Guy in a suit.

Reminds me of those R2D2-like bots that would roll around some colleges, trade-shows and other institutions that just featured a voice modulator/remote speaker to make it sound "robotic". I guess that's some kind of progress?

This is one of the standard methods for investigating sound production in vertebrate animals. You can also hook up electrodes to the muscles surrounding the vocal folds to study how they are involved in modulating the sound.
The trachea functions as a resonant structure. By pulling on it, he is increasing the volume of that structure and lowering its tuning.

Great video, but id like to see him expand this into digital modulation, ala QPSK / QAM, and how we use it to deliver data streams of whatever the hell we want.

He didnt focus enough on fundemental frequency noise products either, carrier tripple beat / second+ order distortions. Pretty important because a single band can cause noise in heaps of places across the spectrum.

....I work in telecoms, this audio video seems like fundementals to me

Comment hidden because you are ignoring dag. (show it anyway)

Gak - I was having some real issues finishing this. There must be some legacy Cheese Festival code in our blog post module - it wouldn't let me put in the word "grater" anywhere - without doing funky break-ups of the word. Funny!

The floaties are re-claimed at some point and I would guess that there are modules with critical equipment where water is not allowed. They no-doubt can pressurize segments and recover that water quickly with a vac source I'll betcha and send it right into the liquid recovery tanks.

When I saw 'Collins' in the tags (and taking note of the subject matter), I assumed it was the same Collins who piloted the big command module around the moon during Apollo 11 while Aldrin and Armstrong were on the surface making all manner of history & shit.

But it was just a coincidence.

I work in commercial heating ventilating and air conditioning. I can confirm this is true.

It's a bit more complicated when you bring modulating control valves that control the flow of the water through the coils. In the case of water, the change in heat is a function of the flow (gpm or l/m) and the change in water temp that the boiler can handle.

It's also a function of the amount of air you blow through the coil. Each of these (flow, temp change, boiler capacity, and air flow) are parameters with which you design your system to.

Also, in a residential setup, I don't think fan speed is variable, and I think the HHW control valves just open and close.

Modern inverter air conditioners can modulate the out going air temperature (they vary the compressor speed). Natural gas home heaters can also vary the out going air temperature (they burn more or less gas as needed).

So it depends on what sort of heater/cooler you are using.

Likely would roll around in the trailer.

>> ^Chaucer:

why could he not carry them the other way?

Your video, Mesmerizing Truck Module Flipping Skills, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

>> ^bobknight33:

Its cotton


Its cotton what?

*skill

This is an expanded version of the same machine. It's 50% larger, and only 3-4 of the modules have been carried over from the old one.>> ^ant:

Hmm, a dupe of http://videosift.com/video/The-Great-Ball-Contraption-Rube-Goldberg-Le
go but both show differently?

>> ^modulous:

My google-fu leads me to the information that she won this event. And all the others in that competition too.


Of course she did, no one could use the bars after that!

Anyone else hear pac-man when he was messing with the modulator?

Oh, I never meant to imply that it was easy. I've had to build a cpu twice, once for Computer Architecture and once for Digital Electronics. One was entirely simulated and one was loaded onto an FPGA (a programmable chip). Using software like Xilinx ISE or Altera, you can simulate the necessary logic gates to build and test the electronics, then "install" it to an FPGA. It took us about 2-3 weeks to do it, but it was definitely a hectic and stressful few weeks. What he probably did was simulate the setup and then build it to a couple of breadboards (which I can see there in the videos) using some component chips. (Here's a list of some on wikipedia.)

Now he also did a graphics module, which is not necessarily harder, but is built quite differently, so I estimate that took another month or so to figure out. Once those two major components are done, the rest of it is pretty easy to hook together, and all that's left is putting together the software.

So yeah, assuming he was doing this in his spare time, a year sounds about right. It just takes dedication and the willingness to learn the process. Nice to see a teenager willing to take the time to do it, and the results are testament to that.
>> ^marinara:

really? I agree, it's not a theoretical/conceptual feat. It's an engineering/fabrication feat. But, I can't ever use the word "easy" to describe what this teenager did.