Msg to cvs conversion?

Is there any program out there that converts msg programs to msg files? I have googled it and no programs that were useful came up. Any help?

Question by schoonovermr 


What powersupply or charger should I use?

It is for a battery pack for a cordless drill made of good sony high drain cells from "died" makita packs. It is for another drill then makita. I found this bms: http://www.ebay.com/itm/Protection-Balance-Module-PCM-BMS-21A-for-5S-18-5V-Li-ion-Li-Po-battery-5S21W005-/321790566576? Should I use an Imax charger, or a regular notebook charger, about 19-21 volts? http://www.ebay.nl/itm/iMAX-B6-Digital-RC-Lipo-NiMH-battery-Balance-Charger-AC-Power-Adapter-PD1205-/291180722863?var=&hash;=item43cbb93aaf

Question by rnijland   |  last reply


Best Way of Boosting 7.4VDC to 12VDC? Answered

I need to power two stepper motors off of 7.4VDC, and am trying to figure out the best, most cost efficient way.  What type of DC booster circuit would be best for this application? Do I need any noise filter? If yes, what kind? If I understand correctly, Stepper motors need a constant current. Does this limit my selection of DC boosters/step up devices?

Question by RocketPenguin   |  last reply


i need a knex cv shaft, who can figure one out???

Okay for you knex ppl i need to figure out a way to make a cv shaft for knex, i got 4wd already i just want stearing now, i can post pics and stuff if someone can make the cv shaft?? :D :D

Question by aaronj   |  last reply


Camera Problem

I was hacking a CVS camcorder to work in the dark and after removing the IR filter, The picture became blury. Can someone help me? Please.

Topic by ry25920   |  last reply


Can you take the lcd screen out of a CVS Disposable Digital Camera? Answered

And take out other parts and use it for projects or would it not be compatible with an Arduino setup or other? The camera is only $18.00 so the parts could come in handy. Do they take the camera back? Ive never used it.

Question by crearc   |  last reply


I would like a solution for MIDI-to-USB-to-CV for analog synths.

It would be great to playback MIDI files as Control Voltages via the USB port. Any suggestions or possibly any already viable solution? I know there is a similar arduino project, as well as several MIDI-to-CV converters, but it would seem to be pretty straightforward to convert MIDI to Control Voltages output through USB. Any thoughts on the subject? Any existing solution? I seem to remember seeing a commercial product for this, but a homebrew version would certainly be welcome.

Question by  


Constant voltage AND constant current? Answered

Hi, smart people of the internet :) Is there a power supply or a converter that can be set on a specific voltage and current, and keep both constant at the same time? I looked at ebay converters like B3606, DPS5015, BST400 and the like. They all have constant voltage (CV) and constant current (CC) settings, but they can't do both at the same time. If for example the current being drawn is too high, the unit switches from CV to CC and drops the voltage as much as needed to keep the current constant. Is a simultaneous CC CV power supply even a thing? Thanks!

Question by Morgantao   |  last reply


Wireless Face Recognition Final year project? Need Help at the wireless part ?

Were using open cv for the face recognition part and we need a wireless interface between the computer and image acquisition device.  we originally planned on using matlab for the face recognition part but decided to stick with open cv ...... For the image acquisition device we wanted to make a bluetooth camera using a cmos camera and bluetooth modules . I need a suggestion if the project is possible and how to interface the system . Thanks  

Question by khowsrow   |  last reply


What is a constant current source?

I had some questions: What is a constant current source? How does a constant current source work? Do i need a cc supply for an led or would a cv supply work? Thanks :)

Question by qwerty156   |  last reply


max output current of cc cv led driver if i use leds in parallel?

I was thinking of using some 2w leds which i already have for home emergency lighting setup. I was thinking of using http://www.ebay.com/itm/10-PCS-Led-Driver-For-1w-watt-led-MR16-1X1W-3X1W-led-light-bulb-DC-12V-/191066699095?pt=LH_DefaultDomain_0&hash;=item2c7c767557 as the driver of the leds. And i was wondering if i could run 2 of the leds in parallel from that driver. i will be using a leatsink for each of the leds. So... the main question is how much current would each of the leds be reciving from one driver. will it be 350ma to each of the led or 350ma total to both the leds... ie 175ma to each led. Thank you

Question by bipl12   |  last reply


Pan Tilt Face Detection

HI I'M GETTING THESE ERRORS IN VC++ 2010, HOW DO I RESOLVE THIS? 1>facedetect.obj : error LNK2019: unresolved external symbol "public: void __thiscall Tserial::disconnect(void)" (?disconnect@Tserial@@QAEXXZ) referenced in function _main 1>facedetect.obj : error LNK2019: unresolved external symbol "public: int __thiscall Tserial::connect(char *,int,enum serial_parity)" (?connect@Tserial@@QAEHPADHW4serial_parity@@@Z) referenced in function _main 1>facedetect.obj : error LNK2019: unresolved external symbol "public: __thiscall Tserial::Tserial(void)" (??0Tserial@@QAE@XZ) referenced in function _main 1>facedetect.obj : error LNK2019: unresolved external symbol "public: __thiscall Tserial::~Tserial(void)" (??1Tserial@@QAE@XZ) referenced in function "public: void * __thiscall Tserial::`scalar deleting destructor'(unsigned int)" (??_GTserial@@QAEPAXI@Z) 1>facedetect.obj : error LNK2019: unresolved external symbol "public: void __thiscall Tserial::sendChar(char)" (?sendChar@Tserial@@QAEXD@Z) referenced in function "void __cdecl detectAndDisplay(class cv::Mat)" (?detectAndDisplay@@YAXVMat@cv@@@Z) 1>c:\users\auvsi2014\documents\visual studio 2010\Projects\facedetect\Debug\facedetect.exe : fatal error LNK1120: 5 unresolved externals

Topic by dnarayanan93   |  last reply


anyone have an idea for a good knex solid axle suspension?

K so i have ideas for everything else, can someone come up with a good solid axle suspension for a rock crawler out of knex, i also came up with a torsion bar ifs set up...if you can make a SMALL cv shaft i could make 4wd steering and indipendant as well, but for now i want solid axle! lol i just want to see how many ppl can do all this, steering idea would be good too!

