Looking for a Google Wave Invite for a friend?

So, if anyone has a google wave invite, let me know, and I can go about sorting my friend out with it. Thanks!

Posted by gmjhowe 8 years ago


Leatherman: Surge or Wave?

Ok, so I want to buy a Leatherman. I have narrowed the choice down to the Surge or the Wave. The Surge has more tools, but you cannot have the file and the wood saw at the same time. The Wave has both. I am swaying towards the Wave at this moment, do any of you have Leathermans and would recommend a certain one?

Posted by knexguy 9 years ago


possibility of Wave Change?

This theory states (my own be exact) that a certain wavelength can become an amorphous solid using a certain gas, a friend of mine agreed with me. What is your opinion on this matter?

Posted by crc09 8 years ago


What brings big waves to lake michigan?

Well I'm going to lake Michigan in 3 weeks and their are sometimes huge waves that are 6-7 feet. What brings them in, storms? wind?

Posted by thejrb 10 years ago


Is it possible to produce a sound wave that makes us experience silence?

What I mean is: a computer or whatever produces that sound and we can't listen to anything, not even our own speach. That would make us experience TOTAL silence. Is it physically possible? That would rock. :) Thanks, Pedrotome

Asked by pedrotome 9 years ago


Is there something wrong with my new Leatherman Wave? Answered

So I finally got a Leatherman Wave after finding a good price at a sports store for $55 (Wave+Croc+bit extension) but it isn't quite what I expected. I've never had a Leatherman before or a large multitool (Wave replaced a Gerber Dime), so maybe this is normal, but it is really stiff to fold at the pivot points. Some people say that it just needs to be opened and closed a lot to loosen it but I would like some advice. I haven't oiled it yet but I'm not sure what kind of oil to use. The tools and knives are ok, they don't require much force, but I am surprised by the folding action. Is the folding action supposed to go different ways? From the pictures I included, sometimes it goes to the right and sometimes to the left.

Asked by Arya42 3 years ago


How can I pass voltage through a wire only when it goes over 7 volts? Answered

I'm trying to hook up a Z-Wave contact sensor to my home alarms wired contact sensor. The alarm panel seems to provide a constant voltage of 6.8 when the door contact is closed and 13.5 when it opens.  The z-wave module I am connecting however looks for no voltage in order for it to be closed and any voltage for it to be open. So how can I only pass the voltage to the z-wave sensor when it goes over 6.8 volts? I have a ground and power wire running to the respective terminals on my alarm panel. I'm thinking I may be able to wire in a resistor but am not sure if that is what I need or what size. Thank you

Asked by Mweston011 3 years ago


Does anyone have an English copy of Shrodinger's paper "Quantization as an Eigenvalue Problem"? Answered

I've had a terrible time finding it in English. My German in nonexistent. :-)

Asked by Vorenus 7 years ago


Uploading something made using an instructable as a guide? Answered

Basically, I am currently working on a project using an instructable as a guide. I'd like to share what I've got afterwards, but I'm not sure if the "Photos"-submit-function is supposed to be originals only, or not.

Asked by Skelpolu 6 years ago


Square wave DC transformer Answered

If I was to feed a dc square wave into a transformer would I get a dc square wave as an output?

Asked by workinprogress37 8 years ago


Tesla's "magnetic wave" communications idea proposed for mine safety

A report in Science Magazine describes a proposal to use Nikola Tesla's magnetic amplitude modulation as a way for trapped miners to communicate with the surface.

Posted by kelseymh 7 years ago


Google Wave Invite Trades

Ok, you can trade whatever you guys want for wave invites (no money). Rules: 1. No posting emails below, only do it in PM's 2. No trading money/people/animals, only patches or other stuff that you come up with 3. No spamming. I hate the food and hate when people do it. 4. If you dont have an invite, dont say that you have one. That is called lying. I have 8 active invites so if you want one comment below. I will start this off

Posted by robots199 8 years ago


I have Google Wave invitations...

...and not many friends who know what it is. I have 15 of them, so is there anybody left who wants one that doesn't have one? Just leave a comment with your e-mail address. If you don't want to post your e-mail, post a comment claiming it and then send me a message. I'll update the count as I send them out. 08 invites left.

