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A pretty amazing place. It starts with a ton of hardware shops, that fades into a street that is packed with breadboards, arduinos, cell phone screens, and other parts. Then, you find the processors, motherboards, cell phones, graphics cards, and knock off game consoles. Finally you come to the upscale part that has stores like HP, Dell, Lenovo, Acer, and more all selling their desktops and laptops. This was taken in the latter.
It was pretty busy.. This was even right after a heavy rain, so you know it is always this crazy.
Enjoy :D
A 21st century interpretation of William Penn’s “greene country towne” will appear atop the PECO Crown Lights as the first Art in the Air exhibit of 2011 opens Friday, Sept. 2.
"The Green and Growing City" was created by Timothy Wingert specifically for the PECO Crown Lights as an animation reflecting both the life and energy of the city as well as Philadelphia's leading role in making urban areas "green" and artistically integrated into their natural surroundings. This 30-second animation of nature's growth and life cycles seen on top of one of the city's prominent structures represents what William Penn's idea of a “greene country towne” is all about.
Wingert’s work will be shown alongside “Dancers” by James Simpson and “Cool Waves” by Chris McManus. All three pieces will be displayed on the Crown Lights each Friday in September from 7 p.m. to midnight.
Art in the Air is a partnership between Breadboard, a program of the University City Science Center that explores the intersection of art, science and technology, and PECO. The September artworks were selected by Breadboard and PECO.
New exhibits will be mounted in October, November and December. In January, PECO and Breadboard will select the “Best in Show” works, selecting up to three pieces featured during the four, month-long exhibits for a chance to receive a $1,000 prize from Breadboard.
“Art in the Air” was launched in 2010 during Philadelphia’s annual Welcome America Celebration, commemorating the first anniversary of the launch of PECO’s new energy efficient LED Crown Lights system. In 2010, PECO featured the works of more than 20 different artists atop the lights as part of the program.
Artists interested in submitting their work for consideration should click here or submit their work to artintheair(at)sciencecenter(dot)org. More information about the PECO Crown Lights is available at www.peco.com/crownlights.
About Breadboard:
Breadboard is a program of the University City Science Center that explores intersections between contemporary art, design, science and technology. Expanding on 30-plus years of Esther Klein Gallery programming, Breadboard's mission is to convene communities around creative applications of technology. Breadboard also manages the Esther Klein Gallery (now known as EKG) at 3600 Market Street.
A relatively small project I've been working on lately: A clock/countdown/stopwatch with a big LED display and RF remote.
I'm planning on making a nice laser-cut wood box for the whole thing, and donating it to my parkour gym.
The Teensy is a breadboard-friendly development board with loads of features in a, well, teensy package. The Teensy 3.0 brings a 32 bit ARM Cortex microprocessor into the mix so you can do some serious number crunching.
The Teensy 3.0 comes pre-flashed with a bootloader so you can program it using the on-board USB connection: No external programmer needed! You can program the Teensy in your favorite IDE using C or you can install the Teensyduino add-on for the Arduino IDE and write Arduino sketches for Teensy!
The processor on the Teensy also has access to the USB and can emulate any kind of USB device you need it to be, making it great for USB-MIDI and other HID projects. The 32 bit processor beings a few other features to the table as well, such as multiple channels of Direct Memory Access, several high-resolution ADCs and even an I2S digital audio interface! There are also 4 separate interval timers and 4 delay timers that don't conflict with the PWM channels on the uC! Oh yeah, and all pins have interrupt capability.
All of this functionality is jammed into a 1.4 x 0.7 inch board with all headers on a 0.1" grid so you can slap in on a breadboard and get to work!
And it's done! Old Thomson wireless router fitted with an arduino duemilanove inside, 8 leds on digital out pins, one potentiometer and a footswitch on analog inputs. The footswitch is an old Zoom expression pedal and it has a 100k pot inside it. The midi out port sends midi control change message. The control function is selected with the "select" pot and the value is adjusted with the footpedal. I can send any midi message from this however, so I could turn this into a midi sequencer of sorts, just send midi notes instead of control change messages.
