Is this a good set up for a series/parallel configuration? when I test it with a multimeter the voltage was around 2.5 v each cell produces 3v@40ma. so something is wrong here.
Question by dominick.j.pezza | last reply
In the current make magazine issue #15 There is a project called the Seebeck Generator. I was wondering about the use of Peltier Cells. Can someone elaborate as to how they function? I mean can you get them in different sizes? Would different sizes effect the power output? If I took like 50 of them and somehow combined them could I get a higher yield? What if you used it in combination with something like Hydrogen? Ideally Hydrogen burns hot and if I had a large version of the Peltier Cell Could I use it to get a real power output? Possibly enough to power an electronic motor? Just some random thoughts the magazine sparked. Thanks, Jester
Topic by Jester_boy2 | last reply
This question has been bugging me for a while now. What's the difference between a 1.5v AAA cell battery and a 1.5v D cell battery? Why is the D cell bigger? Is that just for weight, or does have more resistance, like it lasts longer? Why is one better? Thanks!
Topic by Bran | last reply
Has anyone built a betavoltaic cell? Tell us about it! I could imagine someone collecting the isotopes from old smoke detectors,painting them onto an old solar cell and making electricity in the dark. I'd try it myself if I wasn't such a lazy old fart.
Topic by etimm | last reply
I have alot of Cordless phones with the handsets and i have the bases, i have answering machines , regular phones. Old cell phones....Is there components in there that i can make a cell phone jammer with? Im teaching myself electronics by taking things apart,lol but i still have trouble figuring out what parts are what. Any help? thanks. Ps, i would love to make one with a altoid tin if possible.
Topic by valmont325 | last reply
So i have this old broken cell phone , i think all of it works but its no longer connectable , the body and the screen . it has flash so i thought to somehow make a little flash that i could just flash around for fun , and maybe some other cool stuff with old phone ? thanks
Topic by avatardub | last reply
Hey, does anyone has an instructable on how to make a nano crystalline solar cell? i am currently interested on doing it, but do not know exactly whereto make a good start, especially with the materials. So, can anyone help me out? Thank you very much.
Topic by brainwash | last reply
Well apparently my mother dropped my cellphone, now when you turn it on, the screen lights up, but it's blank, it vibrates when I turn it on because it was on vibrate before (startup sound). But it won't do anything else, I tried changing the ringer, hitting buttons, and it didn't make any sounds. Display cable popped out? Any ideas? -Punk
Topic by Punkguyta | last reply
Hi Guys! A few weeks ago I found an auction on ebay, bid, and won myself some big old pack of solar cells. Now these panels are wafer thin, no coating or covering. Additionally, I need to put the wire collecting ribbons on myself. The only problem with these is that they are incredibly fragile. What can I coat them with to protect them? Is there any spray or acrylic or resin that you use to protect them? Thanks
Question by transistorguy | last reply
So, y'know how sometimes you might feel like sharing your music with friends, but you dont want to share you headphones? The solution would be to carry speakers, but usually they're sort of bulky and they wont fit in your pockets very well. So, what about cell phones? even some that are maybe a few years old are still smaller then some speakers. Everyone knows taht cell phones can be Really loud, so what if we somehow add a cable to attach to an audio device, and switch around some things inside, and use the dead phone as speakers?! I would try and do this, but i have no idea how, so this is just an idea for you peoples to think about.!
Topic by Sadam and Osama | last reply
Lets say I have a solar panel that gives off 5 volts at 30mA. if I were to put a ten ohm resistor in series with it would There be basically no effect because a 10ohm resistor woulkd limit it to half an amp, which is way more. Or does the solar panel act like ~ 167 ohm resistor, and adding a ten ohm resistor will limit it to 28mA?
Topic by guyfrom7up | last reply
I've always thought that it would be cool to have more than one cell device on my specific account. (no, not like a family sharing plan). Let's say, I want to keep a spare phone in my glove box, on a trickle charger, so that I always have a working phone in an emergency. Let's say you use your cell phone a lot.. Instead of swapping out exhausted batteries, what if you had a second phone on the charger that you can switch to whenever needed. Is it possible to clone your telephone, so that you can have a spare device. If you are paying for the service, and you can only use one of the phones at a specific time, why would the phone company care? I have 6 old phones from which I upgraded. They all work fine, and could make great spares if there was a way of programming them to work on my account. Can the MAC address / serial number be cloned to an old phone? J.
Topic by John_the_Builder | last reply
My friend gave me an old cell phone, with no battery. (No it does not have service). I don't know if it even works. It is a Motorola i860. Where the battery goes are four pins. How can I connect a AA, or AAA, etc battery to it to see if it works. The first time I tried it, it got real hot and then the battery smelled like it was burning. The second time it sparked. Is it even possible to do this? If it is, I need to know the voltage, polarity, and what pins to use.
