project conditions

i have decided to post forums that show the current state of the project that i am working on to post for instuctables. projects: blimp:stand still-need mylar top secret: blue prints near completion

Topic by Sun Gear   |  last reply


air conditionning?

Failed after lightning ,change fuse , start then after 3 min green led flash and unit stop Friedrich MR12C1E ..cannot set timer OFF is it the mpu ?

Question by jma123   |  last reply


2002 VENTURE V-6 ?

WHERE IS LOW PRESSURE TO FILL AIR CONDITIONING?

Question by fmbaseball 


Can a home made AC unit be run through a mini fridge?

When making an air conditioning unit, would it be possible to run the system through the inside of a mini-fridge, rather than a bucket of ice? maybe drill some holes and put the system inside, in a little bin of water.

Question by roboman827   |  last reply


how to build an air conditioner into a wall?

27"x28" in size 220v unit, I want to put in wall instead of window

Question by wwille 


How to put air conditioner in wall?

Want to put my window air conditioner thru wall instead of window, how should it be supported and insulater for us northerners.

Question by wwille   |  last reply


How do I empty water from a Fedders stand alone a/c unit SFPM07F2B?

Water is leaking from my Fedders a/c unit. I can't find any water tray or even how to open the unit. How do I empty the water?

Question by    |  last reply


peltier device air con

Hey guys I am working on a project, my first, and am wondering if any one is willing to offer advice. the simple setup uses a swamp cooler to blow cold air over a radiator. the radiator cools down water that is connected to a peltier.if my theory is half accurate (which at best it is) I should be able to make the peltier quite a few degrees below the ambient temperature.

Topic by plucas1   |  last reply


Underground Tube Air Conditioning

I have long heard about using buried tubes/pipes to use as a heat exchanger to take the hottter air from your house, blow it through a system of closed loop underground pipes in order to use the earth mass as a heat exchanger. The earth mass removes/absorbes heat from the house air in the pipes and delivers cooled air back into the house. Can anyone direct me to web sites about this subject. Or, certainly, if you have knowledge about this, reply to me with it? Thank you, John333

Question by john333   |  last reply


Cheap Power Conditioning Unit (PCU)

In the video released by the windbelt creator, he mentions that his PCU only costs about a quarter. I dont know if that is his mass produced price, or his off the shelf price, but does anyone have any ideas about how to make a PCU for say, under a buck?

Topic by fafnir665   |  last reply



What is a cheap quiet way to cool a room?

I just moved into a new room, its freaking hot, so I bought a cheap fan... it's not loud but enough to keep me up at night.

Question by Ledviper   |  last reply


house airconditioning pipe insulation smells like burning truck brakes?

I smelled "burning rubber" in my garage; noticed that rubberized insulation on pipes leading outside to the a/c compressor was worn, aged, and peeling. (20 yr old pipes) Question: Does a/c pipes get hot, causing enough heat to melt insulation? The pipes run thru the exterior wall, up and into the garage, to the central air unit. Is the insulation only outside, or the entire length of pipes? Is this repairable or should I call an expert (that will probably charge me an arm and a leg!!) What type of fix-it material do I buy? Can I get this at Home Depot or Lowe's? Why am I smelling it in the first place and where is the smell coming from?? Can this cause a fire!! Thanks.

Question by normreyes315   |  last reply


Maximum cooling efficency

I am looking to build a compact cooling unit, sized under 12"x12"x12".  I have seen and built 2 of the most common types of home made air conditioning units.... 1) Run air across a block of ice or other frozen object. 2) Blow a fan through a whirl (or other pattern) of copper tubing and pump very cold water through. So my question is which would offer more cooling capacity? The first option is cooling with Ice which is below freezing, with minimal surface area.  The second option is cooling with cold water but still above 32 degrees, could potentially have more surface area.

Topic by scubaru   |  last reply


condition yellow group created

Condition yellow offers video tutorials and tips on a variety of life skills, from first aid and fitness training, to hacking everyday objects. There is very much a diy, do-it-on-the-cheap attitude to all the tips and tutorials we offer, as we believe the best things in life come free. The site was born out of a desire to make life-enhancing, practical information easily available and digestable. By adding them to this group, your instructables will be considered for a feature on condition yellow.http://condition-yellow.com

Topic by sam noyoun 


BJT under saturation condition??

