I m making a project for my college. I m finding somw difficulty in getting ICs of it. So ne of u know ne good company website from where i can get free samples of ICs. Plzz tell me . I m from INDIA.
Posted by ankit_dus 10 years ago
I am looking for a chip just like the ones used in any calculator that does multiplication addition and subtraction. THe device i am looking to build has to be as thin as a credit card have a 8 character segment lcd and only be able to do addition and subtraction. so i need to be able to have buttons" 1 to 0 + - and = and . "nothing more. i looked at some attiny ics but they require a another ic to drive the lcd. also the the data entered need to stay in if the power of the ic goes out. most calculators have only one ic, any idea what the best ic for this application will be? thank you in advance. i need something this small. http://www.logopremiums.com/calculator-ballpoint-pen-HWK922LP.jpg Thank you
Posted by virgiltu 5 years ago
I'm a new to building circuits and trying to help my son with a school project. Here is the circuit to hack the wireless doorbell into snail mail notifier (http://mimeproject.blogspot.com/2011/01/mail-notifier.html). I'm lost here though it appears to be a simple circiut. (attached the circuit as image file) Please help me with ordering parts and the proper sequence to solder them. Thanks in advance. - Al
Posted by thousandeyes 4 years ago
Hello, I have been tinkering with the idea of being able to press 4 buttons in a or any sequence and have a set of LEDs light up showing which button was pressed first, second, third and so on. I was able to do this with plenty of solid state relays (kinda like a 4x4 matrix of relays) and four switches I can turn on various LEDs (1 thru 4 for each button) in each row to signal which button was 1st, 2nd, 3rd or 4th. But what I would really like to figure out next would be to this same thing but with an IC or some kind of micro controller but I have no idea where to begin because most of my research to do this so far has taken me nowhere...people have lots of ideas on the Game show type buttons and lights deal but not for what I am doing. Game show just shows and locks 1 button and like and I need to be able to make connection between which button was pressed in what order. Any help or further direction would be great.
Posted by netgoo2000 4 years ago
Hi. My kid (and I) have recently started messing around with Snap Circuits. We have a specific project in mind and want to design the circuit using Snap Circuits, then shrink it to fit in an Altoids box. Question: Is there a direct facsimile available of the integrated chips in the Snap Circuits box? Meaning, the same input voltage and current, where I can assemble all the matching components to my Snap Circuits circuit (switches, resistors, capacitors), and then just switch in the new (small) IC for where the Snap Circuits IC goes. This would also help with troubleshooting. Any thoughts? Here is the Elenco supplied schematic description of the Snap Circuits' IC: http://www.snapcircuits.net/downloads/ic_info.pdf Thanks!
Posted by BBBMMM111 4 years ago
Hello, Would it be possible for someone to send me some OpAmp IC's (8-pin DIP) with two OpAmps inside? (for free? :) ) They don't have to be power OpAmps, but just regular OpAmps with a Vccmax of at least 20V. I need them for some PWM projects I have. If you are interested or if you want some more information, please send me a PM :) Thanks in advance, Electorials
Posted by DELETED_Electorials 6 years ago
I need some help identifying some old parts... Google didn't find anything that I could tell. They are: 1) AMI 8029vi C11262 (Some sort of old dip style IC chip) 2) DIS1283 8004 (This is some type of display but I can't seem to find anything on it. Wanted to see if I could hook it to an Arduino??) Thanks for any help. Mike C.
Posted by mbcharney 1 year ago
Hi All, I'm new here so go easy on me :) I need to throw together a circuit to play an MP3 when a switch is closed (Think musical greeting card rather than iPod). The fundamental issue is a lack of knowledge re: mp3 playback on ICs. Is there a handy light-weight MP3 playback chip kicking around? Presumably I'll need to provide memory, an amp and various other bits. Does anyone know of an SoC that does something this already? I've seen the SOMO-14D (http://www.sparkfun.com/products/9534) but it seems to be very low quality and temperamental. Does anyone have any experience with this? If so, any recommendations? > Quality is important-ish - I know it's never going to sound like my Technics sound system but I'd like it good enough that a non-audiophile wouldn't complain. I'm guessing I'll need at least 128Kb/s for semi-decent audio. > Format doesn't have to be MP3 as long as the quality isn't _too_ low and there's an easy way to convert. > Small size (form factor) would be nice but isn't required. > If needs be, I can get PCBs etched _relatively_ inexpensively so that's not a major consideration. > Any suggestions for a good quality, small speaker would also be appreciated. Skills: I've got a degree in Electrical & Electronic engineering (but haven't touched a circuit since Uni) Budget: ~£300 tops (I'm hoping for considerably less) Time: Within a month or so. Many thanks in advance Basic
Posted by Basiclife 6 years ago
The photo shows what I'm dealing with: a sound module ($2.50 including shipping from China) and an automotive auxiliary power cord (cigarette lighter.) The sound module has a "play" button at the end of the yellow wires. The "black box" has two tasks: - detect loss of power on the 12V cord - momentarily connect the two yellow wires (as if the button switch had been pressed.) So far I’ve been told that some sort of relay and a timer could be involved, but since I’m not a Electrical Engineer, I don’t know the specifics. I know that in the automotive world, there are big, bulky relays, but I'm wondering if there are relays in the integrated circuit world? I really need specifics like part numbers and circuit diagrams. Thanking you in advance for your help.