Posted by Weissensteinburg 8 years ago


What do you think of this circuit?

I made a few changes to a circuit, since it's the first time I do this I'd like to know what you think and if there's anything I should change.

Posted by pquadros 5 years ago


"flute" hole size and spacing

I've got a clarinet mouthpiece and some pvc pipe...25mm but i'm sure I can adapt it bigger if necessary. Is there some elegant equation (like where the natural harmonics on a guitar lie) to calculate the spacing and diameter of the finger holes for chromatic tuning?

Asked by timgray 8 years ago


Home automation system configuration?

I have recently purchased a used home automation system off of eBay. The whole package included the following items. 1. Amber Wireless AMB8425-M USB Stick 2. Aeon Z-Stick S2 USB Stick 3. Huawei E173u-2 Boradband USB stick 4. 3 x Zwave Socket adapters 5. 7links NAS Print/ USB Server Photos of these modules can be seen below. The seller was not aware how all these modules can be put together into a home automation system. I googled for sometime and figured out that I can setup an indoor automation solution using only the Aeon-Zwave USB and the Z-Wave socket adapters, and control them using my android phone. Can someone please help me how can i use the remaining modules and setup the automation for remote access as well ? Many thanks

Asked by muhammajunaid 3 years ago


Is electromagnetic wave can travel with ultrasonic wave? Answered

Is electromagnetic wave can travel with ultrasonic wave.If yes,then how far an ultrasonic wave will travel in air medium.

Asked by Rajkumar2506 1 year ago


Leatherman Wave

How long is the leatherman wave closed? Is it 8 inches (that's what the ruler is), or 4 inches? Thanks because this will decide whether I buy or not.

Posted by Wafflicious 9 years ago


mechanical wave

I'm trying to build a tail of a fake animal, and the tail is kinda long (total length of about 3 feet), I have a 10 pound pull solenoid and I want the tail to kind of do a wave thing, like if you were do a wave with your arms ( not in a group, all by yourself where you hold your hands together, you know what I'm talking about). I know how to do the electronic part of it by sending pulses to the solenoid, but How would I convert that into a believable tail?

Posted by guyfrom7up 10 years ago


Instruct a wave.

Instructables can be much better. Powered by google wave. after i get my server set up with google wave i will try to help instructables by building extentions to help the whole thing work. Installing instructable found @ https://www.instructables.com/id/How-to-install-Google-Wave-to-your-server/ first instructables would need to install the wave extention to openfire and send me an email at james@jamesm.com.au when thats done for me to start working, making extentions. Installing instructable found @ https://www.instructables.com/id/How-to-install-Google-Wave-to-your-server/ robots made: Rossy, translater, spelly, spell checker, bloggy, alows waves to be on https://blog.instructables.com/ blog? please can still use wave, robots i will make: Sally, alows people to sell there projects using paypal, not made yet, hard, instructables robot, will be a hidden group that would include the robots above, hardest extentions i will make: JW, uploads video(mp4, flv, avi, ect), music(mp3, avi, wav, ect), images(jpeg, jpg, gif, ect), not yet, easy, swf view, alow swf files to be shown on instructables, not yet, easy Questions... will this disable instructables for a little lime? NO, to annoying. will we need to resumbit our instructables? NO that would take forever, robots job. what would instructables like this for? NO SLOW FLASH, faster to load, interactivity, save space Facts. Addsence will be getting instructables more $$ by more users. members can make group projects. members in an area can organize an event. eg maker-fair (please come to australia) members can add any files into waves. (some files may need a new extention just made for them) I will be updating this alot when I think of more so come back soon. Extentions found: Canvas -- bad when i saw this -- vectoreditor -- this has a little prob with text. like/dislike, html_gadget. Extentions i'm working on: JW player uploads and plays videos. (still needing some more development) Bot_protecter. simple editable div can not be recorded by bots eg. email addresses. (NOSPAM WAHOO) i will add all the xml files to a wave for me to create installers and add them stright into the instructable robot i am also working on. How will the gadgets be called without the xml file to add manualy? ok so if i can i will alow the instructable robot to change [canvas] [video] [like] [html] into the gadgets. the video first ask for a file and then embed that video with the jw player and lisenced if donations go towards that later in this project. and for the bot_protecter it will just pick up email address and add them into the safe gadget i made or get called by [safe]. theese can be shown as plain text by {canvas} that will show as [canvas]. if you want to see what some gadgets are goto http://jamesm.com.au/blog/ just remember that you neeed an account untill they alow guests to look at waves it is a smart way to embed the waves that i will make better when i can and this is not installedd on my server because i need to update the java. cheers and happy waven.

