View allAll Photos Tagged oscilloscope
One of my favorite signs.
Both a treasure and a curmudgeon, Ed is gone now, as is the Black Hole, his labyrinthine and incomparable second hand shop of all manner of items he'd salvaged from the Los Alamos National Laboratories, where he had spent his career as a technician.
A devout pacifist, he converted an A frame house on the property into a "church" of sorts, where the sign claimed a"Critical Mass" was held weekly. He commissioned and had made and shipped, two obelisks of dark granite filling 60ft. train cars, inscribed with messages of peace and de-nuclearization. When he died I do not know what happened to them.
He called it the Black Hole because he said "everything goes in but nothing comes out." Both in the vast building and the acres surrounding it one could find anything you could imagine in a science fiction movie set. I think he even had an Interocitor in there.
I am proud of my 1960's working Geiger Counter I got there, and my slightly radioactive green marbles, my stainless steel "wastebasket", some supermagnets,etc. etc..I loved just poking through the catacombs of windings, glassware, oscilloscopes, miles of milar, blocks of superpure magnesium, books, projectors, high vacuume equipment, you get the idea.
Daffodils blooming on a hill near my house--shot with a mystery lens: Elgeet STL-Navitar 86mm f1.2. This lens was made for the TRW Space Labs in the 60s or 70s, use unknown. Probably for recording oscilloscope traces. as it is designed for 1:1 macro shooting.
Cabbage white in flight. This reverse mounted Elgeet 3" f/1.9 is an oscilloscope lens reverse mounted. It is not known for any photographic integrity of any sort and in its reverse mounting is devoid of sharpness, especially when off from that small fixed 'sweet spot'. I got lucky with this butterfly in that sweet spot and focus, and though this b'fly is proportionally small in the image, the intent with this setup had a lot to do with the bokeh of the surroundings, so here we are, and there we go, 'tis what 'tis!
a7s + Wollensak Dumont CRO Oscillo Raptar 0.9X 3 inches f1.9 (reversed; Fairchild Oscilloscope Record Camera T-450A)
Another image from that foggy, misty, winter's day, with...
Mounted an Elgeet 3inch f/1.9 Oscilloscope lens (one of the two lenses in the assembly, probably from the '60s), backwards taped to a bellows mounted to my Nikon FF DSLR, to fiddle with bokeh and optical imperfections. There is but one aperture, wide open.
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Spring flowers, Tower Hill Boylston, MA.
Freelensed (on a flppy bellows), a reversed Elgeet 3-inch f/1.9 oscilloscope lens.
a7s + Wollensak Dumont CRO Oscillo Raptar 0.9X 3 inches f1.9 (reversed; Fairchild Oscilloscope Record Camera T-450A)
Spring flowers, Tower Hill Boylston, MA.
Freelensed (on a flppy bellows), a reversed Elgeet 3-inch f/1.9 oscilloscope lens.
Another lens with multiples identities bokeh wise. Those are two exemples of difficult background to render with grace.
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a7s + Wollensak Dumont CRO Oscillo Raptar 0.9X 3 inches f1.9 (reversed; Fairchild Oscilloscope Record Camera T-450A)
I worked for over an hour on just this ONE photo which might not even be all that amazing but man does it rock in the swirlies department.
Visuals are taken from use of an oscilloscope which uses signals from musical instruments which converts it to patterns of light.
A word of caution to other photogs, they tend to like their darkness, as most psychedelic bands do these days.
Note: Tame Impala was on my radar a long time ago when they first released Innerspeaker and were opening up for MGMT:
www.flickr.com/photos/kirstiecat/4721440072/
Myspace: www.myspace.com/tameimpala
**All photos are copyrighted. Please don't use without permission**
First shots from this $50 oscilloscope lens! And my jury-rigged setup. My stacked helicoids give infinity or near-infinity, but a really long working distance when close focusing… It seems to get sharper when I fully extend both helicoids, and the working distance gets a bit shorter. I assume this lens is really designed to be very close to the subject for real sharpness. Lots to play with!
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I was strictly forbidden to watch this weekly TV show by my parents because it scared the living heck out of me! Still, I was strangely drawn to it at the age of 7. I would sneak-watch it in my room sitting inches from the tiny black and white TV with my fingers on the dial in case Mom or Dad walked in and I had to quickly switch to another channel.
There is nothing wrong with you television set.
Do not attempt to adjust the picture.
We are controlling the transmission.
We will control the horizontal.
We will control the vertical.
We can change the focus to a soft blur or sharpen it to crystal clarity.
For the next hour sit quietly and we will control all that you see and hear.
You are about to participate in a great adventure.
You are about to experience the awe and mystery which
reaches from the inner mind to the Outer Limits.
Thanks for all the well wishes. Still stuck at home recovering from chickenpox. Much better now thanks but I still look like a leftover from the Halloween party.
Been shooting yesterday (in my bathroom) with this rig that Cory Lum so kindly gave me. It's an old Polariod camera back with 2 bellow sections, used to take screenshots of Tektronix oscilloscopes. More photos in comments.
The DSO138 Oscilloscope $20 on Amazon (assembled). Displaying audio signal from a FM radio station.
TTGO ESP32 T-Display $16 on Amazon. Running a sketch I made to display news feed headlines.
Also, a DROK DC-DC 5-40V to 3.3V 5V 12V ADJ Adjustable Step Down Voltage Regulator, LM2596 4-Way Output Power Supply Board, 5A Buck Volt Converter Transformer $16 on Amazon.
More junk (on the right).
Looks like I need to clean my lens or my sensor or both.
The lines on the green mat make 0.5 inch squares.