Question by aaronj   |  last reply


UK internship (no longer) available

Anyone interested in a northern UK based internship ? We are an engineering design company, with many areas of expertise in electronics, software and mechanical design and manufacture, and our current crop of interns are returning whence they came.   We have some amazing projects coming up at the moment which will eventually look great on anyone's CV.  This is an entry level position, for which we will pay expenses only, for a suitable applicant to gain access to our tools and knowledge. We aim to have fun along the way. Internship available for 1 month, 3 months or 6 months, starting Mid-September or later. Steve

Topic by steveastrouk   |  last reply


MEng Project: Vision-Led SLAM

Hi, I know Ive missed this competition but I am about to start a big project and wanted to share my ideas with some like-minded individuals who may have some suggestions. I am about to embark on a 4th year university project involving doing something clever with an iRobot Create. I am looking towards approaching the problem of location recognition in mobile robots by attaching a command module and a webcam to the robot and using computer vision (CV) methods to identify landmarks. I thought an interesting goal would be to get the robot to map a floor of my department building. After that it might attempt to classify distinct rooms. There is a white board on the wall of a corridor that the robot could potentially locate and possibly draw on with the use of a robotic arm. The ultimate goal of this project could then be to get the robot to draw a map of the floor on the white board (perhaps a bit excessive). I am aware this project would involve implementing SLAM, integrating the map data with feature information from CV-processed real-time images and developing some kind of recognition determination model (i.e. neural networks or something). After that I clueless. I have never even looked at a robot before, but Im really excited about finally having a go. I would really appreciate it if anyone has any thoughts or relevant experiences or warnings :) then please let me know! Also, any other ideas for what I could do with the iRobot, a camera and 6 months ;) Cheers, Tom PS Ive never seen this site before and it is awesome! I want to read everything :D

Topic by hungrytom   |  last reply


Metal eyeglass arms have lost their coating, what to use to re-coat them?

Hi and thanks for reading my question. I wear reading glasses and have had some pretty good luck with a pair that I purchased at CVS approximately four years ago. The only thing that has went wrong is that the clear-coating, that used to cover the inside of the glass's "arms" has worn off, from the rubbing of the inside of the arms against my head as I put the glasses on and take the glasses off. Does anybody please have any suggestions about what I should use to re-coat the arms of my reading glasses? Thanks again for reading my question and thanks also to anybody that can please offer me any suggestion(s)! Dan

Question by iamuser1   |  last reply


Cultivate the Holistic Methodologies of the Database Application Facilitator

One of the things I get inflicted on me more and more frequently as I wander dazedly through the corridors of school management iss the buzzword.Already rife in the corporate version of reality, they're the words that numpties use to fill what should be a contemplative moment, or to cover a chasm of ignorance.It is beginning to look like we are in an increasing syllabocracy - the world is ruled by people who use long words.But, have no fear. I have come across two tools to save your sanity.The first is Buzzword Bingo - every time you visit, it generates a bingo card of buzzwords to be checked off during a meeting. Tell your colleagues, and each take one into the next concept cascade meeting you go to.When you eventually get caught playing, you will possibly need to update your CV. "Computer technician" is so boring - use the Techie Job Title Generator to come up with a more impressive way of entitling your functionality.Via: New Scientist

Topic by Kiteman   |  last reply


Instructors Wanted - Circuit Bending, Creative Electronics, Arts, Crafts, etc... (Williamsburg, Bk)

We are seeking p/t instructors for various classes to be held at our location.  We are looking for instructors who are knowledgeable, creative, patient, and experienced in the classes they will be teaching (either professional or self-taught). Hours vary, but primarily consist of evening and weekend scheduling.  Pay is based on level of experience, class type, and class schedule. - Circuit Bending (Basics to Advance) - Creative Electronics (Basics to Advance) - Arts & Crafts (all levels) - Electronic Repairs / Service / Test / Troubleshoot (Basics to Advance) We are conveniently located in the Williamsburg Brooklyn (Broadway @ Marcy Ave), @ the Marcy Ave J, M, Z stop. Please include the class you'd like to teach, your experience level, relevant degrees, affiliations, any resumes/cv (professional and/or self taught) and a sample curriculum (can by on anything).  We also need to know your availability, and salary requirements. Thank you for your interest. TERMiNAL 347.725.0343 terminalbrooklyn (at) gmail . com

Topic by terminalbrooklyn 


What kind of code or cipher is this?

I'm working on a puzzle and can't identify the type of code this is.  I'm not looking for somebody to solve it for me, I just want to research it and learn how to solve it myself.  I can't really do that until I know what I'm dealing with and various Google searches have turned up no information of value. This is a small portion of the code and I have no additional information or clues: BT RK RV YC NP GZ YY AA LS HZ NL RR ES IC AN BF RG SS EU VD NF YC SS RH MH MH MH MH MF HN LS HO GY YV UG IC AS GK BT LS HG AD LS HP CV NT There are 95 groups of 2 letters each.  I have tried a couple of things which have not given me any result. I'd really appreciate any kind of information as to what I'm looking at.  Thanks!

Question by iPodGuy   |  last reply


Awesome Idea for a Hack but need LCD know how.

Hello there Everyone! I am trying to Do a project where I can use Small LCD screens (perferably a CVS disposable camera 1.4" TFT screen) The problem is I'm not quite sure how to go about hooking them up to a RCA, or S-video input. My whole project hinges upon me getting a good LCD or OLED monitor as they need to be fairly high quality. I cannot seem to find many small LCD or OLED suppliers out there so I am hoping this can be done with the disposible. I would also like to ask if anyone does have information on where to buy small, detailed LCDs that can receive RCA. I considered using a cell phone screen but it seems that you need to break down an analog RCA input and digitize it to be viewed on the screen, something that needs a beefy micro controller and programing knowhow, of which i have neither. Please lend a hand, and you may see my first instructable, of something rather awesome.

Topic by TheBestJohn   |  last reply


Adding Mic Input to a Flip Mino Camera?