I can choose an effects mode with the toggle switch, which will modulate the control change parameter in different ways. So far I have a random mode, ramp and up-down modes, demonstrated in this youtube video (or the same video on vimeo).
The red freeze button allows me to lock the pedal once I've found a sweet spot. Pretty kick ass for my first Arduino projects! If anybody is intrested in source code or schematics, leave comments below.
Arduino midi out is really easy, check out this tutorial.
This midi message table will help you send the right kind of messages.
In this picture: The breadboard shield fitted nicely on top of the Arduino, only problem was that the digital pins 8-13 on the arduino do not align with the breadboard, i.e. the gap between pins 7 and 8 is not 0.1" (2.54 mm)! That sucks, but it was fairly easy to bend the pins slightly before soldering them on the breadboard.
The entire circuit takes 12V in, then a has an LM7805 making 5V and an op-amp/npn transistor-based adjustable regulator making approximately 3V. The 12V feeds the 3 and 5 volt regulators as well as the switching transistor for the control circuit.
The control circuit sources 12V to the grids and anodes of the VFD, and it's actually 10.78V getting to the grids/anodes after the drops on the transistor and the current limiting resistor.
3V is used only to drive the filaments of the VFD, it's actually at 2.25V in order to create a 1.5V drop on the filaments after the drop on the current limiting resistor.
5V is used for all my reference voltages... that's pretty much it, and it's there in case I need to drive any 5V logic for my Digital 1 class.
14 switching transistors will be needed in order to display anything worthwhile on the VFD, thus why the switching transistor circuitry is still "floating" around on long leads. Right now this single transistor is driving every grid and every anode.
This entire circuit was designed from scratch with minimal power waste and the KISS design principle in mind, using only those parts available to me in my ITT Tech lab kit.
This took me about 6 hours to engineer from scratch, which seems silly when I look at the end product... it's so simple!
Where does all this all this design time go? Most of it goes into part selection, followed by prototyping, then building and polishing the circuit layout.
I think that might be backwards of how I'm supposed to be spending my engineering resources, but I'm working with a very limited part selection of active components so it's not as easy as using the cheapest, best, or most readily available part for the job.
Most of these simple "building block" circuits are documented beyond sufficiently in various texts or internet resources, and have plenty of algebra to accompany them for calculating their expected results.
Once I've determined what active components I'm going to use for my task, I then have to pick the best values for the passive components. This is where the real fun starts.
The amount of options you have at both the active and passive part selection stage is huge, choosing what to use for your application seems insurmountable.
I think this is a big area where my previous technician experience helps me, especially being around real working engineers and interfacing with them as they were designing products at NVision during my time there... even as minimal as my exposure to the engineering floor was.
If you see a KISS way to improve my circuit or want to see more measurements, let me know. The eventual end goal here is to get 13 more switching transistors going so I can use an arduino to print characters to my vacuum fluorescent display I've got here.
Improvements to come:
Current (and therefore heat) reduction (or regulation) for the two transistors I've used here. Not that I didn't spend several hours prototyping with different circuits and values to yield optimal results with the parts I had... I'm just always looking to simplify the circuit and reduce the power wastage.
-Ryan
Digital clock with 7-segment led-displays controlled by a attiny2313 on a breadboard.
More at blog.gut-man.de/tag/7-segment/
Two copies of the same circuit. The one on the right was done first, and is a pretty good rat's nest, if I do say so myself. The one on the left was built based on the other one, but with an eye toward clarity. Much easier to see what's going on! I guess that figuring out the layout based on a schematic is a skill that needs practice.
Any suggestions on how to keep things neat and easy to follow? (I've decided against the blue lines I drew on the one breadboard ... I thought they'd help me keep track of where the connections are. Turns out I don't need reminding, and the lines make it kind of ugly.)