Under saturation condition base current is very large that voltage across Base-emitter junction of  silicon based BJT is more than 0.7 volt. In this condition the voltage at collector (Vc) is 0.2 volt. By kirchoff's voltage law Vc=Vce( imagine emitter is directly grounded) Vce =Vcb+Vbe. If Vbe>0.7volt how Vce=0.2volt? As Vce includes Vbe, it must also be more than 0.7 volt. But it is 0.2 volt wich is less that 0.7 volt. How?

Question by deepakmurali   |  last reply


Cheap Room Air conditioning

Hi, I have a burning question, I thought about combining a small fridge I have with a floor fan for cheap in room air conditioning. I'd appreciate your thoughts and suggestions on how to combing the two without hazards. Tho the fan is a bit bigger, in concept would do as well.   Thanks, Chen Cohen.

Topic by DragonFX   |  last reply


Logic signal conditioning question?

I a robot i am building, i need to condition the signal as follows with any Microcontroller, only logic gates If 1 is high then  A & C should be high If 2 is high then  B & D should be high If 3 is high then  A & D should be high If 4 is high then  B & C should be high Where 1,2,3&4 are inputs and A,B,C,D are outputs No two inputs will be high a t the same time

Question by qwerty156   |  last reply


12v to 120v sine inverter boosting

I have a 20 year old van. The a/c leaked and it is much cheaper to buy a 120v window unit ($140 with a 3-year walk-in exchange warranty) than to pay a shop to rebuilt the vehicle a/c. I chose a 5k BTU window unit that uses 4.1 amps running, and have a 1k watt sine wave inverter. Alone, the inverter will not start the a/c unit, but will power the fan. I confirmed a trick to start motors with an inverter. I connected an 8" bench grinder to the inverter and started it. It took a few restarts to get it up to speed. Then I started the a/c and it ran without problems. The bench grinder motor was able to supply the reactive power the a/c compressor needed to start. Both continued to run without straining the van's alternator. BUT, I don't want to travel with a running bench grinder going, that's not safe. Is there another way to supply the reactive boost that is safe to travel with? Once I get a simple stable way to run the a/c I'll work on a mount to vent the hot side. The van has sliding windows.

Topic by DavidN71 


keep a papermodel in good condition? Answered

I've just finished a paper model boat, it's a fishing boat with a lot of small detail, and especially rigging with thread. can anyone suggest any ways to keep it from getting broken/ and i don't mean, 'make sure you don't sit on it' or something, but maybe a spray on adhesive that would keep all the joints stiff, but wouldn't damage the paper.

Question by the poodleo   |  last reply


AC Wall Unit Timer/Thermostat

I have an older AC wall unit in my apartment. It has 3 dials – one for temperature (1-8 where 8 is coldest), one for fan speeds (low cold, high cold, low fan, high fan), and a manual lever that opens the vent in the back. I’m reciting this by memory as I haven’t actually looked at it closely, but it has one of the larger 3 pronged cables that plugs into a dedicated outlet in my wall (perhaps used for a higher voltage). In any case, my intentions are as follows:    • Have a timer for the AC unit to plug into to turn off on programmable intervals           o Monday – Friday it will be on after 6:00pm until 7:00am the following morning.    • One nice feature would be to give it a thermostat capability.           o If the temperature is below 70 degrees during these time intervals, for instance, then the AC unit will shut off, otherwise it will power back on.    • Another obscure (and I’m sure complex) feature would be to allow remote access to the timer. I know that this requires some unique hardware, but I’m familiar with programming and can visualize the methodology in telling the timer/thermostat unit a different set of commands (let’s say I know that I’m coming home early – I send information to the device via the internet to have it turn on a few minutes before I get home). I understand the last part is quite complex, but it’s not a priority at all, rather, a neat little feature that would make this all the more worthwhile (and in my eyes more interesting). I know that there is a similar device out there (can’t remember the brand name) that has a lot of these features, but I’m not willing to drop $300+ on something like that. For now, my priorities are listed in order per the bullets. First and foremost is being able to program a timer for a wall AC unit. Second is to have it detect the temperature of the room and set it accordingly. And third is the availability to ‘talk’ to the device remotely. My question for you is: how can I get through the logistics on this sort of project? What components (hardware) am I looking at (general price range), and what degree of difficulty will this entail? I have my computer practically right next to my AC unit, so communication with the device won’t be difficult in those regards. Otherwise, I’m just looking for tips and pointers. If someone happens to know of a (cheap) unit that does most everything that I’m looking for, then great. I’m all ears and really appreciate any feedback.

