 18 October 2026. Current dispositions: 36 Passed; 7 N/A; 7 Closed — accepted limitation. Closure does not add unmeasured results.
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Task / testsActual resultRecordPhoto / videoGitHub source
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15 September 2026 — test; recorded retrospectively on 1 October
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First powered prototypeThe powered mechanism moved, but Rui reported uncontrolled operation. This early prototype observation does not describe the later working controls.Written recordPhotos / video
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22 September 2026 — test; addendum prepared 26 September
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First wet test and collectionFunctions met expectations on the earlier assembled system. The glued sieve, rocking retention and trapped material were recorded. Later R2 parts were not validated by this test.Written recordPhotos / video
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26 September 2026 — fit failure; reported 28 September, confirmed 1 October
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Screwless candidate fitZhishuai received the printed screwless parts on 26 September, found they could not be installed, and notified the team. Rui reported this on 28 September and confirmed the chronology on 1 October. Later screw-fastened checks remain separate.Written recordNo photo recorded
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29 September 2026 — report of earlier first-build checks
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Frame, travel and printed parts
UT-MECH-01–04		Initial mechanical assembly/check date: 13 September 2026 (Rui’s retrospective record). Frame placement and joints were stable. Full-range unpowered travel was smooth, and installed prints had no reported structural defects. Frame dimensions and diagonals were not measured.Written recordNo photo recorded
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29 September 2026 — reported; measurement dates not recorded
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Mesh and stroke measurements
UT-MECH-06
UT-CTRL-04		Rui measured both 3 mm and 10 mm meshes, reporting approximately ±0.1 mm deviations. At least ten target 30 mm strokes measured approximately 29.7–30.4 mm. Individual mesh readings were not supplied.Written recordRui measured; no photos taken
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29 September 2026 — reported; test dates not recorded
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Electrical checks and VREF
UT-ELEC-01–03,05		Unpowered switching, polarity and no-short checks were satisfactory. LED states were distinguishable; VREF was reported as 0.60 V. Insulation was completed later. No onboard DC–DC converter is installed.Written recordNo photo recorded
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1 October 2026 — test
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Buttons, motion and reset
UT-CTRL-01,03
UT-CTRL-08–11		The firmware booted and ran. Direction, release-to-stop, speed steps, bounds and interlocks worked. Stop/restart retained speed and centre. USB reset returned to READY at 50 mm/s.Written recordNo photo recorded
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Indicators and arm-only running
UT-ELEC-03
UT-MECH-03
IT-01,03,07		Indicators worked in the implemented states. Carriage motion was normal. A separate two-minute arm-only run at 50 mm/s and 30 mm stroke was satisfactory. No bucket or material was fitted.Written recordNo photo recorded
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Arm-only cycle timing
UT-CTRL-12,04
IT-01		Three ten-cycle trials per setting gave means of 25.700 s, 12.290 s and 8.537 s at 25, 50 and 75 mm/s. The expected timing trend was confirmed.Written recordNo photo recorded
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4 October 2026 — test; recorded on 5 October
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Six-screw retention and added load
UT-MECH-05,07
IT-01,02,09		The six-screw bucket and separate M3 fixing were secure during full movement, without vertical wobble. The 99.6 g of nuts represented added load; no counted mock-recovery test was performed.Written recordNo photo recorded
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Clear-water operation and leak check
UT-SIEVE-01,03
IT-04,08		Clear-water motion was satisfactory. Jianchen checked the assembled bowl; no leakage was reported. Approximately eight minutes was recalled, including one deliberate inspection/loading stop and normal restart.Written recordNo photo recorded
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5 October 2026 — reported work; recorded the same day
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Housing fit, insulation and controls
UT-MECH-04
UT-ELEC-01,03
IT-03,11		The controller housing and control panel fit was satisfactory. Jianchen completed insulation. Buttons, connectors and visible indicators worked with the cover fitted. Fixed solder joints and insulated-wire flex were reported.Written recordCover photo