Posted by james.mcglashan 8 years ago


Dry ice in microwave?

What happens when you put dry ice in a micro wave? Im just wondering cause a local grocery store is now selling dry ice for Halloween effects (yes i know they cant sell to minors).Are the result any thing like this? (i dont think that microwave was turned on)

Posted by i make shooting things 10 years ago


Need help with signal generator 5kHz and 8.7 kHz

Hi, I'd like some help. I'm trying to make a simple signal generator that will produce a 5kHz and an 8.7kHz square wave signal. I have some basic (very) electronics skills, and know how to follow a schematic and solder things up. The ones I've found online are outdated, using obsolete IC's. Any help would be appreciated. Thanks in advance.

Posted by NorthWind 7 years ago


Radio Mod?

I would like to mod a handheld radio (or even a analogue tv but radio would be better) to get to listen to higher frequencies than normally available. I'd Like to hit the 1420Mhz mark approximately but with little electrical engineering or architecture experience, I'm not certain how? Which might make a TV easier to get there as UHF covers that right? (still safer to play with a battery powered radio than a 240V powered one) I figured there is someone out there with the ability to figure out what components need changing? The variable resistor that tunes it perhaps? If you'd rather post an instructable I'll follow that or just tell me what needs replacing with what? Any Ideas?? Thanks

Asked by Mr E Man 4 years ago


I need a circuit that can convert sine waves to square waves.

I need a circuit that can convert sine waves to square waves that works with a wide range of frequencies and doesn't change the frequency, for a project i am working on. I also need a circuit that can convert square waves to ramp waves that also works with a wide range of frequencies and doesn't change the frequency. Thank you in advance.

Asked by Super_Nerd 6 years ago


The feeling of waves? Answered

How do you scientifically explain the feeling of still being in the waves at the ocean or the wave pool after you've left the big blue?

Asked by Fizzxwizz 8 years ago


turn a square wave froma 555 into a sine wave? Answered

I would like to know how to smooth out a square wave to turn it either into a sine wave or at least a triangle wave. Or if it's not possible i would like to know how to make a sine wave generator to use as a lfo thing for a home made synth. Thanks, Josh1324 PS. It has to be analog, im not getting into microcontrollers or anything digital.

Asked by josh1324 7 years ago


Why is a modified sine wave harmful to electronics? Answered

I was reading an article in a computer magazine about UPS (Uninterruptible power supplies). It said that UPSs produce a modified sine wave. However it said that using a modified sine wave to operate computers over long periods is harmful. I wonder how a modified sine wave could damage a computer. All it is is just a sine wave that steps instead of a perfect curve. Right? 

Asked by Super_Nerd 6 years ago


How to upgrade a Modified Sine UPS to Pure Sine? Answered

Hello, How could I upgrade an uninterruptible Power supply that has a Modified Sine Wave to Pure Sine wave? I got a cheap 400 watt HP UPS (for a tenner) with a modified sine wave;  then got to discover it would be much nicer that is was a Pure sine Wave ^^. The purpose is to use it as an inverter for most household items (in a solar set-up). There are videos to increase wattage but I have not found yet something informative enough to upgrade to pure sine. Thank you!

Asked by RincewindT 2 years ago


Schematic needed for square wave generator.

I need a schematic and the code for a square wave generator, with the following specs (although it is a bit specific) Repition Rate (external trigger, 20 Hz 200 Hz 2KHz 20 KHz 2 Mhz and 5 MHz) controlled by a rotory switch. a vernier (pot) controlling pulses per second.) a single shot button (N.O. push button) external trigger (BNC Connector) Delay (Rotary Switch)  .1, 1, 10, 100, 1k, and 10k microseconds Vernier (pot) for the delay a sync output (BNC Connector) with a toggle switch for polarity. double or single pulse on the output (toggle switch) polarity selection on the output (toggle switch) gate on off (BNC connector and toggle switch) 10db step (on or off toggle) 50 ohm load on or off (toggle switch) rise and fall time (pot) Any help would be greatly appreciated, as this is a bit specific. I only need a schematic, and everything else i can take care of. Once again, Thanks for the help.