Topic by Phoenix5794   |  last reply


old candles un used or half used bad condition good condition

Im looking for old candles un used or half used bad condition good condition as they are items of not much value i would like them for free

Topic by JACKBARRY   |  last reply


My air conditioner is broken beyond repair, any ideas on how to keep the house cool until we move? Answered

The people we rent our house from decided to "fix" the air conditioning to the house by getting rid of the unit for the upstairs and just making the duct for the one downstairs bigger. Now the ducts are basically clogged with dust because there's no filter that will fit the main intake and the main unit keeps freezing up because it can't handle cooling the entire house. We live in Florida, so it get's very hot, very fast. We're currently looking for a new house, but does anyone here have any creative cooling ideas for until then? I currently have fans upstairs blowing all the hot air out, which is working a little bit.

Question by tieguy   |  last reply


Heat powered cooler?

It's rather warm around here. And by "rather warm," I mean it's 105 in the shade, and it's 89 in the house with the swamp at full blast. Does anyone have an idea for powering a cooler with pure heat? Perhaps similar to those lightbulb-looking devices that have an inner bit that spins around when placed in direct sunlight, except that is running a little generator that is then running a computer fan, like the ice box air conditioner spotted on this site. The main thing is I'd like the device to actually be powered by heat. Just for the heck of it. Even if it's just heat mechanically powering something to power a fan that I could have just plugged into the wall. So no solar cells making electricity. I can make parabolic reflectors easily if needed, so don't be afraid to use them. What's the best way you can think of to cool off using heat? "Best" can include inefficient but really awesome, like a fresnel lens pointed at a boiler that is providing steam to run a gigantic fan. I'll go get my goggles, ray gun, and keys to the airship.

Topic by Rishnai   |  last reply


How to fix a cars air conditioning.

Alright, so my sisters cars air conditioning is no longer working. She took it to a mechanic and he said the repair would be around 3 grand to fix, but understandably she would rater fix it herself. So, I am trying to fix it for her, but I wanted to know if there was a way that I can remove the compressor without pouring Freon all over the place?

Topic by Sedgewick17   |  last reply


How to stop a servo using conditional if?

I'm using an Arduino Uno, Ultrasonic sensor (HC-SR04) a Servo motor (SG90 Tower Pro). I would like to rotate the servo continuously from 0 to 180 and back to 0. I would like to stop the servo whenever the ultrasonic sensor detects an object  at a distance of 40 cm or less. I know how to rotate the servo and how to detect an object using the ultrasonic sensor, but I couldn't combine the two. Can you kindly help me on how to do so?

Question by iSmartov   |  last reply


What to do with an old A/C unit?

I have recently purchased a new window-mount air conditioner, and now I am looking at the crappy old one saying "I can't just throw this away after having read the Dumpster Dipping instructable!" Any ideas on how to reuse/recycle this horribly used (purchased ca. 1988) A/C unit that hardly puts out cold air anymore?

Topic by V-Man737   |  last reply


Zeer Pot (Pot in Pot) Air Conditioning

Here is an idea I had for a zeer Pot AC. It basically uses a zeer pot full of water to cool a coil with water flowing through it back to a fan inside the house. Do you think It'll work?

Topic by sourcesmith   |  last reply


Car Air conditioning without Engine Running

Thinkin of running the AC from batteries at times I don't have the engine running. So- electric motor rather than direct drive from engine? How long will battery last? maybe need to have a second battery for this?

Topic by Toga_Dan   |  last reply


Keeping my tent standing in windy conditions

Hi there all you outdoorsmen and woman, just join this group and would like to find out if you have any tips on how to keep a tent (in my case a frame tent) from blowing away in windy conditions. I am mad about fishing, usually go fishing on weekends (Free State, South Africa), and had my problems with the wind blowing my tent down, hope you can assist and give me some tips. Regards Werner

Topic by Werncor   |  last reply


Insulating Ducts

I was thinking about opening one side or the top of the "metal box" that "insulates" the out/intake ducts of HVAC unit, and filling that space with styrofoam popcorn used for shipping fragile stuff. We recently had a couple of trees cut down in the backyard and now our HVAC unit is completely exposed to the sun for most of the day! We bought a shade to set up but I was thinking the styrofoam would just be a little bit more of a help! What do you think? All ideas and advice would be greatly appreciated!