I was looking to add a microphone input to my lilliputian Flip MinoHD. My current thinking is that I could just take the leads from the current, built-in, mic and run them to a two-position switch. From there I could then have a 1/8" input on one side of the switch and the original mic on the other. Then it would all be a matter of dremeling out a small spot for the input and the switch on the side of the body so that I could select which input to use.First of all, I'd like to know if that would even work. I've done electronics work before, but have never worked with mics, so for all I know I might just walking down the pathway to a voided warranty and a bricked Flip.Secondly, I was wondering whether there might be a method of bypassing the need for a switch, so that if there was no mic present the camera would use the built-in mic, and if there was, it would use the input.Any help would be greatly appreciated. I was a big follower of the original CVS camcorder hacking movement, and I'd love to see the Flip get the same sort of treatment.Thanks.-NickPS: Does anyone have any pictures of the internals of the Flip MinoHD? I've been looking around but can't seem to find anyone who's dissected theirs.

Topic by foxymcfox   |  last reply


Looking For Instructors - Circuit Bending, Creative Electronics, Arts, Crafts, Painting, etc... (Williamsburg, Bk)

NO EXPERIENCE NECESSARY - Just be EXCELLENT at what you do, and be able to teach others your skill(s)! We are seeking p/t instructors for various classes to be held at our location. We are looking for instructors who are knowledgeable, creative, patient, and experienced (either professional or self-taught) in the classes they will be teaching. Hours vary, but primarily consist of evening and weekend scheduling.  Pay is based on level of experience, class type, and class schedule (ranges from $40-100/hr). - Circuit Bending (Basics to Advance) - Creative Electronics (Basics to Advance) - Arts & Crafts (all levels) - Electronic Repairs / Service / Test / Troubleshoot (Basics to Advance) - Painting - Sewing / Embroidery - Jewelry Design / Silversmithing - Printmaking (lithography, dies, monoprinting, etc) You get the picture! We are conveniently located in the Williamsburg Brooklyn (Broadway @ Marcy Ave), @ the Marcy Ave J, M, Z stop. Please include the class you'd like to teach, your experience level, relevant degrees (not required, but a +), affiliations, any resumes/cv (professional and/or self taught) and a simple sample curriculum (can by on anything).  We also need to know your availability, and salary requirements. Thank you for your interest. TERMiNAL 347.725.0343 terminalbrooklyn (at) gmail . com

Topic by terminalbrooklyn   |  last reply


Exploratorium's 2nd Skin: Call for Artists

Hi Instructables community - Do you work in wearable computing? 2nd Skin will be showcasing works that fuse fashion, technology, and art to address life in the 21st century on April 25th at the Exploratorium. This call closes Friday, February 29. Thanks for your time! -Jessi ~Call for Artists: 2nd Skinhttp://www.exploratorium.edu/2ndskin/The Exploratorium invites artists creating wearable computing, wearable art, or related performances to submit works for 2nd Skin: Imaginative Designs in Digital & Analog Clothing. This exhibition features works that fuse fashion, technology, and art to address life in the 21st century. Existing or proposed works in all media are welcome, including fabric, soft-circuitry, found-object, video, installation, and performance. 2nd Skin opens Friday, April 25 at the Exploratorium in San Francisco, CA. The opening night celebration will include performances, a runway show, and installations. Select works will remain on display through Sunday, September 7, 2008. Participating artists will receive a modest honorarium.To apply, please submit: 1-5 images (JPEG or PDF under 1 MB/ea) or URL link Brief statement (1-3 paragraphs) describing the art and concept behind it Artist resume / CV Estimated costs for shipping, fabrication, or installation, if anyPlease email submissions to Pamela Winfrey, Curator/ Senior Artist, at pamw@exploratorium.edu.Deadline: Friday, February 29, 20082nd Skin WebsiteExplOratorium2nd Skin Press Release

Topic by JessiJ 


Call for Participation: 3lectromode - DIY Wearables

3lectromode is looking for designers/programmers interested in doing an internship to co-develop future D-I-Y projects. In particular, we are looking for fashion designers skilled in pattern making with an interest in textile design and programmers interested in further developing the Arduino platform for wearables. Respond before May 1 w/ cv & portfolio. Founded and directed by designer-artist Valérie Lamontagne, 3lectromode holds the vision of innovating in the field of wearables by combining technology with customizable prêt-â-porter fashion. We aim to inspire a future where wearables are democratized, aestheticized, and performative. We are a small design group interested in developing accessible wearables which combine D-I-Y technology with current fashion research. We are fascinated with the potential for technology to create new modalities of interaction between the body and its environment, and are interested in the performative potential of technology. Key to our design ethos is a to create a library of open sourced tools which can be used easily by anyone. We develop wearables which we hope will be meaningful to the wearers by enriching everyday experiences with an awareness of both ourselves and the world around us. We see our work as creating a further connection between humans and the world at large of machines, information patterns, environmental data, and organic material. Associate designer at 3lectromode is Magalie Coulombe-Noël, a trained fashion designer and technologist. Fellow collaborators include: Elio Bidinost, physical computing expert; Claudine Lamothe, web programmer and technologist. 3lectromode was founded in 2010 and is located in Montréal, Canada. Contact: valerie@3lectromode.com 3lectromode: democratized, aestheticized, performative wearables. 