Asked by mchp82 6 years ago




Moldable, non-permanent, yet hard substance?

I'm trying to create an emerson wave for my knife, so I need some kind of thing that can be molded onto the blade, will become hard, and hopefully removable. Anything exists? 

Asked by Batryn 6 years ago


How do I make a Square Wave Generator? Answered

I need to make a square wave generator for a project. Does anyone know how to build a square wave generator that can generate a frequency 100-150KHz? 

Asked by Mr_Electric 8 years ago


where to find old microwaves...? Answered

I FRIED my MOT and im looking for some old microwaves, i checked all the junk yards, but couldn't find any. Any suggestions?

Asked by pwnag3 6 years ago


Full Wave and Half wave rectifier (220 Volts AC to 5Volts DC) ? Answered

Hello, I have to make a Full wave and half wave rectifiers which step down 220 volts~ AC to 5 volts DC.  I am pretty aware of the circuit diagrams , I would appreciate anyone helping me with the exact diodes and transformers i need and where i can get them.  Please do let me know about a SAFE circuitry 

Asked by ParanoidAditya 3 years ago


Square wave inverter?

I am building an inverter that will use a square wave pulse to drive MOSFET's at 50-60Hz. I have read and heard a lot of stuff that running square wave into a transformer is not a good idea, what I want to know how bad is it? Also will adding capacitors as seen in my image be able to smooth the square wave a bit to help the problem? If so what capacitance should I use? (About 200A input) (The 12V square wave is coming from paralleled MOSFET's)

Asked by The MadScientist 7 years ago


How to biuld a sine wave inverter?

I need to build a sine wave inverter but i do not have the schematics.I need an assistance in this project.I can build a square wave inverter but it makes noise in the fan and does not surport my 29 inch television causing it to have frequent low current  problems.I heard that sine wave inverter is more efficient for home appliances.Please can some one help me with a simple diagram to build my own efficient sine wave inverter.Thank you all.

Asked by 8 years ago



radio waves for a long range

How to create something for transmitting and receiving radio waves with data(binary code or hex code) for a long range and work with pc? or what material(device) i need for doing it. if have a idea write it. thanks in advance

Asked by HosseinJ4 1 year ago



Measure triangle wave with DC ammeter

If I measure a positive only triangle wave with an analog DC ammeter will it give me a relatively accurate current measurement?

Posted by kenw232 4 years ago




Sound Energy?

I would like to know if there is a way to amplify sound waves.  I would also like to know if the frequency of the wave affects the power produced. 

Asked by AlexxSolace 5 years ago


Calculate energy generated by wind or wave energy?

Is there anyone on here that knows how to calculate the energy generated by from wind or waves turbines. I've been trying to find out on the 'net but all i can find is either way too advanced for me or just describing good places to put the turbines. I want to know if I should go for wind or wave energy for greening out my summer house.? I think wave generated energy would suit the place best but i need to confirm that.

Asked by Osquar 8 years ago


Uhf and Vhf Radio Waves

Hi i have a problem i need  device for sending(transmitting and receiving) radio waves with data(binary code or hex code) and receive it. what material i need?and how to send data with this board.could i use raspberry pi? i need to boost this signal for 100 km and more .

Asked by HosseinJ4 1 year ago


How best to move a servo to music?

Hi All! I have a quick question, I want to move a servo in time with music and was wondering how best to do that with an arduino. I found someone on Instructables who made a talking skeleton open its mouth when the volume of the music rose above a certain point but just remapping the analog in signal from my wave shield is not moving the servo as smoothly as I would like, it just sort of jitters around. I guess this makes sense as the voltage changes quite a bit to create an audio wave form. I have a wire from R7 on my wave shield plugged into an analog port. Would the MSGEQ7 chip be the best way to accomplish my goal or is there another way? If anyone is curious I am attempting to move the arms of a portal turret in time to the turret opera. Thanks for your time, -ookid

Asked by Modarius 6 years ago