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This musical painting was created under my direction by two MIT undergraduates, Kiran Wattamwar and Christina Sun.
See a video here:
www.youtube.com/watch?v=nQdGTH1bAk4
The musical content is inspired by the Chopin piece "Fantasie Impromptu." It's made using Circuit Scribe conductive ink and colored pencil on paper. The paper is covered with a sheet of transparency with laser cut holes in the locations of each note-- this prevents the sliding finger from triggering notes when touching the connecting lines in between. The painting uses a Teensy 2.0 running capacitance sensing code, sending MIDI to a computer running Ableton Live.
This is a capacitor checker. It also has some multimeter functions. This unit will check for shorts, open, and leakage. It will also determine the capacitance in microfarads.
The neon tube on the right demonstrates leakage. The tuning eye tube (left) is adjusted for the largest opening to determine capacitance. This unit only works up to 70 microfarads. I don't have the manual (just the inside-cover insert) and am not sure if there is a way of multiplying its capacity. As pictured the unit is in use testing a 2-part electrolytic Mallory capacitor from a power supply. It leaks badly but the measured capacitance is correct!
Notice the nail polish markings on the face. These are from a previous owner who did not value his tools as I do.
Here's an Interesting piece of obsolete technology from the local second-hand store. A RCA Selectavision player - produced from 1981 to 1986. played 300 mm discs similar in appearance to LPs. Discs known as CEDs (Capacitance Electronic Disc) Each side of two sided disc held 60 min of video.
Decoupling caps are Audio Note Kaisei capacitors, the bridge rectifier consists of 4 MUR860 diodes and the two power supply reservoir capacitors in parallel are Audio Note standard electrolytics, bumped up from 330uf to 470uf each. No paralleled Muse capacitors on the decoupling any more; terrible idea, never should have tried. The Elna Silmic II I had in before were really good, especially considering their price in comparison to the Kaisei but if electrolytic capacitors are the weak point of an audio circuit I really wanted to know what the supposed "best" would get me. Plus it sounded really close to my solid state amplifier/preamp and that's great but also a very neutral sound so I wanted to mix things up and have some distinction between my solid state amplifier and my tube amplifier. Still under the godawful amount of hours everyone says they require for burn in and sounds amazing. The film capacitors in between the preamp tubes and power tube have been doubled in capacitance and are nice blue Clarity Cap MR. I'm hoping it won't draw any extra current and I've got my fingers crossed that I haven't screwed something up. From what I read about coupling caps going slightly higher shouldn't cause any problems, as long as I don't choose a smaller value than the default then I won't have any high frequency cutoff but the extra bass I hear might be more a characteristic of the Clarity Cap than the increased capacitance. The Mundorf Silver Oil capacitors were really nice but I swapped them out for higher capacitance Clarity Caps that I had on hand to see if I could get a little more bass. Some bass really, even just a little. I should have waited longer to break in the Kaisei caps but I did it anyway. I can't tell if it's the higher capacitance or just the character of the Clarity Caps that actually gives more low end but I think I've taken this amp as far as it will go. There are far more sophisticated capacitors I could install but I'm not sure the design would resolve enough to warrant something higher end. Was all the money spent worth it? Probably not, I might be crazy. Maybe it's time to build a Bottlehead Mainline kit. Wait, it's how much? oh dang...
Updated: Swapped out the Clarity Caps for 0.22uf Solen FEP Tin foil and teflon capacitors. It's only been just a few hours but holy fuck.... Now I'm done, I don't see how it would get any better without changing the design.
The last version didnt have enough capacitance on the supply, so it would often self-limit to about 250VDC into the tesla coil. Now ive got 7500uF at 700VDC.
Stylish, sleek and modern table top setting within a business workspace. This innovative installation can greet and impress visitors or allow employees to interact with each other via the one screen embedded within the table.
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I sometimes go on Ebay and look for caps that might be useful for a microsecond flash. Many film capacitors are not suitable because the connection of the film to the terminals is small and burns out under pulse conditions when the peak currents are hundreds of amps.
These little puppies looked promising, so I bought them and tried them out. They appear to flash well, the capacitance is a little low, but should make a slightly faster flash. I spent some time today building on of my Lexan/polypro cases.
It's smaller than my existing flash head by about 30%. I have always liked smaller electronics plus smaller flash heads means more options placing the flash.