Topic by 3lectromode   |  last reply


Interactivos? @ Eyebeam: June 26 - August 9

Interactivos? @ Eyebeam: June 26 - August 9Better Than the Real Thing: Call for CollaboratorsMay 30: Call for Collaborators Deadline | June 3: Notification of acceptanceWe're pleased to announce that we (Eyebeam fellows, residents and staff) have selected nine projects--from the 60-plus submitted applications--to be realized during a two-week workshop in late June.But we need help, and that's where you come in. We are now recruiting collaborators--artists, engineers, musicians, programmers, designers, and hackers--to help bring these projects to life. While this position is unpaid, it is an opportunity to work with international artists including current Eyebeamers Zachary Lieberman, Taeyoon Choi, Jeff Crouse, Friedrich Kirschner, and others. Collaborators will participate in skill-based workshops, and attend public lectures and associated events, and be an integral part of the production of exciting new interactive projects. The completed projects will be included in Eyebeam's Summer 2008 exhibition. All collaborators will be credited in the exhibition for their roles in the realization of the projects.To be considered, send us a letter outlining your skill set and what you think you could contribute to the workshops, with a CV (word documents or pdfs only please, no image attachments) to interactivosinfo AT eyebeam DOT org by May 26. Selected collaborators will be notified May 29.Interactivos? was initiated two years ago by the Medialab-Prado program and the Madrid City Council. This is the first time it has taken place outside Spain.The full list of projects, and further detail on the kind of collaborative help we are looking for, can be found here:Interactivos? @ Eyebeam: June 26 - August 9

Topic by ewilhelm   |  last reply


Job opening at MIT working on wireless sensors

Thought I'd pass this along in case there are electronic hackers looking for a job. Unfortunately, you need at least a master's degree.Post Doctoral Associate or Research ScientistMassachusetts Institute of Technology, Cambridge, MAIndividual will work under the auspices of the House-n Research Group to contribute to the development of a hardware and software system that will measure physical activity type, intensity, and location in very large populations of adults using ordinary mobile phones (see http://web.mit.edu/wockets). Responsibilities will include developing and field testing wireless accelerometer technology that sends data to mobile phones, extending past work at MIT, developing housing for those wireless sensors so they meet a set of design constraints identified by prior research and so they can be easily produced in prototype and larger quantities, writing academic papers on the design and use of the technology for healthcare with colleagues at MIT and Stanford, fostering an open-source community of developers to use and extend the technology, and collaborating with other researchers working on developing technologies for the NIH's Exposure Biology Program. The appointment will be for one-year. Minimum Qualifications:An M.S. or Ph.D. degree in Electrical Engineering or Computer Engineering (or closely related subject), with expertise in embedded systems design (hardware) and RF design (e.g. Bluetooth or any other RF protocols used in sensor networks). Microcontroller programming and knowledge of interfacing microcontrollers to analog and digital sensors is required. The candidate must possess 1-2 years of research or development experience designing, prototyping, testing and debugging electronic circuits, and the candidate must have past experience demonstrating the ability to independently develop wireless sensors from conception to manufacturing to enclosure design. Expertise in rapid prototyping of enclosures, pattern classification algorithm development, and/or ubiquitous computing helpful. Interested candidates should send a cover letter indicating why they are interested in the position and a CV/resume to intille@mit.edu. Please indicate earliest date of availability.

Topic by Vsayuni 


European Voluntary Service in Netherlands

European Voluntary Service (EVS) is an Erasmus+ program for young people (17-30 years old) who want to spend a long time living in a different country and with almost all the cost paid: apartment, wifi, transport, food... Bataviawerf (Lelystad, Netherlands) is a dockyard with special ambitions. Ships from the golden century which has been important in our maritime history, are reconstructed here. Our organisation is depending on the work of volunteers for some years already. A lot of foreign volunteers helped to build the ship “Batavia” and are now helping to build the new ship “Het water schip”. The Bataviawerf could not exist without the help of numerous volunteers which help in showing everybody the way of building ships in the 17th century. We are seeking for 3 new EVS with the next profile: Tasks Create technical drawings, finish the 3D Digital Model of the Batavia, create nice videos and photos about the Bataviawerf and handwork (rebuild some parts of the Batavia -mast, yards, etc.-, forge, wood work,...) Criteria Technical background with knowledge about SolidWorks, AutoCad and similar or experienced in graphic, digital and multimedia design (Adobe Premiere, InDesign, etc). Also creative, self-motivated and interested in shipbuilding and handwork. Procedure If you are interested and you think your profile is suitable for one of our tasks, send us your CV and a motivation letter to the email: evsbataviawerf@gmail.com More information We are seeking for 3 new European volunteers for the next periods: 1) From August 2016 to August 2017. 2) From September 2016 to September 2017. 3) From December 2016 to December 2017. This voluntary service is available for young people from the next countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Greece, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Poland, Portugal, Romania, United Kingdom, Slovakia, Spain and Sweden. (More information about EVS: http://europa.eu/youth/node/73_en)

Topic by Bataviawerf 


LED Circuit Design?

I'm a Mechanical working in the LED field. I'm trying to design a LED circuit with the little knowledge I have. Here is my circuit in a nutshell: 3.2 Vf typ - 3.6 Vf MAX -.150 mA 24 volt CV PS supplying 3.3 A 7 series in parallel with 22 chains I calculated using typical Vf as the following: 24/3.2 = 7.5 devices so I rounded down to 7 devices in a series chain. 7*3.2 = 22.4 volts required 24 supplied - 22.4 volts = 1.6 volts to dissipate. Resistance = 1.6/.150A = 10.67 ohms Wattage across resistor = 1.6*.150 = .24 W So I found a SM resitor 10.7 Ohms at .25 W. I have a concern with Vf variance. Would this circuit not work if I get Vf's higher than 3.2 Vf? So if I change my circuit to 6 devices per series chain I need 19.2 volts and need to dissipate 4.8 volts. This just seems like a waste.I still do not understand Vf variance. If I design for 6 and dissipate 4.8 volts with a resistor - won't the series chain be starved if Vf goes higher? So how do you accommodate this variance? I just have worries about this design - regardless if I design for 6 or 7. I know some about LEDs but I do not know what happens when I get Vf variance. Does the resistor go at the end of the series circuit? If this is the case then I understand how variance in the circuit would be able to use available voltage - and then the resistor is at the end to disipate what is left over. I've heard concerns that I'm not allowing for more head room #i.e. doubling the resistor value and wattage requirements). If I double the voltage dropped don't I take this away from the LED circuit possibly starving it? I have always assumed the resistor goes at the beginning of the circuit - regulating the current/voltage prior to it entering the LED series circuit.?