Topic by thickneckarts   |  last reply


Can I air condition my mechanical room?

I have a mechanical room that houses my 2 HVAC units.  The room is not air conditioned and gets very hot in summer.  I'd like to use it for some storage since it's a good size, but would like the room to be cool.  Can I air condition the room by running a duct from the HVAC unit?  Seems like an obvious solution but then why did the builder not do it? 

Question by dimperiom   |  last reply


How does this thinkgeek air conditioning device work? Answered

I was wondering, how does this device work? http://www.thinkgeek.com/gadgets/travel-outdoors/c400/ I tried to understand it, but if it does work filtering water, wouldn't the water have to steal heat from the device, and than the vapor would be blowed to my face, giving it heat to return to liquid state?

Question by guiks   |  last reply


Free Air Conditioning, Free Water, Cheap CNC...

Function clickclear(thisfield, defaulttext) {if (thisfield.value == defaulttext) {thisfield.value = "";}}Sign-up for our newsletter subscribe August 23, 2007 Welcome back! Why just relax this weekend when there are tons of cool new projects to try out? Check them out below. How to make Evil Childproof caps easy to open With no kids in the house, why deal with childproof caps?posted by SFHandyman on Aug 22, 2007 How to Harvest Squid Ink Clean your own squid, and collect ink for printing or cooking! posted by canida  on Aug 23, 2007 Life-size Skeleton Pumpkin Carving! Get ready for Halloween early with this advanced bit of pumpkin carving.posted by mcraghead on Aug 21, 2007 FeatureIn-line headphone amplifier Use a single AAA battery to amplify the sound from your PC.posted by neelandan on Aug 20, 2007 Cart Bike Shopping cart + bicycle = a DIY system for moving lots of groceries.posted by zieak on Aug 20, 2007 $1,500 top prize! Share your quick and delicious recipe and get published in Real Simple! Propel yourself to greatness. Hack a Toilet for free water Add a sink to your toilet and wash your hands without wasting any water.posted by nak on Aug 20, 2007 Drinking Glasses from Wine Bottles Put those colorful bottles to use by making them into attractive water glasses.posted by fstedie on Aug 20, 2007 Easy to Build Desk Top 3 Axis CNC Milling Machine Make your own CNC for well under $200.posted by Tom McWire on Aug 17, 2007 How to make a $20 ice pack for $2 Make your own gel pack and soothe those sore muscles.posted by royalestel on Aug 17, 2007 Free Air Conditioning Technically it's a heat exchanger, but it's still a free way to get cool air.posted by Vyger on Aug 16, 2007 Now go build something awesome, and I'll see you next week! -Eric

Topic by lebowski 


lets trade kits

I will trade for your random parts i mostly very big LED's or LED displays or any electronics you dont need that are in OK or acceptable condition for upcoming school science fair (don't live near radio shack) i will trade my electronics kit to you it includes.2-POSITION ROTARY SWITCH condition=mint about the size=of the tip of your thumb to the middle joint.3 pin stereo jack 2 peices condition=mintsize= of a nickel.mono and disk capacitor condition=OK (sightly scratched leads)1 film capacitor condition=mint1 resistor 260 Ohms condition=good1 toroid with copper wire 1 without condition=mintsize= 2cm in circumferencesize=a dimeIR RECEIVER FOR REMOTE CONTROL condition=okand 5 other unknown peices (sensors and capacitors)

Topic by albylovesscience   |  last reply


what causes black soot to come out of air conditioning vents, the air conditioner is brand new?

What causes black soot to come out of air conditioning vents, the air conditioner is brand new?

Question by sch1031   |  last reply



How can I modify a wired air conditioning control to be wireless or IR remote control?

The main intention is just to "turn on" and "turn off" the air conditioner wireless-ly.

Question by indomgl   |  last reply


How to create an Adiabatic, Isochloric and Isobaric Environment?

I am trying to make an chamber to examine the growth of a micro organism in the above condition. The chamber temp. should be maintained at 95-100 C and. The environment should be tends to vacuum(Vacuum condition is practically impossible). Please help in choosing the material and conditioning the same.

