First week plan
Goal of the week: know the real numbers. Every task ends with a GitHub issue (Issues → Test result) containing the measured value, a photo (no student faces) and a decision. Parameters are changed only through a pull request.
Roles: Lead (decisions, ordering), Production (laser, 3D printers, Roland), Electronics (bench tests, class support).
| Day | Role | Task | Done when |
|---|---|---|---|
| 1 | Lead | Order samples: 5 × CR2032 holders with cover and switch (both "single" models), 2 × 2×AAA holders with switch, LED assortment (white, blue, red, green, yellow), resistor set (22, 47, 100, 150, 220 Ω), 3 multimeters, conductive copper tape | Order placed, delivery dates noted in the issue |
| 1 | Production | Comb test: cut v1_comb_test_laser.svg on the Epilog and on an xTool, from the real plywood. Try each slot with a plywood tab, find the width that slides in by hand without force and does not wobble |
Best width for each machine recorded (3.00–3.30 mm) |
| 1 | Electronics | Copper tape check: multimeter from the adhesive side to the foil side on 5 spots of each roll | Conductive or not, per roll |
| 2 | Production | 3D test prints: nose cone with slotW 3.2 / 3.3 / 3.4, diffuser with pocketD 110.25 / 110.40 / 110.55 (translucent PLA and PETG if possible). Note print time and filament per part |
Best values and print times recorded |
| 2 | Lead | Review comb test result, open the pull request that sets SLOT_W (base plate, panel tab, wing tab) |
PR merged, generators rebuilt |
| 3 | Production | Cut the first full laser set with the new values (base, 3 panels, 3 wings). Sand edges lightly | One complete set, photo |
| 3 | Electronics | Bench test when the samples arrive: CR2032 holder + 2 rails + 3 LEDs on a plywood scrap. Measure open-circuit and loaded voltage, current per LED type, brightness | Table of LED type vs. current and brightness |
| 4 | All | Integrated prototype: an adult builds one ship following only the assembly drawing, timed with a stopwatch. Test the order of assembly steps 4-5-6 | Time recorded (target 15–20 min), problems listed |
| 4 | Electronics | Dark-room test: all three LEDs visible from 3 m? How bright is the nose cone? | Photos and verdict |
| 5 | Production | GS-24 copper cut test (10 cuts of the two rails) and BN-20 sticker test on bare plywood: adhesion, clean peel, no ink bleed | 10/10 clean cuts, sticker verdict |
| 5 | Lead | Review all issues, decide: first pilot date, which parameters to freeze, what to re-test | Written decision in the issue tracker |
Rules
- Do not change a design file by hand. Change the parameter in
projects/welcome-space/generators/, runbuild.py, open a pull request. - If a gate fails, that is a useful result. Record it, do not hide it.
- The holder samples may arrive late: do the tasks that do not depend on them first (comb test, copper tape check, 3D test prints).
- Keep one tray for all small parts and count coin cells in and out.
Gate criteria
| Test | Pass |
|---|---|
| Comb test | Slides in by hand, no force, no wobble |
| 3D prints | Nose cone and diffuser both fit |
| Electronics | 10 circuits out of 10 light all three LEDs |
| Integrated prototype | Adult builds it in 15–20 minutes |
| Dark room | Three LEDs seen from 3 m |