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I'm sorry, P99 but, IMHO, as soon as you connect any constraining mechanism to the precessing axle, and begin to extract work from system via that precession, the dynamics are totally changed.
Never mind 'perfect' bearings: If supplying that work does not 'draw down' on the gyro's flywheel...
Came a bit late to thread but, IMHO, OP's query is akin to the rocket fallacy, 'In space, what does it push against ?'
If you attach a crank to the top bearing of a slanted gyroscope, so precession winds crank, does work, then the gyroscope RPM gotta slow to provide it.
'Owt for nowt.'...
Found them on Amazon...
"IP65 Waterproof Outdoor Security LED Floodlight with Built-in Photocell Sensor 20W "
"Weatherproof junction box"
Please use due care with 'mains' wiring, fusing etc. Feed via a 'safety breaker' to be sure, to be sure.
N
Faced with a similar situation for two pan/tilt IPCAMs and one 'trad' CCTV, I fitted our patio with an IR mini-floodlight with integral day/night photo-sensor.
Tough, IP 65, drew 20 Watt, played nice with the cameras by 'filling the shadows' and mitigating their night-lights' back-scatter from...
You've also got the issues of control and back-lash.
Surprisingly, you may do well with high-end 'modelling' servo motors. Trivial to control, well documented performance, tough as hi-tensile nails, and a truly astonishing variety of power / weight / speed / cost to choose from. Also, your...
Could you go the theremin route, and use the board's motion to modulate an ultrasonic or low-RF oscillator ?
Think 'metal detector'...
But I DO like the interferometer suggestion, provided you can sufficiently constrain your laser-diode's bandwidth.
FWIW, taken to tech-extreme, isn't this how...
Also, IIRC, if any product was made per that patent, or arguably related, there may be copyright issues, too.
One problem is 'patent trolls', wrangling whom will cost you so much in legal fees, that their sprawling patent portfolio is effectively off-limits.
Your patent attorney must find a...
I've seen some 'magic' tricks that relied on a mobile magnet under table, though I cannot recall detail or source.
One, IIRC, was technically a home-brewed 'linear motor', hidden in a plywood pasting table's shallow cavity...
Tangentially, our lab used several 'motor-less' stirrers, including...
Too many years ago, when I was into amateur robotics, I'd a home-brew motor-drive board which inspected & tested clean, yet would not work...
Much baffled searching later, I found a hairline fault across a broad track. This had appeared okay under wary examination, tests showed continuity, but...
Hi !
IMHO, measuring stellar parallax is HARD, which is why it had to wait until the mid-19th Century for large optical instruments and, after the first successful determinations, photography to allow multiple comparisons of positions six months apart...
Sorry, bit late to thread, but may I mention that an 'old fashioned buzzer', one with relay-like operation, really, really needs a protective diode across its coil to prevent back-emf zapping the transistor.
A self-oscillating, piezo-type buzzer / sounder is a lot more semi-conductor friendly...
Um, I don't know about DALI, but the configuration looks a lot like MIDI, where opto-isolation was obligatory, even for the shortest, simplest connection.
We're talking 'Murphy's Law' here: Otherwise, you'll get ground loops, ringing, stray EM, 'motor boating' and/or ultrasonic oscillation...
;-)
could you mcgyver something using an existing attic or outdoor aerial to feed a scratch-wound 'search coil' to tickle your sensor ?
( Ducks those Hams and RF folk throwing rotten tomatoes due gross impedance and tuning mismatch... )
IIRC, when early transistor radios only had low sensitivity...
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