Question by dashinfoline   |  last reply


I like to use my air condition free how many solar panel will need?

I want to make my home project.

Question by    |  last reply


Does anyone know where I can find a cheap ipod touch 16gb 2nd gen cheap and in good condition? Answered

I need a cheap ipod touch 16gb 2nd gen that is in good condition and if you have one then I'll pay $150 for it if you'll accept.

Question by fireblast_1212   |  last reply


i am from nepal. cani participate in the contest. i dont understand the terms and conditions :D ?

I am dumb. plz help. i want to participate in contests and i dont get the terms and conditions

Question by sbhandari3   |  last reply


Is it important to store electronic parts in a controlled dust-free and air conditioned atmosphere? If so, why? Answered

I have been notified that my parts and service area will be shrunk and no air conditioning will be installed in the new building we are moving to in a year and a half.  I need some information as to the condition of my parts when exposed to the heat, humidity, cold, etc.  Can you let me know because if there's a problem, I have several hundred thousand dollars in parts that are at risk! Thank-you!

Question by loishen1   |  last reply


Best "HHO Electrolyte" Versus "Conditioned Water" and Why you think it is ?

I eared many things about hho generator but some say it is better to use "solution recipes" (electrolyte) instead of  "conditioned distilled water" . I'd like to know more about conditioning distilled water . I need your help on this one ! I plan to use rectified high voltage for 2 dry cells . 8" by 8" 16 plates each using microwave parts but I can't figure the minimal input if coming form  12 volts batteries and car alternator . I bet I'll need a converter from car DC to H/V transformer and I have no idea how to make it a reality Use the best of your knowledge to answer !!! Instructive and useful links are welcome ...

Question by wiseboy   |  last reply


Best "HHO Electrolyte" Versus "Conditioned Water" and Why you think it is ?

I eared many things about hho generator but some say it is better to use "solution recipes" (electrolyte) instead of  "conditioned distilled water" . I'd like to know more about conditioning distilled water . I need your help on this one ! I plan to use rectified high voltage for 2 dry cells . 8" by 8" 16 plates each using microwave parts but I can't figure the minimal input if coming form  12 volts batteries and car alternator . I bet I'll need a converter from car DC to H/V transformer and I have no idea how to make it a reality Use the best of your knowledge to answer !!! Instructive and useful links are welcome ... Thanks !

Question by wiseboy   |  last reply


How do i check if a single stroke motor is in good condition? Answered

Currently i have a single stroke ENYA model 3304 petrol single stroke rc  airplane engine. I dont have the fuel tank nor do I have a fuel hose nor do I have the fuel. So how do I actually check it? Is it possible to make the fuel? Also, what use do i have of this engine besides using it for a rc airplane?

Question by Boppo3   |  last reply


How difficult it would be to modify an air purifier so that it would also work as an air conditioning unit?

I'm one of those people that are always hot and I always have an air purifier running in my room. I've seen different instructables about making home made air conditioning units using fans and such and I would like to know if it would be possible and if so, how effective to modify my air purifier to also serve as an AC unit. It is a round honeywell air purifier, see picture.

Question by Shadow13!   |  last reply


I want to purchase a lcd monitor. What can I do with my crt monitor it is in working condition

I have a samtel crt monitor it is in working condition. I want to buy a lcd monitor. What can  I do with the old monitor

Question by SAJAMEEL   |  last reply


Help in asssembly programming for AT89S52 (8051) for blinking LEDs?

P3.0 has a push to on switch P2 has 8 LEDs I need the LEDs to blink as: If switch is ON the Port P2 goes as: 1000 0001 1100 0011 1110 0111 1111 1111 This condition holds indefinitely until Switch is pressed again (OFF) and the Port P2 goes as: 1111 1111 1110 0111 1100 0011 1000 0001 0000 0000 This condition holds indefinitely until switch is pressed again (ON) and first conditions occurs. Any help would be appreciated. Thankyou!  

Question by amendiratta   |  last reply


Electricity Free, wind powered Air Conditioning system from an old fridge

Has anyone ever thought of connecting a compressor from a refrigerator to a wind turbine and making an electricity free AC system for their house? It could be made from all free parts - turbine from barrel (vawt), dead fridge, etc. Please comment

Topic by LinuxH4x0r   |  last reply