ARW 0.5487, BI 8.62 — first below target, second still above need the stationary recording + exact Allan-curve fit region. 'gyro noise' is way too vague a label Terms: angle random walk describes the integrated effect of rate noise; bias...
sensor solder joints kept breaking. taped contact was enough to try readings, not enough for wearing this second level example gave angular rates — save axes / units / offsets / actual loop dt hardware problem: solder joints between the...
LCD + speaker working by day 22, finally feedback without serial monitor Bluefruit link here but classic Bluetooth in the later app notes... check which board belongs to which version recorded work: LCD and speaker were functional by Day 22. The...
scaleMotors / convertDeg — ints eating decimals, static input, degree/radian mess redo from the COM equation. test zero + both signs + acos limits BEFORE motor movement reference functions: scaleMotors(float inclination) and convertDeg(float...
second servo added → sweep turned into vibration / continuous rotation?? separate supplies got the test working. need to measure the power behavior instead of leaving the explanation at 'probably draw/reset' symptom: after adding the second...
lunch-bag straps + folded towels for padding, surprisingly useful supplies 23.302 N shoulders / 21.150 N waist. keep strap lengths with the numbers assembly: repurpose lunch-bag cross-body straps, loop them through the wheel assembly, and attach...
waist load down, thigh stress up. same total weight, new annoyance temporary leg assembly came apart too... moving on to shoulder straps recorded distribution: waist 31.923 N; legs 12.529 N. Together these equal the previous 44.452 N total, so...
waist-only test: 45 min, 44.452 N, awkward arms + waist fatigue weight placement matters a lot more than just total mass. shoulders next? legs first in the notes protocol: wear the initial device while walking for 45 minutes; combine qualitative...
extra cardboard made the boxes too small for the plates lol side layers out, tape around instead. save rope spacing + shaft height before changing anything else assembly notes, Days 9–11: use cardboard containers in place of printed parts....
printer unavailable → use the discarded filament spools rope carries the box, shaft pushes it. possible side issue: crooked spool = periodic wobble = fake body movement to the gyro? fabrication constraint: school printing required supplying...
move the weights → shift COM, motor shouldn't hold the whole load 43.3 kg / 73.07 cm / 50 cm shaft... keep the sketch with this or the angles are going to become nonsense again mechanical idea: use two moving pendulum weights to shift...
5 days, repeated fingerprints, count cookies + retries separately keep the failed attempts too. also '10' in the lock table means no access within the limit, not success on try 10 Daily allowance test: enroll one administrator and five child...
fingerprint lock, then someone just tilts the box. right. 3×3 cm blocker through the chute slot — check it doesn't become a cookie jam machine failure mode: authentication at the fingerprint sensor does not prevent someone from accessing the...
4 LEDs = tiny vocabulary, no serial monitor needed. patterns should make sense without a decoder ring... save for later: blink rhythm vs color, esp if the colors are hard to tell apart problem: the original interaction depends on reading the...
fingerprint → whose cookie allowance? admin / child paths need to stay separate clock resets when unplugged... accidental unlimited-cookie mode. need a power-cycle test System: Arduino UNO, fingerprint sensor, motor-driven dispensing lever,...