Breadboard circuit for Sound Flash Trigger With Delay (Mk I)
My long absence from Flickr has been due to me devoting a lot of my spare time to re-learning electronics and learning how to develop software for microcontrollers.
This prototype circuit was my first attempt to build a sound trigger for my Canon Speedlites -- as I had modified my OC-E2 flash extension cable I was able connect directly to any of my Speedlites.
Unfortunately, I discovered that the timing ICs I was hoping to use (NE555) are just too slow to respond to the sound of a balloon popping. The shortest delay I could get out of them was roughly 2ms which just wasn't fast enough.
So my next move was to use microcontrollers, initial the PIC 16F628A, but I migrated to the AVR ATmega8. The AVR has an open source GCC development environment and the AVR are available here in Portland (Surplus Gizmos on Cornelius Pass just off of Hwy 26).
The circuit has five stages:
1) The audio amplifier using a LM386 OpAmp IC
2) A comparator to convert the amplified audio into a distinct pulse to trigger the timer delay circuit
3) The first timer (NE555 IC) which is the delay part
4) The second timer (NE555 IC) which generates the trigger pulse for the Speedlite
5) The opto-isolator (MOC3020 IC) which triggers the Speedlite, but protects both this circuit and the Speedlite. With this setup I could use an older hot-shoe flash which are notorious for running 300V between the hot-shoe pins.
Like I said, unfortunately this prototype was just too slow, but I learned a lot in the process.
Side-note: Canon Speedlites can't be triggered repeatedly with just an opto-isolater by itself. Due to some quirk in their design you have to add resistor and capacitor in parallel (to each other) to help reset the Speedlite after it is triggered. I used a 1M ohm resistor with a 0.05uF capacitor rated for 600V.
Ytterbium, enclosed in a water jacketed, filament heated molybdenum crucible, is heated to about 450°C to create an atomic vapor that sprays, well, everywhere. Some of the atoms make their way straight ahead toward our optical chamber to exploited as optical frequency references.
It's working much better since I fixed my goof.
I added four expansion slots to the board. There's a ribbon cable connecting one of them to a Motorola 6821 on a breadboard with a DS1307 real-time clock.
Code Liberation Foundation holding a night at NY Resistor to build an 8bit synth with a tiny breadboard, amps and fun. not exactly Moog fest but close enough for an evening of makers and curious onlookers.
I received the Arduino starter kit I ordered in the mail today. Here I'm testing it out by running a simple example program: when you push the little button on the breadboard, the LED lights up. It works! I've got ideas for making electronic musical instruments -- I've got a lot of tinkering to do before I'll have anything to show.
This is a fully Arduino-compatible setup based on the Arduino breadboard except with a USB to serial converter and an RS232 level shifter instead of the FTDI chip. I used the parallel cable I'd made previously to burn the bootloader, then I was able to program it and to communicate with it via USB. This was all done using the normal Arduino software on Linux.
I'm trying to build a minimal arduino with:
- Breadboard Mini Black (170 tie points)
- L7805 5V Regulator
- 10K Resistor
- 0.1uF Capacitor
- 2 Headers for Input Power
- ATmega168 with Arduino Bootloader and Blinking Led Example
As it gets nearer to the end of the semester, I seem to be gathering more days where the letter F appears a lot in my vocabulary.
Running out of steam, but only days away from the end of term fortunately.
Shown is our "Ashley" double pedestal made to be 38x78" with no leaves. It has a smooth 1 1/4" thick Maple top with Walnut plugs in the breadboard ends.
Coordinated with 4) Metro Ladder side chairs also in Brown Maple / Ebony #20 sheen
The square profile copper wire is hollow for carrying cooling water along with the ~120A needed to great a huge magnetic field gradient in the center of the optical chamber. When combined with polarized resonant laser beams, the large magnetic gradient forms a magneto-optical trap for capturing, cooling, and confining ytterbium atoms.