Posted by willy41 4 years ago
Hello, It's a bit stupid to ask (I think), but essential to me. From all schematic I readed over intructables I never saw anything or anybody that cared for that. If a IC have a maximum and minimum current to respect ie: 6mA to 10mA, do we even care? Do I need to limit the current somehow? As I said, every schematic I readed never added any resistor or talked about anything relate to limiting the current on the VCC for the integrated circuit. I'm currently building a device that use one 555 timer IC in astable and a few others IC and they are all connected in parralel to the power suply. Thanks
Posted by sxdemon 8 years ago
Hi, I recently bought one sword with LEDS and I want to know how they control the LEDS (it have different patterns of lighting). They use a PIC or IC ? I open the sword and have a very small PCB board with the IC cover with a black solid coating my questions are: The toys use and IC or PIC? What is the difference between IC or PIC's? They control also the voltage of the LED (different color of LED have different voltage)? The PIC/IC is programmed in which language? Where can I found more resources about this topic ? thank you for any help Chris SWORD http://www.rinovelty.com/index.cfm/fuseaction/products.thumbs/cat/114/page/2/filter/pricerange%7Cany%7Cany/Light_Ups_Light_Up_Swords
Posted by christoys 6 years ago
Alright, so, i have this ic chip and want to do a project with it, but the problem is , i don't know what it does therefore i don't know what i can do with it. the writing on top of the chip says mc34063 and underneath it says 1110 please help me if you know what it does? i will put a picture on this thread. extra info: i salvageed it from a radio i believe
Posted by flubbersaurus 4 years ago
I need to know how to solder the leads of one components to the legs of another one(the Perf Board doesn't have pre-connected copper tracks)
Posted by wesie42 10 years ago
My scope has gone awol and I can't locate these chips anywhere. L2724 made by STI. They were apparently end-of-life'd. I hate the idea of a $4000 paperweight sitting in my garage. Any ideas where I can find 2 of these chips? My astrophotography is impossible till I get this fixed.
Posted by Dark Light 5 years ago
Video of RavelightPicture of RavelightIm interested in building a product that utilises coloured LED lights with multiple flashing and fading patterns.I have pulled apart a few LED products and examined the PCB's and the components and have a general idea of what is going on, however it is all new to me, and im unsure of the possibilities that exist. For example, i didn't know you could get pcb's so small...Basically i need the power source to be the small button cell batteries (up to 6 if necessary, though 3 or 4 would be preferable). With at least 4 LEDs of different colours (RGB etc). A similar design to what I want to make is a flashing LED light stick like people use at raves that I found. It has a button that seems to simply complete a circuit momentarily, and pressing it down again and again, scrolls through its 9 different flashing patterns.I have seen various different LED toys that vary on this, but are basically the same idea.The thing that I don't understand (on top of a lot of other small things) is what is under the black blob on the PCB? Is this something like a 555 timer? an IC? And how are these programmed to give all the different patterns? is it a microchip?This thing cost me $3 from a shop. three dollars!! cheap as....this is what I want for my product. can anyone help me out to understand?I can post a picture up in the next couple of days if people can't understand what i'm talking about.Thanks
Posted by noi noi 11 years ago
I'm working on a Metro 2033 cosplay costume and being the gadget-geek I am I'd like to make a working copy of the light sensor Artyom carries on his wrist. For anyone who haven't played the game (or read the book, I bought it today but I don't know it he's got the same thing there) it's basically just three LED:s (red, yellow, green) that light up depending on how well illuminated you are (red=fully illuminated=people will see you instantly and shoot, yellow=partly illuminated=people will see you unless you take cover, green=as good as invisible unless you give away your position with noise or flashlight). In the game it's abut the size of a 9v battery but flatter and for simplicity I'd like to keep it like that; I don't fancy carrying around an Arduino or something like that on my wrist. Here's a picture: http://bi.gazeta.pl/im/5/7534/z7534645X,Metro-2033.jpg So, my question is: Is it possible to make something like that small and simple enough to be stuck to a wristband?