Topic by popit | last reply
Well, my mom knew (somehow) that I needed some button cell batteries for some experiments. (Mwuahaha)Well, she went and got me some, but I don't know the power for any of these.Can anybody tell me?List:AG1AG3AG4AG10AG12AG13And if this helps, they have numbers next to them saying: (in order of above)364392377389386357Please help, thanks!
Topic by GorillazMiko | last reply
I'm making a hydrogen motorbike that runs this kind of motor ===>http://www.ebay.com/itm/ME0709-Brush-Type-Permanent-Magnet-Motor-PMDC-24-72V-DC-Etek-R-19HP-pk-/250954809815?pt=LH_DefaultDomain_0&hash;=item3a6e1281d7 However, all i can find are " make your own HHO" fuel cells (which I'm pretty sure isn't what a fuel cell does but I might be wrong on that). Where can I find an actual hydrogen fuel cell that can power this motor plus lighting (and a few things like an arduino) for the motorcycle. Thanks a bunch!
Question by Sun Gear | last reply
I am trying to make a somewhat portable solar panel with (3) 3 1/4" x 6" solar cells mounted on a durable fabric, but what I'm wondering is how to mount them. I am thinking of using glass super glue to mount the cells on or sandwitched between two peices of glass and having that sit in a plastic frame to be riveted on the fabric. what I want and haven't been able to find is a low profile license plate type plastic frame that would fit the glass perfectly. I only want to spend around $1 per frame, so custom isn't going to cut it. Does anyone have an idea of a plastic or even aluminum frame that would fit these specifications? Thanks!
Topic by tinstructable | last reply
Question about solar cells. Since solar panels are encased in glass or polycarbonate, does exposure to the elements degrade solar cells? And if so, in what fashion? Corrosion of the traces? water infiltration? etc. etc? Or is it a matter of the fragility of the cells?
Topic by Tool Using Animal | last reply
Question | last reply
Recently my girlfriends cell phone broke. The On/Off button still works, but none of the other buttons work. It still can receives phone calls, and text messages, but only one button works. The other day a couple of the other buttons worked briefly, but they went back to not working after a couple of minutes. I think its a problem in the phones wiring. Before I go opening up the cell phone, I was wondering if anyone has any advise or any experience working with cell phones, that might be helpful.
Topic by seanmcdaneld | last reply
A couple of questions: 1) Does anybody know where to get cheap platinum wire (or platinum coated wire) 2) Does AC work better than DC for electrolysis because neither of the poles will corrode. 3) fuel cells produce around 2 volts, right? 4) Is there a cheaper alternative than platinum for converting hydrogen (and does it need the oxygen?) into water and electricity?
Topic by guyfrom7up | last reply
Question about flashing red LED: I have a simple circuit--switch, battery, resistor, LED. Today, when I clicked the switch on, the LED came to life very slowly, as of it were fading in. I have never seen this behavior before. Is it the battery? (3V, 2032 coin cell and 100ohm resistor). Thanks.
Topic by yongeeks | last reply
I found a watch phone(s) on eBay that has TXT, GSM, and WAP capabilities for a good price. Anyways I need to know what provider I can use it with. I want to at least have the TXT and GSM. The WAP would be cool too! Thanks, joespicnictables http://www.ebay.com/itm/New-high-cost-performance-Wrist-Watch-Cell-Phone-MP4-/230675500795?pt=Cell_Phones&hash;=item35b554cefb#ht_6074wt_932
Question by joespicnictables | last reply
I need help with a project I am working on. I need A list of parts and a simple diagram for a CDS circuit cell that will turn on a LED(s) when there is no light. It is a circuit that will be powered by a 9 volt battery, and will power 2 5mm LEDs. If you can help me, I will give you credit in the instructable.
Topic by XOIIO | last reply
Hey everyone, I'm going to be getting a cell phone this week, but its my first one and I have no clue whats good out there. I already know that I'll be using Verizon, so I wanted to see what everyone would recommend thats available on there network. I would like a flip phone with a decent camera and text/pic messaging capabilities, but beyond that I'm not too concerned about extra features. And I refuse to get the Razr, so don't even suggest it.Here is a list of verizon's phones:VerizonThanks!
Topic by Andrew546 | last reply
I was playing around with some of my 1/8in. NeFeBr (or is it NeBrFe?) magnets leftover from the challenge. Was using them to find screws on my flip phone. I noticed that when I put it at the "joint" of the two halves, the screen went dark. Turns out it thought I shut my phone. This was just a little odd tidbit that I wanted to share, that has potental. But, it isn't an instructable, so I just posted it.