11 Oct
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6 October 2026 — test
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Two-stage specimen workflow
UT-SIEVE-03
IT-02,04,08
ST-01,09		Startup, 3 mm sieving, retained-material 10 mm sieving, collection, cleaning and shutdown completed. Height adjustment corrected initial surface crossing. Checks found no abnormal loosening, leakage or splashing; the final enclosure interior was dry.Written recordPhotos / video
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Collection and sorting observations
ST-02		Three fractions followed the intended material path. Input specimen counts were unknown, so sorting efficiency was not calculated. The observed collection workflow remains valid.Written recordPhotos / video
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6 October 2026 — test; total refits clarified later
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Rinsing, removal and refit
IT-10; ST-08
UT-MECH-05		Josh performed rinsing. Rui reported no visible retained specimens, residue or refit damage on inspected contact surfaces. Two total sieve/retainer refits were later confirmed and accepted.Written recordPhotos / video
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6 October 2026 — demonstration and feedback
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Observed specimen condition and feedback
ST-04,10		Josh and Megan viewed the output positively; no paired damage assessment was performed. Sanika attended. An unnamed external participant gave seven suggestions, with no mandatory remediation reported.Written recordPhotos / video
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6 October 2026 — test; estimates clarified on 7 October
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Recalled processing and exposure times
ST-05,06		The same batch underwent approximately six minutes at 3 mm and nine minutes at 10 mm, plus up to three minutes handling. The 15–18 minute total was recalled, not timestamped.Written recordPhotos / video
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7 October 2026 — test
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Standalone fan function
UT-ELEC-06		Rui confirmed ten continuous minutes, correct airflow direction and no abnormal noise or vibration. The fan-function test passed. The photograph shows its bench setup.Written recordPhoto
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7 October 2026 — confirmation of earlier checks
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Post-tightening and attachment checks
UT-MECH-02,04
UT-MECH-05,07		UT-MECH-02 rotation and seating were satisfactory. Assembly/check date: 13 September 2026 (Rui’s retrospective record). Installed parts passed edge/defect checks. Two total sieve refits and three carrier-to-arm cycles were accepted variations; no extra cycles are claimed.Written recordLead-screw photos
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Wiring and powered safe restart
UT-ELEC-01
UT-CTRL-06
IT-03		Polarity, continuity/no-short, switching, insulation and secure-wiring checks were confirmed satisfactory. Powered reset and control-power interruption/reconnection left motion stopped, without unsafe autonomous restart.Written recordNo photo recorded
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7 October 2026 — confirmed; test date not recorded
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Separate static leak hold
UT-SIEVE-01		Jianchen completed a ten-minute static hold without leakage; Rui reviewed the result. Water transfer worked. This separate hold is not assigned the earlier 4 October execution date.Written recordNo photo recorded
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8 October 2026 — confirmed; test dates not recorded
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Installed cover, fan and functional runs
UT-MECH-04
IT-03,07,11		Cover and fan installation/function were confirmed. Separate unloaded and bucket runs each lasted ten minutes. A clean-water full cycle was also confirmed. Instrumented temperatures and detailed clearances were not recorded at that time; see the later 11–12 October results below.Written recordCover photo
11 Oct
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11 October 2026 — use confirmed the same day
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Current screw-fastened bucket useRui confirmed use of the reprinted bucket, sieve and retaining-ring assembly with both 3 mm and 10 mm flat sieves on 11 October. Duration and detailed observations were not supplied. No new quantitative performance or endurance verdict is assigned.Bucket configuration
Manufacturing row 41		Assembly photosScrew-fixed bucket
STL
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11 October 2026 — tests
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Passed — 10-minute
water-loaded runs
Fan off / fan on