The 120A current in the coils must be switched off quickly (~30ms) before we proceed with spectroscopy. The inductive kick results in pretty violent vibration, which we try to minimize with a slick mounting scheme.
Our latest project was painting the dining room and adding breadboard wainscoting.
Five coats of "Raucous Orange" (Sherwin Williams) were applied!
A 21st century interpretation of William Penn’s “greene country towne” will appear atop the PECO Crown Lights as the first Art in the Air exhibit of 2011 opens Friday, Sept. 2.
"The Green and Growing City" was created by Timothy Wingert specifically for the PECO Crown Lights as an animation reflecting both the life and energy of the city as well as Philadelphia's leading role in making urban areas "green" and artistically integrated into their natural surroundings. This 30-second animation of nature's growth and life cycles seen on top of one of the city's prominent structures represents what William Penn's idea of a “greene country towne” is all about.
Wingert’s work will be shown alongside “Dancers” by James Simpson and “Cool Waves” by Chris McManus. All three pieces will be displayed on the Crown Lights each Friday in September from 7 p.m. to midnight.
Art in the Air is a partnership between Breadboard, a program of the University City Science Center that explores the intersection of art, science and technology, and PECO. The September artworks were selected by Breadboard and PECO.
New exhibits will be mounted in October, November and December. In January, PECO and Breadboard will select the “Best in Show” works, selecting up to three pieces featured during the four, month-long exhibits for a chance to receive a $1,000 prize from Breadboard.
“Art in the Air” was launched in 2010 during Philadelphia’s annual Welcome America Celebration, commemorating the first anniversary of the launch of PECO’s new energy efficient LED Crown Lights system. In 2010, PECO featured the works of more than 20 different artists atop the lights as part of the program.
Artists interested in submitting their work for consideration should click here or submit their work to artintheair(at)sciencecenter(dot)org. More information about the PECO Crown Lights is available at www.peco.com/crownlights.
About Breadboard:
Breadboard is a program of the University City Science Center that explores intersections between contemporary art, design, science and technology. Expanding on 30-plus years of Esther Klein Gallery programming, Breadboard's mission is to convene communities around creative applications of technology. Breadboard also manages the Esther Klein Gallery (now known as EKG) at 3600 Market Street.
A prototype reflow oven controller. A Teensy++ 2.0 provides an 8-bit AVR microcontroller to run the control algorithm. Two MAX6675 ICs provide two channels of thermocouple sensor readings. Two solid-state relays allow independent control of two high-power AC loads (the top and bottom heating elements of my toaster oven, in this case).
The whole PID control algorithm and temperature profile reside in and execute on the AVR (all implemented with fixed-point integer math). Still, I've also written a Python/QT GUI program that talks to the AVR (through a USB virtual serial port) and allows for plotting the reflow profile/sensor readings/SSR commands/etc. in real-time as the reflow operation runs.
Breadboard prototype of a 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.
You can either run wires between the BlinkM and Arduino, like on a solderless breadboard, as in (a), or you can plug the Arduino in directly as in (b). BlinkM plugs into the Arduino's pins 2,3,4,5. You can use the BlinkM_funcs.h library to turn two of those pins into a power & ground.
Notice the (Black, Red, Green, Blue) color coding of the BlinkM connections. I find this to be a useful mnemonic for remembering the order of BlinkM's pins.
I continue to be away from Flickr working on radio antennas and electric fencing.
Shown above is a trial assembly of switching relays that will allow selecting one of four antennas remotely with only a single cable running into the house. Even the signals that switch the relays run down the coaxial cable.
Locating the switching relays remotely places the lightning arrestors and earth grounds outside the house which keeps lightning-induced electricity out of the building. . (That was a problem with the old installation.) Thus, everything on the left half of the table has to go in a weatherproof box outside.