Question by oharag   |  last reply


Smart amplifier design building blocks help? (making an amp w/ auto-volume adjust by controlling gain with running avg)

I am currently working on a simple headphone audio amp that automatically adjusts volume to my preference, regardless of what video I click on when it is plugged into a computer. I am tired of some video's being so quiet that I have to crank up the volume to overdrive to hear it, while other video's blast out sound and burst my eardrums. And of course when watching photonicinduction videos, he often can be hard to hear his voice at really low volume at like 12 at night when everyone is asleep, but then the sparks and hammers come into the picture, it is often too late to crank the volume back down, and thus makes your ears bleed or waking everyone up in the neighborhood! X-(. (Luckily he has included sound warnings, but I am lazy, and will engineer things that do the hard work of adjusting volume for me! :)   ) In a way, I understand that this will minimize the dynamic range, which I suppose hardcore "audiophiles" will go NUTS over me actually WANTING to do that, but none the less, That is what I want. My design currently is just a simple emitter follower with a NPN and PNP transistor is the class AB operation, and to minimize crossover distortion and give a definite gain, I have negative feedback op amp from the output of the totem pole transistor arrangement back to the inputs that feed the base of the low and high side transistor. (obviously, the transistors by themselves are low impedance output, (CV mode) and high impedance input, and have a gain of like 1.) Sorry, no schematics, but you capable of googling it if you want to see what I am describing. As it is, it works fine. HOWEVER, it does not do the automatic volume, or gain control. That is set in stone by a resistor divider network between the feedback and ground (the basic non inverting amp feedback config.) I do not want a fixed gain. I want a electrically adjustable gain. The thing I plan to use to do the automatic adjustment would be a peak detector on the input, which is probably going to be a simple diode and capacitor with a buffer, and a discharge resistor (or constant current drain) across the capacitor to gradually lower the max output, or possibly an integrating op amp that effectively takes a running average. The output of that needs to control GAIN of the primary amplifier, and I want to be able to control the PID of that thing, maybe by tuning the a LCR circuit, or what have you. It is all nice and analog, just the way I like it! :) If ONLY there was some magical (and common) component that I could control the resistance anywhere in the feedback loop, of with a given voltage w/ respect to ground... I was thinking of like a MOSFET, but I would have to deal with the non linearity of the input vs output impedance, which probably changes with respect to everything from the current flowing through the channel, the voltage relative to ground at the source, the temperature, the alignment of the planet's, what mood god is in, etc etc etc. That is too many factors for an open loop control on to model in discrete stuff! And digital potentiometers are out of the question since, well they are digital, I want an elegant simple solution, and the are $$ and difficult to deal with. They have so many requirements that need to be addressed.  I prefer a elegant discrete transistor circuit, but op amps and other basic building blocks are acceptable, (this thing I want to be built over a weekend with with jellybean parts from by junk bin.) if you happen to know of a specific audio chip that does this for me, please mention it, but I will probably not use it, but maybe analyze the internal circuitry and learn how it works.

Question by -max-   |  last reply


should I give up on entering contests/posting detailed unique ideas?

Disheartened by contest results, I really feel like pulling some of my instructables and not publishing any further ones (I am taking some time right now to work on another project I was documenting for instructables but I feel like there isn't a point to the extra time involved in pausing to take pictures of every little thing).  It probably seems silly, but I did end up shoving a whole bunch of my priorities aside to make sure it was in before the deadline. My original idea was not among the top 5%, some of which were things I could buy derivatives of in a store or have definitely seen before.  I guess I am just looking for affirmation that this is a pretty commonplace occurrence, and as a first time contest entrant that eventually something will pan out and I'll wind up with a tshirt (I mean that's pretty much all I want out of the deal, the prizes are nice but the tshirts are cooler. not that anyone would really ask about them, but maybe when I visit geek-saturated areas...) if I keep trying.   Perhaps I was too confident and it takes way more than 50 hours to make a winning instructable (through all my trials and errors, it might have been more than 50) You could tell me that my pictures or use of language were not as good as the others, but I am pretty sure I have a decent command of the English language and most of my photos were ok, with the exception of having a few from a cellphone, in the dimly lit space I had to work in.  Granted, those steps were so self-explanatory others would've just added them as a sentence i.e. "Cut the chain".  I also went through the other entries, also from last year, and was pretty certain I'd place. Could ascribing it as "NoDerivs" possibly have anything to do with how the sponsor judged it?  I just don't want someone using their modified idea for an NGO without considering consulting me, I am only partially employed and am looking for that kind of employment, even being consulted without pay would be a CV boost at this point.  I could care less how many people make it for themselves or other groups in their backyards, as long as they aren't selling the idea or trying to one-up me.  Perhaps I should consider a different license attribute and just write in plain text what I mean by it? How does everyone else network to get people to vote for their entries? When your instructable is complicated, how do you shorten it enough to make sure people of all levels can understand?   Do a few cellphone pictures in an instructable of many photos ruin it (I don't always have a camera on hand and until super recently I didn't have an SLR as mine was stolen in Peru - I had to borrow one for some of my photos)?  Not as many people seem to like my most complicated instructable, so I wonder if length or complexity factors in... Do you think length factors into contest decisions?  Because my next project is also long, as unique ideas often are.  And I don't want to skip describing details and just say "put the capacitor in" or "build a rectifier circuit" when, since I started building circuits this Fall (partially thanks to instructables), I would have wanted to know details like to bend legs of a capacitor if I was following an instructable, and I was super confused by an instructable (a featured one at that) that said simply "build a rectifier circuit".   Sigh, I guess I am just bitter that I won't get one of those awesome tshirts. should I post the next idea on instructables once it is completed or not?  Or are ideas like that generally not appreciated in this community?  (hint: it is similar to the light up swing powered by a bicycle dynamo I posted, but implements another piece of playground equipment instead).  Perhaps I should just keep them to myself until I've built them beyond working prototypes?   Sorry for all the questions and being a Debbie Downer, I am just reflecting on what could have factored into my entry not having been selected as one of the top 25.  I was pretty sure it was at least in the top 10 or so.  If I am going to improve on future projects, I want to know what I should consider focusing on, and if complex projects don't really belong here (or if others have good ideas on how to shorten them).  Thanks all.