This unit will run off my existing power supply, which is huge and connects to the heads using HV cable.
Cheers.
Decided to try out the new flash head with an easy subject.
Unlike past shots of this frame, the ribbons are just hanging, not tied down on the bottom and just hanging from the top.
The pellet moves fast enough that the ribbons are all pierced by the pellet.
Lead is really moving.
I also did a few closeup shots of pellets using the new head and the old head. It turned out really nice, they look much the same.
The new head appears to direct the light better with the parabolic reflector and should be brighter since the capacitance is 50% higher.
Cheers.
Welcome to www.kkulikov.com - Photos and footage for mass media, advertizing agencies and design studios, and also private designers and bloggers.
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Reference® RIC09T - instrument cable (ACADEMY series) assembled with Amphenol TM2PB-AU Phone Plugs.
Designed for MULTIPURPOSE application, RIC09 T instrument cable represents the smartest way to get a full and natural sound from your unbalanced musical instrument, at affordable price. It has been designed to deliver higher quality signal transmission, superior durability and reliability than most of hi-q instrument cables in the market. Featuring extremely wide and detailed frequency response, superb noise rejection and great flexibility, this cable is perfect for all electrically amplified musical instrument, such as electric guitar, bass and keyboards, whether live and in the recording studio. Double shield construction provides strong protection against hum and any kind of external interference. Purest oxygen free copper (99,99%) conductor and polyethylene foam dielectric ensure crystal clear sound and flawless audio transmission. Hand assembled with highly reliable machined phone plugs, RIC09T is definitely the best cost-effective solution for any musician who cannot refrain from Reference Cables excellence. Then... Why settle for less? Get off to a good start. Long for a true tone.
Cable Specs
Inner Core: Stranded Red CU 30x010 Ø AWG23
Insulation: FOAM PE Ø 1,8 mm
Shield 1: Carbon PVC Ø 2,5 mm
Shield 2: Braided Red Copper + Braided Tinned Copper
Jacket: PVC Superflexible Ø 7,6 mm
Bending Radius: 8x cable Ø
Impedance: 53 Ω
Capacitance cond/shield: 36pF/ft
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Seeing is believing as IAEA Senior Laboratory Technician, Jose Luis Arrillaga shows IAEA Fellows soil moisture readings measured with capacitance sensors during the Fellowship training at the Agency Laboratory in Seibersdorf. 7 June 2012
Photo Credit: Dean Calma / IAEA
If you thought touch screens only come in one dimension then think again, with the help of the visualplanet touchfoil™ make your world an interactive one.
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web: www.visualplanet.biz
Reference® RIC09T - instrument cable (ACADEMY series) assembled with Amphenol TM2PB-AU Phone Plugs.
Designed for MULTIPURPOSE application, RIC09T instrument cable represents the smartest way to get a full and natural sound from your unbalanced musical instrument, at affordable price. It has been designed to deliver higher quality signal transmission, superior durability and reliability than most of hi-q instrument cables in the market. Featuring extremely wide and detailed frequency response, superb noise rejection and great flexibility, this cable is perfect for all electrically amplified musical instrument, such as electric guitar, bass and keyboards, whether live and in the recording studio. Double shield construction provides strong protection against hum and any kind of external interference. Purest oxygen free copper (99,99%) conductor and polyethylene foam dielectric ensure crystal clear sound and flawless audio transmission. Hand assembled with highly reliable machined phone plugs, RIC09T is definitely the best cost-effective solution for any musician who cannot refrain from Reference Cables excellence. Then... Why settle for less? Get off to a good start. Long for a true tone.
Cable Specs
Inner Core: Stranded Red CU 30x010 Ø AWG23
Insulation: FOAM PE Ø 1,8 mm
Shield 1: Carbon PVC Ø 2,5 mm
Shield 2: Braided Red Copper + Braided Tinned Copper
Jacket: PVC Superflexible Ø 7,6 mm
Bending Radius: 8x cable Ø
Impedance: 53 Ω
Capacitance cond/shield: 36pF/ft
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At only 200 micron thick this unique solution can turn your shop window, exhibition space or your glass office wall into an interactive information display. Our single touch version touch can work through up to 25mm, 1inch of glass and manufactured from 30 to 100 inch screen sizes
By making the touch an integral part of the rear projection film we have provided a solution that is faster and cleaner solution to install than separate touch and projection film solutions.