Topic by zachninme | last reply
Check it out: I'm a major Android fan. Sure, Mac makes some incredible machines, but I just hate how shut off they are. That's why I love Android. You're able to change the battery if you, you can expand your memory, you can even make your own apps without hoping to gain someone's permission. However, the one thing that iPhones have over Android phones is the fact that they have the ability to be placed on a dock. My question is, why can't Android phones do this? Now, instead of making docks for these phones, maybe it's possible to use the ones for iPhones that are already there. What if there was a little plastic piece that snaps on to the iPhone dock and has a mini or micro USB male end on the other side? Of course, there are all kinds of sizes and shapes to Android phones, but I'm sure once this piece is perfected, one could make different shaped ones for different phones to fit neatly. Most of you are much smarter than me (or maybe have more ambition), so I'm sure you can figure out how to do this sooner than I can. If you have and idea on how to make this work, good luck and let me know how it turns out. P.S. If you make this and market it, be sure to credit me for the idea, yeah? ;)
Topic by SamSkellington | last reply
I'm over 50 and trying to learn how to hack and mod electronic devices. Perhaps this is a dumb question, but so what: I have an old Samsung camera phone that is no longer subscribed to a phone service. It's just a phone, without a smart card. Is there any way to use it as a digital camera, or address book, alarm clock anyway?
Topic by theglove | last reply
I have 2 flip cell phones.(motorola and sony ericcson). i dropped both of them and now the display will light up as usual; however i cannot read or see anything but a blank lit up display. is there anyway to fix the inside display on cell phones?
Question by johnshericosmo
Does anyone know whether it's possible to re-purpose old cell phones as walkie talkies? I have some "old" phones (1X Tri-mode - 1.9 GHz and 800 MHz CDMA and 800MHz AMPS), and I'd love to be able to use them for our ski club as a short range back channel for communications in addition to the radios we use when we host races. I'm assuming we'd need to get some sort of base station, not sure where or how. There are probably some laws we'd have to comply with, assuming that something like this is even possible (I'm in Canada). I'd consider activating & using them normally, but the cell coverage on our mountain is very weak and unreliable, hence this post. Any ideas on how to get something like this started? Or is it a non-starter?
Topic by celltalkie | last reply
To be honest, i think it sounds like a good idea. the device would probably have to be about the diameter of an orange, but i bet having a pocketwatch that doubles as a cell phone would be a hit with steampunk lovers! anyone agree with this?
Topic by EngineerJakit | last reply
What stops a cell from being extremly large? inparticular in prokaryotic cells, like algae, where it is the cell and is not part of something bigger like a tissue or organ. also in the way of darwins theroy of evolution, does any one know how much it appiles to algae, either all or some strains and how much they addapt and how quickly?
Topic by thelastonekills | last reply
I have so many projects going on in my head that I am surprised there is room for anything else. Heck I have plans for a Jacob's ladder, Tesla coil, perhaps a coil gun but who knows. Well for quite some time I have also considered a vibe-bot or whatever you call them, the ones built with pager motors. But since this is not too exciting to some people it is not something I have jumped on doing. But I came up with a new twist today on the vibe-bot that I would like to try. I do not want to give away too many details here because I would like to keep it a surprise if it works. But I do see one possible problem with what I want to do and that is weight. The parts I have already weigh in at 26 grams. I am not sure how much the rest of the parts are going to weigh at the moment. But I was wondering what you think the weight limit for a cell phone motor is. I know that some cell phones can weigh a bit but I have no idea what the weight was for these cell phones since I did not have the scale at the time I tore them apart and would not have thought to weigh the phone anyways. Thank you for your insight.
Topic by jcaresheets | last reply
Does it matter what thickness I use to encapsulate my solar cells? I have gone with a 0.23 mm sheet and the sales rep is trying to get me to buy the 0.4mm sheet which is more expensive saying that the lighting conditions will be better off than on the thinner eva. I don't really believe that the thicker sheet would allow the solar cell / panel to increase the power generation but i have no experience in this nor could i find a forum that discusses this topic. What have you guys found? does the eva thickness matter? Thanks!
Question by Poloman | last reply
What is the simplest method for someone like me who has very little experience in electronics and a low budget, to achieve a high current output for a hho cell? This is for a hho cell and torch so the voltage must be low and the current must be high. Basically what Im looking for is a cheap and easy way to create 3v -5v together with 10-100 amps. Are there any specific household appliances that can put out this current? Not car batteries, car battery chargers or wall sockets. Also is this enough to kill you or just give you a bad shock?
Question by mitchells | last reply
I have a pretty good camera flip phone that will be useless in a few months, any ideas or instructables you could suggest on what to do with it? Any input would be greatly appreciated! I also have an old candy phone, with a really good flashlight built in. ideas? (No, this is not my phone) Lukethebook333
Topic by lukethebook333 | last reply