Canon EF-S Wide-Angle Zoom 10-22mm - F/3.5-4.5
Autumn wood.
Freelensing (though attached to a free swinging bellows) my reversed 3-inch f/1.9 oscilloscope camera lens.
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Four second exposure of a scope displaying a lissajous figure. Typically an oscilloscope is set up such that vertical axis represents the voltage of a signal and the Y axis represents time. A lissajous figure can be displayed by putting the scope into an X-Y mode where the first channel displays voltage vertically and the second input displays voltage horizontally. If the signal sources are in phase, the result is a slanted line. Out of phase 90 degrees creates a circle. 180 degrees creates a slanted line in the other direction. Odd angles squash the figures to varying degrees. By keeping the frequency of one signal as a multiple of the other, a stationary overlapping waveform can be created - a sort of electronic Spirograph pattern
.
Winter.
Mounted an Elgeet 3inch f/1.9 Oscilloscope lens (one of the two lenses in the assembly, probably from the '60s), backwards taped to a bellows mounted to my Nikon FF DSLR, to fiddle with bokeh and optical imperfections. There is but one aperture, wide open.
If there is a chance to play, then play.
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This is the latest reorganization of my workshop. It has been a mess lately, so I had to get it a bit more organized. The bench now has casters so I can move it about. Most items in the basement have casters now since the flood we had last year. It was a mess! We only maxed out at 3 inches of water (the sump pump was clogged) and immediately got it down to 1/2 inch. That lasted 2 months! View the image close up and you will see how much junk I have accumulated ...this is just a small amount. Can you spot all 9 radios and two oscilloscopes?
The lagoon behind the restaurant was amazingly smooth and yielded almost a perfect reflection. The gentle currents modulated the jet trail reflections as if they were a waveform captured on an oscilloscope.
(2 minute exposure)
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A silly title for a serious workstation!
As the development of motor bogies continues, what became clear to me was the need for a dedicated R&D test workstation for motor drives and control electronics.
Thus, over the summer I have been building up this lab workstation with these features:
1. Fully instrumented track test loop - A loop of mixed LEGO and Fx Track elements enables continuous evaluation of bogie performance. The loop is fully instrumented for voltage, current, power, and vehicle speed. A laser spot thermometer can take snapshot measurements of temperatrure as well.
2. High capacity programmable power sources - The test loop or a standalone motor can be energized with either high precision/programmable DC voltage/current or NMRA DCC digital AC waveforms. This will allow development of both DC and DCC motor drive products.
3. Computer control - both manual and automatic measurement tasks can be performed with the aid of software. All of the sources, sensors, and test equipment is connected to an M1 Mac Mini. Custom built python scripts control measurement tasks including both instrument control and data acquisition.
Some of the tasks that we can perform are:
1. Measure vehicle speed, power consumption, efficiency as a function of applied voltage. This lets us characterize raw performance, endurance and can even detect differences in vehicle speed in straight vs. curve track segments.
2. Standalone motor evaluation in a special jig. We can measure motor power consumption, efficiency, temperature, and shaft tachometer speed. The temperature is particularly important when you consider that it will "live" inside a plastic box with potentially hours of continuous running. This will inform us on thermal management requirements for the bogie design, e.g. if we need heatsinks, cooling vents, etc.
The oscilloscope lets us monitor either track or motor terminal waveforms in realtime. This shows the motor's dynamic electrical characteristics such as inductive surges, back EMF, and estimate EMC/EMI performance. It also lets us analyze DCC digital waveforms on the track and verify compliance with timing and programming protocols.
This workstation is continuously evolving and we're currently road testing 3x engineering test samples of candidate motors provided by our motor manufacturing partners. Once we're satisfied with our choice we can finalize the mechanical drive and hopefully start tooling components!
Lots more work to do--but at least we have our own "Nurburgring"!
SOUTH CHINA SEA (Nov. 2, 2021) Aviation Electronics Technician 3rd Class Dylan Long, a native of Lake Mary, Florida, operates an oscilloscope in the calibration laboratory aboard Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson Carrier Strike Group is on a scheduled deployment in U.S. 7th Fleet to enhance interoperability through alliances and partnerships while serving as a ready-response force in support of a free and open Indo-Pacific. (U.S. Navy photo by Mass Communication Specialist 3rd Class Tyler Wheaton)
Residente: Latin Freedom fighter.
• Calle 13•
Sorry I haven't replied the flickrmails (away til Sunday): here's the Wikipedia definition of synesthesia:
"Sound → color synesthesia
Cytowic calls sound → color synesthesia "something like fireworks": voice, music, and assorted environmental sounds such as clattering dishes or dog barks trigger color and simple shapes that arise, move around, and then fade when the sound stimulus ends.[3] For some, the stimulus type is limited (e.g., music only, or even just a specific musical key); for others, a wide variety of sounds triggers synesthesia.
Sound often changes the perceived hue, brightness, scintillation, and directional movement. Some individuals see music on a "screen" in front of their face. Deni Simon, for whom music produces waving lines "like oscilloscope configurations—lines moving in color, often metallic with height, width and, most importantly, depth. My favorite music has lines that extend horizontally beyond the 'screen' area."[3]
Though individuals hardly ever agree on what color a given sound is (composers Liszt and Rimsky-Korsakov famously disagreed on the colors of music keys), synesthetes show the same trends as non-synesthetes do. For example, both groups say that louder tones are brighter than soft tones, higher ones are smaller and brighter than low ones, and low tones are both larger and darker than high ones.
This kind of synesthesia is usually easily achieved by means of psychedelic drugs, such as LSD, psilocybin or Cannabinoids."
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