Uses for this product:
Interactive shop window
Exhibition stand
Meeting room
Sizing upto 168 inches diagional 4M x 1.4M (single touch) 80" 4:3 16:9 multi-touch
Touch function: Pro-cap through glass touch
Target market:
AV installers
Digital signage resellers
Sales@visualplanet.biz
To learn more about the touchfoil™ and it's stunning capabilities, go to our website at www.visualplanet.biz
Call: +44 (0) 1223 202949
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LCF (inductance, capacitance, frequency) meter using arduino (LCDuino), a local lm311-based oscillator, a pair of AA batteries and an adafruit dc/dc 5v upconverter and an adafruit xbee hosting board for wireless data logging.
here, a small inductor is connected and this resulted in 1.057mhz
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Attract busy areas with innovative large format displays. Extend the excitement of advertising campaigns with the truly creative Digital Ad van integrated with visualplanet's interactive touchfoil™.
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Visualplanets touchfoil has been actvating shop windows for touch since 2003.
This example using the touchfoil was installed for a promotion in 2011, using a 143 inch touchfoil and a impressive rear projection system installed by our partner Paradigm.
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CED = Capacitance Electronic Disc, CEDs are an old rental video format from the 1980's. Each disc is 13x14 inches. Star Wars, Empire Strikes Back, Return of the Jedi, and Raiders of the Lost Ark. Storm Trooper included for size comparison.
Innovative and creative LCD touchscreens using the visualplanet touchfoil™ on display at Eco-Products 2008 Exhibition. Providing valuable information about products and services and ongoing campaigns using the visualplanet touchfoil™.
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An excellent hunk of equipment from Sumner, WA1JOS. It uses the Jackson Harbor Press PK4 chip, apparently "proprietized" here by Sumner-san himself. As many other OPs have noted before me--this is about as much fun as a fella can get with a 20-dollar bill.
I'm quite new to PIC-based technology, so please bear with my pedestrian description: There are two of the 12F683 chips in this kit. Picture and datasheet here.
It would be really fun to get into PIC programming. I've noticed Bre Pettis doing it over on MakeMagazine.com and it's piqued my interest plenty.
Anyway, when I saw the tops of these chips "blackboxed" I instantly felt like I had to dig up the poop on these chips.
UPDATE: I received a comment on a popular QRP radio reflector in regard to these interestingly obfuscated chips from a prominent programmer ham in Prague: The chips are not PICs, but QT-113H. I have little doubts about it, even though
the touchkeyer seller insists it is a custom programmed PIC. I even asked him
directly and he repeats his truth. If it was a custom programmed PIC, then he
will not need to file out the chip label. I built mine with two SMD QT-113H
chips, that I bought from Farnell.
You did a fancy job, but the keyer is very insensitive, if you glue the
electrodes directly to the tin. You found it already by trial and error. The
capacitance of the electrodes against the tin is too high. It helps a lot to
elevate them. I placed a piece of plastic ruler between the electrodes and tin.
You could find more info on electrodes and sensitivity in QT-113H datasheet.
Fair enough. -Jonathan
Arduino-based capacitance meter.
The capacitor to be measured is placed in a 555 oscillator circuit and an Arduino measures the frequency and displays the calculated capacitance
The grand-daddy of electronic and electrical test! Introduced in 1936 with a - then - astounding sensitivity of 1000 Ohms-per-Volt (if the divide-by-two button is operated), this meter was still available in 1980 (it cost £109.70).
Note the similarity with the AVO 40. It will be seen, however, that the AVO 7 can measure capacitance up to 20uF, as well as power and db - useful for audio output-stage work. Each instrument's scale is hand-calibrated to the meter it is fitted to. The scale on the AVO 7 is a 100 - 400, compared with the 120 - 480 scale of the AVO 40.
This particular instrument (Mk II version with 4mm terminals and power-factor measurement facility) was made in 1958.
A reception area touch screen using the interactive visualplanet touchfoil™, perfect for informing existing and potential customers about products and services in an exciting manner upon arrival.
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Through Window touch sensitive products brochure - attract passers by to your shop and product offerings with the help of the visualplanet touchfoil™, easy to install.
Visit www.visualplanet.biz for more information on how the touchfoil™ can benefit your business and engage customer interaction.