Topic by danja.mewes   |  last reply


Open Call: Pier 9 & Market Street Prototyping Festival Keystone Project

MARKET STREET PROTOTYPING FESTIVAL OPEN CALL Autodesk Keystone Project Call Opens: July 11, 2014 Call Closes: September 2, 2014 Shortlist Interviews: September 17-19, 2014 Proposal Selection: October 1, 2014 CALL SUMMARY: The San Francisco Planning Department has partnered with Yerba Buena Center for the Arts (YBCA) to produce the Market Street Prototyping Festival: an innovative, hands-on, publicly sourced approach to creating the next chapter of San Francisco’s public life. The Market Street Prototyping Festival builds upon a five-year, multi-agency effort for a Better Market Street to re-establish San Francisco’s civic spine as a place to stop and spend time, meet friends, people watch, or just stroll and experience the scenery. As a formal piece of the planning process, the Prototyping Festival will commission and exhibit up to 50 design projects that aim to improve lives by improving public spaces. Each of the selected prototype projects will be installed on Market Street for the full duration of the three-day festival, which will take place in April 9-11, 2015. Matched with one of five Festival Districts on Market, selected teams will work directly with community members to shape the direction of their designs. The call for applications for those 50 projects is currently open and will close on September 2nd, 2014. More information on that process can be found on the Market Street Prototyping Festival website. Market Street will be broken out into 5 districts along the corridor: Civic Center, Central Market, Retail, Financial, Embarcadero. Each district, or "Block," will be represented by a Block Captain. Each Captain will mentor 10 selected prototyping teams and will be responsible for developing their own Keystone Project that will serve as the primary focal point for each district. As the Block Captain for the Embarcadero district, Autodesk is seeking proposals from engineers, industrial designers, architects, artists, and interactive designers for a large-scale Keystone Project to serve as a physical, visual and social anchor for the Embarcadero section of the festival. While there is no official theme for the festival itself, the Autodesk Keystone Project should relate to the ethos “Inspire, Design, Create.” Additionally, it should connect to the character of the Pier 9 Workshop where artists, designers and fabricators are empowered to test the limits of existing technology, both digital and mechanical. Special consideration may be given to projects that incorporate the following themes related to place-making and the unique social and spatial conditions of the Embarcadero district: • site specificity: social, cultural, geographic, and civic histories • connecting digital and physical realms • daring experimentation/playful prototyping • edge condition: city + waterfront • wayfinding and transportation networks LOCATION: Over the course of the festival, the city anticipates foot traffic of over 300,000 visitors. The Keystone Project may be installed anywhere within the festival’s Embarcadero district, which starts at the intersection of Market and Spear Street, extending to the traffic island at Embarcadero and Market, possibly including Jimmy Herman Plaza. See the map on the Market Street Prototyping Festival website for more details and note that Autodesks main San Francisco office is located at 1 Market. PRECEDENTS: The following projects are examples of what the application review committee is looking for in terms of scale, tone and available resources. These samples are meant to serve purely as a reference and are not works that will be featured at the festival. - Sukkah City, Various, New York - 21 Balançoires (21 Swings), Daily tous les jours, Montreal - Light Drift, J. Meejin Yoon, Philadelphia                 (Note: Projects for the 2014 Urban Prototyping festival cannot be installed in the bay.) - Digital Empathy, Julianne Swartz, New York LOGISTICS, EXPECTATIONS, AND SUPPORT: The selected project and team will be fully supported by the Pier 9 Workshop! We look forward to having you join our creative community of Artists in Residence, other Creative Projects Teams, and the folks who make Instructables.com go. We provide ample opportunities to collaborate with other designers and makers, to receive training on any of the machines in our workshop, gain software support for all Autodesk products (including free software licenses), and call upon the expertise of our fantastic Shop Staff. We can supply a modest office workspace and 24-hour access to the workshop. All basic workshop supplies will be covered, including hardware, sheet goods, finishes, and prototyping materials. Additional funding will be provided at an amount to be determined. We expect to support an innovative and inspiring project that reflects the use of our world-class facilities, at a scale similar to the precedents listed. For more information on the amenities available at Pier 9, see the Pier 9 Overview and Machine Catalog Instructables. Your project will also receive support from Autodesk’s public relations team, marketing team, video and photo documentation team, software specialists, and workshop fabrication specialists. There will be an expectation that you will work collaboratively with all of these groups to share the progress and product of your work. Finally, we have an Advisory Committee representing expertise in areas of landscape architecture, sustainability, and digital fabrication that can be called upon for consultation and critical feedback at particular points in the project timeline. The selected artist or team will be expected to formally share their progress throughout the development and fabrication process with the creative community at Pier 9 and beyond. This includes: • posting Instructables related to the making of the project • 2 presentations to the Advisory Committee for feedback • 1 lunchtime presentation to the full Pier 9 community, near project completion TIMELINE: July 11, 2014 —RFP Release July 22, 2014 —12pm lunchtime RFP Info Session at Pier 9 September 2, 2014 —Proposals Due September 17-19, 2014 — Semifinalist interviews October 1, 2014 —Keystone project announced October - December, 2014 — periodic consultations with members of Advisory Board Early December, 2014 — Presentation and critique with the Advisory Board Early February, 2015 — Follow-up presentation and critique with the Advisory Board 2 weeks before festival —Dress rehearsal (deadline for full assembly and functionality) April 9-11, 2015 —Installation and three-day festival presentation APPLICATION REQUIREMENTS: - 1 page statement regarding the concept, siting, and fabrication strategy for your proposal - Up to 5 photos/videos of mock-ups or prior work - CV including exhibition history (if applicable) - Proposed budget outline (Please include direct costs, materials, artist fees, contractors, and any additional project contributors or contractors) - Draft project calendar including proposed dates for prototyping workflow, workshop production time, completion time(s), and out-of-town dates (if applicable) - List of anticipated machines and materials needed ABOUT PIER 9: Autodesk’s Pier 9 workshop is a world-class fabrication facility on the San Francisco Bay. The Artist in Residence (AiR) program gives artists, designers and Instructables authors a chance to work with us in our lab and workshops to explore, create, and document innovative projects with our tools and resources and share them with the DIY community. AiRs are invited to come for a period of several weeks to several months, during which they will work on projects that are shared across the Autodesk Studio Communities. The primary goals of the residency program are to produce top-level inspirational content and to connect innovative and creative individuals with our unique set of tools and resources. Questions and inquiries are encouraged. We look forward to learning more about your work. Please submit applications with all materials compiled in a .zip file titled with your project name to: P9PublicPrograms@Autodesk.com. ADDITIONAL RESOURCES: Market Street Prototyping Festival Homepage Autodesk Engagement Announcement Pier 9 Overview Pier 9 Machine Catalog