Two of the antennas are 40-meter wires fed off-center with coaxial cable. There's no possibility of rotating something that large, so I have one pointing north-south and the other east-west. The third antenna is a 10-meter-high vertical aluminum tube. As the saying goes, "It transmits equally poorly in all directions".
The fourth antenna doesn't yet exist, but I'll build it eventually. That's news to MollyRabbit. :)
There are notes on the picture.
My Raspberry Pi Zero controlling an LED. While the circuit is connected to a permanent power source, I have a python script that can turn the LED on for 10 seconds and then it turns off, using pins 11 and 14.
I found this harder than I thought I would, but it's still actually been really interesting.
Without a soldering iron, it's not easy to get things in place and I'm still getting me head around resistors again. The recommended ~300 ohm resulted in a very dull LED, but using a 1K resistor, I was able to get a nice and colour.
Using a small tripod I captured this on our coffee table. The cables are nice and snug in the breadboard but loose in the Pi Zero itself. Now that I've got this working, I want to get a row of LEDs working so that I can use this to flash some lights!
Not the first photo I had planned to share as part of my project 365, but here we are!
A 21st century interpretation of William Penn’s “greene country towne” will appear atop the PECO Crown Lights as the first Art in the Air exhibit of 2011 opens Friday, Sept. 2.
"The Green and Growing City" was created by Timothy Wingert specifically for the PECO Crown Lights as an animation reflecting both the life and energy of the city as well as Philadelphia's leading role in making urban areas "green" and artistically integrated into their natural surroundings. This 30-second animation of nature's growth and life cycles seen on top of one of the city's prominent structures represents what William Penn's idea of a “greene country towne” is all about.
Wingert’s work will be shown alongside “Dancers” by James Simpson and “Cool Waves” by Chris McManus. All three pieces will be displayed on the Crown Lights each Friday in September from 7 p.m. to midnight.
Art in the Air is a partnership between Breadboard, a program of the University City Science Center that explores the intersection of art, science and technology, and PECO. The September artworks were selected by Breadboard and PECO.
New exhibits will be mounted in October, November and December. In January, PECO and Breadboard will select the “Best in Show” works, selecting up to three pieces featured during the four, month-long exhibits for a chance to receive a $1,000 prize from Breadboard.
“Art in the Air” was launched in 2010 during Philadelphia’s annual Welcome America Celebration, commemorating the first anniversary of the launch of PECO’s new energy efficient LED Crown Lights system. In 2010, PECO featured the works of more than 20 different artists atop the lights as part of the program.
Artists interested in submitting their work for consideration should click here or submit their work to artintheair(at)sciencecenter(dot)org. More information about the PECO Crown Lights is available at www.peco.com/crownlights.
About Breadboard:
Breadboard is a program of the University City Science Center that explores intersections between contemporary art, design, science and technology. Expanding on 30-plus years of Esther Klein Gallery programming, Breadboard's mission is to convene communities around creative applications of technology. Breadboard also manages the Esther Klein Gallery (now known as EKG) at 3600 Market Street.
42 x 84 rectangle Table, 1 1/4" Thick , Breadboard Ends, Thumbnail Edge, Solid Top with New, Shaker Estate Legs, in Premium Walnut Wood, Natural Finish,
Some simple SATA breakout boards, designed to allow connecting the FMC-LPC to SATA adapter board to low-speed breadboarded circuits. It has a TXS0104EPWR 4-bit bidirectional level translator on it, allowing the 2.5V I/O on the SATA connector to safely interface with 3.3V and 5V logic.
The board also has individual LEDs for each bit - the support logic for which accounts for over half the parts on the board! It'll be worth it though, I'm sure.
Setup for testing some 4-pin square LEDS (aka super flux or piranha LEDs) on a breadboard.
For more info on my testing and thoughts on these LEDs, see my blog post: www.lungstruck.com/projects/superflux-piranha-led-testing/
Pushme Pullyou transistor experiments (with sound clip). Pictured here with a Germanium AC125 PNP transistor.