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This very simple public facing panel built for my 16mm scale narrow gauge "WCR Preservation Line" at our Padiham exhibition on 1st Nov 2014 allows visitors to “be the signalman” – yes, this is something you CAN touch ;-) The CDU (capacitance discharge unit) is normally out of sight.
A shop window allowing through window touch interactivity via LCD Touch overlay system. This reaches external customers and attracts new attention to your products and services.
Visit our website at www.visualplanet.biz to discover more about the visualplanet touchfoil™ and how our through glass technology can benefit your business.
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These are the antennas for WPAT 930 AM. WPAT (W PATerson) was for many years an "easy listening" station that played elevator music (they called it "Beautiful Music"). It was "your parents station". In the 1990s WPAT was bought by ABC, and due to FCC regulations, the AM station was sold, ending a 50+ year run as a music station. Since that time the AM station has been Spanish, then Korean, then Spanish again.
This is the Clifton NJ transmitter site on Broad St, which sits in a residential neighborhood (see the map). The former WPAT studios (from the music days) and transmitter shack are at the front of the property. Part of the old WPAT's logo (the Statue of Liberty head) can still be seen on the wall.
WPAT's unique antenna design utilize a "capacitance hat" at the top of each tower which enabled the designers to reduce the tower's height. WPAT transmits at 5,000 watts 24/7.
Carver Model M-1.0t 1000 Watt Magnetic Field Power Amplifier
8-ohm FTC rated power/ch 200W
4-ohm FTC rated power/ch 500W
Bridged mono power 1000W
4/8-ohm FTC rated THD 0.15%
Rated full power bandwidth 20Hz to 20kHz
S/N-IHF A-Weighted,dB -110dB, IHF A-Weighted
Slew Rate >200
Carver Sonic Holography Preamplifier tuner Model CT-Seven
PreAmp Section
Frequency response 20-20kHz +- 1dB
Maximum Output 7 V
Total Harmonic Distortion 0.01 %
S/N-IHF A-Weighted 98
Phono sensitivity for 0.5V@1kHz 1.5
MM Phono Overload mV 100
Phono input capacitance pF 150
MM S/N A-weighted 0.5v ref. 100
Tone Controls 3-band
Inputs 7 audio
Comments: integrated Sonic Holography
Tuner Section
IHF Sensitivity mono/stereo,dBf 14.3/20.1
Capture ratio,dB 1.4
AM Suppression,dB 62
Alt. ch. sensitivity,dB 72
Separation at 1kHz,dB 46
THD at 1kHz,stereo 0.02 %
Maximum S/N,stereo,dB 79
Station presets 16
Basic electronics lab where I'm building small projects such as Boarduinos, Semiconductor analyzers, inductance/capacitance meters, MintyBoost USB chargers, and more.
This test instrument is a capacitance test bridge. It is used to give highly accurate measurements of the capacitance of capacitors. This model is the General Radio (GR) Type 1611-A. It was produced in about 1954.
This unit is large. It weighs about 25 pounds and mesures 14" x 13" x 7". I purchased it at a ham flea market. The guy looking at it before me tried to get the price down because he "just wanted to take it apart and remove the vernier dial for a project". I immediately bought it when he left. I thought $25 was a good deal at about $1 a pound.
This bridge works real well - the accuracy is astounding. After connecting the test capacitor to the posts on the left you set the range (switch below magic eye tube) and than add power to the capacitor (switch to left of eye). You adjust the Capacitance dial for the greatest opening of the eye. Leakage can be measured by using an external multimeter. This is a fun instrument, but I only take it out occasionally.
(I had a lot of trouble taking the photograph. Any hints on getting a good shot of an all black item would be helpful. I got glare from the room light, etc. ...tried tripod, slow speed, flash, no flash...oh well!)
LCF (inductance, capacitance, frequency) meter using arduino (LCDuino), a local lm311-based oscillator (not shown), a pair of AA batteries and an adafruit dc/dc 5v upconverter and an adafruit xbee hosting board for wireless data logging.
LCF (inductance, capacitance, frequency) meter using arduino (LCDuino), a local lm311-based oscillator (not shown), a pair of AA batteries and an adafruit dc/dc 5v upconverter and an adafruit xbee hosting board for wireless data logging.
www.visualplanet.biz/contact-us/
Visualplanet's touchfoil™ integrated with four LCD screens in an interactive showroom. The visualplanet touchfoil™ uses projected capacitance touch technology to bring interactivity to life through any non-metallic surface.