Topic by brinstructables 


Zombie RPG / D&D Style Game

For ZSDW: I've been in the zombie hype for awhile, (about a year ago,) and after finishing a couple of Zplans, I decide it would be fun to kill some zombies with dice and statistics. Alas, this is quite the beta, and it generally uses d6's, as well as some skewed grammar and stats. First things first. You are not a specified character. You have no character sheet, you have no special abilites. The following few paragraph will explain a few confusing things, and give hints on how your location will affect your game. Then, there will basic weapon stats. Later, there will be about how zombies affect you, and what kinds of zombies there are, and their health. You will also learn how you can scrounge for stuff from bodies.  Subdivide means to roll for what section it is applicable for. Say your about to go into a room, you would roll for SURVIVOR and ZACH Room check. Say you get a four(4). That means there is something in the room. You would then decide if it was locked. (Unnecessary, but for extra gameplay, most are going to be locked. Hit the lock with something, and roll for it's regular attack. If the attack is successful, you broke the lock. If not, well, you may have to literally blow up the door, or say that you cannot go into the room.) Let's say no lock for times sake. Now, you know something/someone is in there. Subdivide by rolling what it is. Second line of Survivor and Zach Room Check shows this. Luckily, you roll a one(1). That means a Military person is in the room. They can have Assault Rifles, Submachine Guns, Rifles with Scoped subclass, And Scatterguns with the Breacher Barrel subclass. You can only find them in Military bases, Start Variable Location:Warzone, or ALERTNESS Yellow or higher. When moving through a house, roll for room encounters. You may roll for how many rooms you must go through,( If I roll 5, I need to go through 5 rooms before getting out, or to destination around/in house) so you must roll for encounters/room searches while in those rooms.(You would roll 5 times in this case for People and Zach Room check rolls.)  In a house, you may roll for RUN, so 1-2 success, and go to the next room. 4-6, unsuccessful, roll for Scratch. (1-3 Scratched, 4-6 safe.)   ALERTNESS is just a guide for what zombies are available to kill. The ALERTNESS bar is unnecessary; however it adds another angle to the game. It is at the back of this guide.  Ideas, Tips and Otherwise: Tanks, APCs, Pickups, convenience stores, Molotov Cocktail, Improvised weapons, have some fun, and add to this game! Make up some weapons, apply variable splash damage, and just make sure you kill some Zach!   Your start variables should be placed on a separate sheet, for reference. Say for location you picked rainforest/jungle, (your geography, weather, and season fits that description.) you will need/want to roll for Scratches more. (For realism, generally, there will be more crawlers, same with Aristriked Urban.) Same for Urban, and Airstriked-Urban, (Broken buildings, rubble, etc.) or Warzone. (More military personnel. Tanks? Have some fun! :)  START VARIABLES (At the top of the game sheet.) Location: Geography: Weather: Season: # Zach's: Zach's Location: Population Density: Specialized Setting: Attack Rolls: Locks (Y/N): Scratch (Y/N): Alertness Level (Y/N): Supplies (Y/N): Leg Break (Y/N): Travel Days (Y/N):   Supplies is a form of food, ammunition, and other necessary items for a single day. Each survivor in your current group takes 1 supply per day. Supplies can be found by subdividing if your preceding ROOM SEARCH roll is 1-2. If Travel Days is active/applicable, your group takes only 4 supplies per day, individual people in your group do not take any supplies, and you cannot be attacked by Z's. Travel Days are good if you have more than 4 people in your group, and have low health, or need to get somewhere. BITES are fatal, you take 3 supplies when bitten, then the following day you become a Z. Your group can take your weapons. SCRATCH'S are non-fatal; you take 2 supplies for 3 days. (7supplies, because of the one you took the day you were bitten, then the 6 you will take for the following days.) For all melee attacks, roll for bone breaks. 1-2 break, 3-5 Scratched, 6 safe. Scratch disables RANGED and FIREARMS attacks. For disabled, or failed melee attacks, 1-2 = arms, or arm, 3-4 =legs, or leg, 5-6 = chest or neck break. A Neck Break Disable turns Zach melee attacks to 2 bitten, 1 and 3 scratched, 4-6 safe. Arms/Legs breaks decreases that zombies fighting ability to 2 bitten, 1 and 3 scratched, 4-5 safe, 6 breaks leg of human.  When a human has a leg broken, he/she takes two supplies per day, and halves the amount of current PTD. (Play Time per Day)   To determine the time a day takes to complete, roll for the PTD, or Play Time per Day. This is found by rolling a 6 sided dice, then multiplying the number on the dice by 3. This is approximately how long a "day" is in the ZRPG, in minutes. You will need a watch or timer to play this game, if you want to apply PTD.  FIREARMS Scattergun(Shotgun) = 1-3 hit, 4-6 miss, Melee 1-4 hit, 5-6 disabled. RANGE:3 This affects a maximum of 3 Zs. Roll for 1-2 1 Zach affected, 3-4 2 Zach affected, 5-6 3 Zach affected. Sub-Class: Breacher Barrel, 1-2 hit, instant death upon Z's, breaches locked doors/drywall (Apartments, this happens if you like to shoot stuff, or the lock you just suck at opening wont unlock,). Pistol = 1-4 hit, 5-6 miss. RANGE: 4 Melee 1-3 hit, 4-6 failed, if failed, roll for scratches, Z is disabled if successful hit. Subdivide for disable type. RANGE: 1 Sub-Class: Laser, 1-5 hit, 6 miss. RANGE: 5 Rifle = 1-4 hit, 5-6 miss. RANGE: 10 Melee 1-2 hit, instant kill, 3-5 disabled, 6 scratched. RANGE: 2 Sub-Class: Sighting-Laser, 1-4 hit, 5 miss, 6 disable. RANGE: 12.  