IT-07, IT-11 evidence		Rui confirmed both fan-off and fan-on runs passed their ten-minute water-loaded scope. Each continuous run used the installed bucket, water and no specimens, with the enclosure lid closed. No abnormal behaviour occurred. Ambient temperature was 24 °C; paired Nano/A4988 readings are linked.Paired readingsPhotos
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Curved-sieve wet runs
3 mm and 10 mm		Rui confirmed two ten-minute runs for each 3 mm and 10 mm curved sieve. All four runs used full submersion without specimens. No problems were reported. These were four separate runs, not one continuous forty-minute run.Written recordPhotosCurved sieves
STL selection
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12 October 2026 — supplementary measurements and observations
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Passed — as-built frame check
UT-MECH-01; selected fit UT-MECH-04		Rui reports frame height 600 mm, base width 235 mm and side width 300 mm. On 12 October, he confirmed stable flat-bench placement, secure connections and no obvious misalignment or deformation. Six calliper readings and selected assembly interfaces are photographed.ReadingsPhotosFrame and carrier
STL selection
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Sieve aperture measurements
UT-MECH-06		One photographed aperture measures 3.0 mm in the nominal 3 mm flat sieve, 10.1 mm in the flat 10 mm sieve, and 10.0 mm in the curved 10 mm sieve.ReadingsPhotosSieve models
STL selection
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Stroke and control record
UT-CTRL-01,03,04,08,09
UT-ELEC-03		At least ten earlier target 30 mm strokes measured 29.7–30.4 mm. On 12 October, Rui accepted that range and confirmed no missed steps or progressive drift; the current commanded stroke is 30 mm. He confirmed the revised code and 10 mm/s setting functionally passed. New command bounds are 10–75 mm/s, with 5 mm/s steps. The 6 October Showcase used unchanged 1 October 25–75 mm/s code.StrokeControls12 Oct firmware
Stroke and speed
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Passed — documented driver current setting
UT-ELEC-05; electrical photographs		On 12 October, Rui reported VREF 1.28 V; the board shows R100 markings. Nominal 0.10 Ω gives ITripMAX = 1.28/(8 × 0.10) = 1.60 A, below the motor’s 1.68 A rating. Recorded low-speed operation and wet endurance had no reported abnormalities. This documents the tested current-limit configuration, not measured phase current. The separate 4.37 kΩ reading has unidentified measurement points.CircuitPhotos
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Static leak and residual-water checks
UT-SIEVE-01,02		Rui confirmed three successful static leakage checks; stopwatch displays are 10:30.68, 10:33.75 and 11:04.05. These intervals are not drainage-time measurements. Separately, Rui reported the qualitative drainage/residual-water outcome passed; photograph 6719 records the residual-water view.Water recordPhotosQ01 outlet
STL
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Passed — motion, wet endurance and enclosure inspection
IT-01,07,11		Rui confirmed ten minutes and 500 complete cycles: bucket installed, water, no specimens, fan on and lid closed. Before 30 mm oscillation, the height and centre are set manually with 15 mm clearance in each direction. He reported no operational or post-run issues, cooling obstruction or cable contact with moving/wet zones. Photographs show Nano 26.1→24.8 °C and A4988 26.1→25.7 °C; A4988 mid-run readings are 26.1 and 26.2 °C. Rated thermal capacity is not established.ReadingsPhotosEnclosure
STL selection
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Passed — readiness for 13 October specimen work
IT-12		On 12 October, Rui reported the team agreed to proceed with specimen work on 13 October. Required operation retains manual positioning, clearance checks, 30 mm oscillation, stopping and power isolation. This records the 12 October readiness decision. The session was rescheduled to 15 October; client acceptance is recorded below.OperationText record
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15 October 2026 — client review and acceptance, recorded the same day
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Passed — client acceptance
ST-10		Rui reported Josh accepted the sorting and overall system, also representing Megan’s view. ST-10 passed. IT-09 and ST-02–ST-07 are closed under D51 with accepted evidence limitations. Known-size mixed specimens and paired damage evidence were unavailable; no new numerical result is claimed.Acceptance recordMegan’s feedback
16 October
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Optional post-acceptance support16 October — Optional support requested after acceptance: connector printed and fit checked; spare portafilter available; PART-07 threaded filter-holder ring still printing. No extra bucket body is included. These parts are outside the original scope and are not acceptance or course-closure conditions. Delivery is not recorded as complete.Client requestPlanner
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