To find out more information on the unbelievable touchfoil™ and how it can make any business interactive and appealing, go to our website at www.visualplanet.biz.
Call: 44 (0) 1223 202949
email: sales@visualplanet.biz
web: www.visualplanet.biz
Here is a picture of my stock Maxwell cap and the new CJE cap. The new cap is much smaller and goes up to 20kV rather than 35kV.
Since the capacitance is higher .05 vs .03uf, the light flash should be slower, but if Niles photos are any guide, it will stop a bullet in flight very well.
On a side note, I haven't posted for a while for strange reasons. A prescription drug that I had been taking for a few years suddenly went strange on me. It took me some time to figure out what was going on and even longer to get over the withdrawals from the stupid stuff.
I am kind of perturbed by the whole thing for several reasons. First, that the doctor would give me this drug in such a casual manner, without any cautions about side effects.
The second is a point of curiosity. The medical profession is deeply suspicious about drugs like heroin and cocaine, which start by giving pleasant experiences and then turn bad and have strong withdrawal symptoms.
Fair enough.
But then they prescribe drugs which give no pleasure and turn out to have very strong withdrawal symptoms.
Sounds like the old Puritan ethic again to me.
Anyhow, in closing, I intend to search very carefully on the internet for side effects as well as withdrawal symptoms for any nostrum that my local blood-letter prescribes for me in the future.
Cheers.
LCF (inductance, capacitance, frequency) meter using arduino (LCDuino), a local lm311-based oscillator (not shown), a pair of AA batteries and an adafruit dc/dc 5v upconverter and an adafruit xbee hosting board for wireless data logging.
Designed to react to touch from the other side of windows/glass, by using the visualplanet touchfoil™ which can be laminated to any non-metallic surface to provide an instant interactive touch screen.
For more information about the limitless possibilities the touchfoil™ can provide, see our website at www.visualplanet.biz.
Call: 44 (0) 1223 202949
email: sales@visualplanet.biz
web: www.visualplanet.biz
LCF (inductance, capacitance, frequency) meter using arduino (LCDuino), a local lm311-based oscillator (NOW shown), a pair of AA batteries and an adafruit dc/dc 5v upconverter and an adafruit xbee hosting board for wireless data logging.
An example of our touchfoil™ being used in the shopping centre, Forum Nová Karolina in Ostrava as a vibrant touchscreen navigation map.
Get in contact with us to learn how our unique interactive touchfoil™ can make interesting interactive kiosks at:
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Visualplanet have been manufacturing and supplying the touchfoil to our world-wide VARs and OEMs since 2003. The touchfoil continues to be the power inside shop windows, outdoor displays and bespoke furniture solutions for major customers all around the world.
If you would like to become a partner or if you are an end user looking for an large format interactive digital signage solution come and talk to Visualplanet and we will be please to help.
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Mounted ZX Spectrum tape covers.
Mounted front panel from a dead, vintage audio amp. Holes are backlit with LEDs and the dials cycle up and down. You can control the speed and lighting by touching the wood on top of the frame - a capacitance based qprox sensor detects the proximity of your hand to act as a switch.
The switch is multimodal; a quick touch cycles the lighting modes to on/dim/off, holding your hand there for 3 seconds enables the speed setting mode - the dial increments one level on the panel meter per 2 seconds held, ie, hold your hand there for 10 seconds and the dials take about 30 mins to cycle, hold it there for 1 second and the dial will cycle at once every 2 seconds.
All control is done with a PIC microcontroller (before I swapped to AVR). This was my first electronics project.
A real tuned input. Also put a much better blocking cap with a much better capacitance value in it. He only had about 1300pf. LOL. The junk some people peddle.
LCF (inductance, capacitance, frequency) meter using arduino (LCDuino), a local lm311-based oscillator (not shown), a pair of AA batteries and an adafruit dc/dc 5v upconverter and an adafruit xbee hosting board for wireless data logging.
Within the tabletop of a conference room setting, this superb installation offers the ideal collaborative working environment. Using visualplanet's captivating touchfoil™ technology users can simply touch the glass and navigate around the display content freely.
Turn any window or display into an engaging interactive touchscreen at www.visualplanet.biz.
Call: 44 (0) 1223 202949
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