Bayonet, see knife attack roll. Scope, 1-9 successful on 12 sided die. RANGE: 16 Assault Rifle = 1-4 hit, 5 miss, 6 instant kill or disable, you pick. RANGE: 14 Sub-Class: Grenade Launcher, 1-4, instant 4 Z's kill, when applicable. 5-6 miss Blows open walls/doors, when you fail  assault rifle as a prerequisite to use a grenade launcher. Sub-Machine gun: 1-4 hit, 5-6 miss. Has a three round burst, you can hit a Z 3 times, or 3 Z’s 1 time each, or any combination thereof. Sub-Class:   BLUNTS Crowbar = 1-4 hit, 5-6 miss. Sub-Class: N/A 2x4 = 1-4 hit, 5-6 miss. Sub-Class: Additional Spike/Nail 1-4 hit, 5-6 miss, roll for instant kill, or instant disable. Sheet Metal Tipped, instant disable 1-4, 5-6 miss. Bat = 2-5 hit, 1 and 6 miss. Sub-Class:Aluminum Bat, 1-3 and 6 hit, 4 bat bends (You cannot use the bat anymore)                                        5 miss, instant disable if hit is successful.                    Steel Bat 2-5 hit, 1 and 6 miss, instant kill if hit is true. Sledgehammer = 1-3 hit, 4-6 miss, roll for Scratch if hit is false, insant disable/kill, subdivide for odd/even. You cannot attack next round, but you can use a secondary. Sub-Class: Industrial size, 1-5 hit, 6 miss, instant kill, Scratch if miss. You can only use this once per battle, however at the cost of a Scratch, you may use it again.   SHARPS Axe = 1-2 hit, 3-6 miss, instant kill. You can only use this once per battle, however at the cost of a Scratch, you may use it again. Sub-Class:Double Sided axe, 1-3 hit, kills 2 Z's. You may use this twice on your turn, You can only use this once per battle, however at the cost of a Scratch, you may use it again. Hatchet = Melee, 1-4 hit, 5-6 miss, Thrown, 1-2 hit, 3-6 miss, if hit, roll = 1-3, disabled, 4-6 instant kill Sword = 1-3 hit, 4-6 miss. Instant disable, or roll for instant kill, 1 and 6 instant kill, 2-5 disable. Sub-Class: Knife =1-2 eye stab, instant kill. 3-4 disable. 5-6 miss. If miss, roll for 1-4 scratched, 5-6 bitten. Thrown 1-4 hit, instant disable. 5-6 miss. When you successfully instant kill or disable a zombie, you lose your knife. Sub-Class: Improvised weapon w/ rifle. 1-4 instant kill,  5-6 disable.   RANGED Bow and Arrow =1-3 hit, 5-4 disabled, 6 miss. Sub-Class: Bomb Arrows,1-4 instant death. Fire Arrows 1-4 hit, roll again, 1-3 immolates Z's, 4-6 damages torso. See Molotov Cocktail effects. Molotov Cocktail = 1-5 hit, 6 immolated, dies 3 days. Buildings burn 3 days. Sub-Class:Alcohol Bomb, 1-6 hit, no misses. 2 Alcohol Bombs kill a Z, 2 days. Starts building fire.   Room Search Rolls: WEAPON SEARCH: 1 = FIREARMS, Subdivide for type, pistols and scatters only 2-4 = SHARP, 5 = BLUNT,  6 = RANGED, no Crossbows/Archers Bow. ITEM SEARCH: 1-2 = Supplies, when applicable. This is probably CVS's Walgreens, SURVIVOR and ZACH ROOM CHECK: For a room check, use a d20.  1-4 Z-Encounter, 6-9 survivor, 10-15 nothing, 16-20 supplies. If you roll 16-20, roll a d6. You gain supplies equal to the number on the d6. For a zombie encounter, roll a d6 for number of Z's   AWARENESS LEVELS L. Green = Near None                                   Civilian Known Only Green = Slight                                                  Civilian Known Only, possible Police help. D. Green = LOW                                              Slight Media Coverup,                  L.Yellow = Less than medium                     More Media, Local Police Intervention Yellow = MEDIUM                                         Full Media, Government Denying D. Yellow = Less than HIGH                         Supressed Media By Government L. Orange = slightly less than HIGH         National Crisis Orange = HIGH                                              Class 4 Outbreak, Zero Government, nearly full world infected. Black = Finished game                                             The world is destroyed and there are zero humans left on earth. Zombies are the dominant species now. They will walk the earth, scrounging, trying to fill the hole that can never be filled. Good job, how could you let this happen?   Z's or Zach Types   These zombies are put where applicable. Normal Zachs, and Fat Zachs are found everywhere.   If you miss while attacking a Z, subdivide if they hit you. If you are hit by a Z, you become one in 1 day. You take 3 supplies for that day, if applicable. 1-4 Z bites you, 5 they Scratch you, 6 is miss.   Normal Zach’s = 1 hits to kill apply infection normally.(Found in AWARENESS level: Near none) Fat Zach’s = 2 hits to kill, lower bite rolls to 1 bitten, 2-6 safe.(Found in AWARENESS level: near none) Mil Zach’s = 4 hits with FIREARMS and RANGED, 3 hits melee. (Found in AWARENESS level: Less than medium) Martyrdom Zach’s = 2 hits to kill, only found in churches, monasteries, temples, etc. (You may pickup pistols and knives only from these. Subdivide, 1-4 none, 5 pistol, 6 knife) Quislings = 2 hits kill, if bitten, do NOT roll for infection! If you are hit by a Quisling, you use 2 supplies for 1 week. PD(Police)Zombies = 4 hits kill, You may pick up Pistols and Scatterguns from them Subdivide, 1-3 pistol, 4 none, 5-6 scattergun. 

Topic by PKTraceur   |  last reply