Posted by Jur 4 years ago
Hi. My kid (and I) have recently started messing around with Snap Circuits. We have a specific project in mind and want to design the circuit using Snap Circuits, then shrink it to fit in an Altoids box. Question: Is there a direct facsimile available of the integrated chips in the Snap Circuits box? Meaning, the same input voltage and current, where I can assemble all the matching components to my Snap Circuits circuit (switches, resistors, capacitors), and then just switch in the new (small) IC for where the Snap Circuits IC goes. This would also help with troubleshooting. Any thoughts? Here is the Elenco supplied schematic description of the Snap Circuits' IC: http://www.snapcircuits.net/downloads/ic_info.pdf
Posted by BBBMMM111 4 years ago
So I recently bought a DS18B20 1-wire digital thermometer IC to use with an arduino. But when I hooked it up, I couldn't get any reading at all out of it. I have the VDD pin wired to 5v on the arduino, the gnd wired to gnd, and the data pin wired to analog pin 0. Any help would be awesome.
Posted by dudes 3 years ago
Hey I got this amp. Now at large volumes, there seems to be clipping. Even though the amp is 20w, my speaker is rated for 25w. How can I prevent it from happening, rather than never playing at high vol. Can it be done by AGC or Dynamic Range Compression or Noise Gate. In my case, which is a ready made pcb, how can I include such circuitry. Is it even possible. Also, while selecting an IC, what needs to be looked at that will suggest clipping would not happen, or which parts needs to be referenced from the datasheet which ensures preventing clipping. At large volumes, if I disconnect the mp3 player from the amp but keep the jack plugged into the amp, a high hum is heard. When removed, hum is lowered but not eliminated. Similarly, when track changes. What steps needs to be taken to eliminate them. All the time before actually getting into practical electronics, I was only looking at Power output, THD+N, Class, etc of amplifier. It is only after going hands-on, for the first time, that I can experience the real things which most matter. Appreciate for helping me become a pro. Thanks.
Posted by arjunmenon 4 years ago
I was designing a board that uses a bunch of the same chip and all of the inputs require a capacitor. For example lets say I have 10 identical chips with identical setups. Instead of having individual capacitors for everything to ground (except for the outputs) can I combine all of the ceramic capacitors and use a couple of bigger electrolyctic capacitors? So lets say I can have 1 capacitor for all of the identical inputs instead of 10 smaller ceramic ones. But for stuff like timing do I need individual capacitors?
Posted by guyfrom7up 10 years ago
Greetings! I'm looking to accomplish the following - Have (2) 5mm LED's go through the following patterns: (1) LED's Solid On / Full Brightness (2) LED's alternating blink (3) LED's off I would like to be able to press a single button and cycle through those presets - 1,2,3 I would like to make this as compact, least amount of parts, and low power requirements as possible. Please let me know if you guys could point me in the right direction perhaps? Rafael M.
Posted by rmarrero 6 years ago
I want make a screwdriver but dont want spand 10 pounds to buy a new one and take it apart for a circuit, i want make it under 2$, which IC does they use in the toy? 555 timer? can provide organial circuit desgin? thanks alot
Posted by EthanY 2 years ago
I recently came up with the brilliant idea (read: scheme) of constructing gloves with built in RGB LEDs that fade through colors randomly. I plan to sell these to ravers as they are usually spoiled rich kids (no offense) and I can fund my new found interest in electronics. My question is if anyone knows of any ICs that can control this without having to program it, like the LM3914 can work as a VU meter. If no such thing exists, then the cheapest alternative.
Posted by wootwootman 8 years ago
I need a sound playback/recorder IC for a certain musical instrument that I am building. 25 buttons will be attached to an ATmega644 microcontroller, and the microcontroller will tell the sound IC to play a different sound for each button. The problem is that I haven't found a chip that will store so many sounds seperately, so do you know of any???I've seen the Arduino Wave shield, but I am looking for something with not so many parts.EDIT: I have decided to use the wave shield design, so I don't need any more feedback, unless you have a really brilliant idea
Posted by -henry- 9 years ago
Sounds ridiculous doesn’t it? How can water possibly be turned into a useful fuel by just burning it? Sure we can use hydrolysis to separate water into its hydrogen and oxygen gases, and then burn the hydrogen gas as fuel, but that’s not what I’m talking about. Believe it or not, jet engines do it, they have used water to enhance engine thrust, so why not have IC-engines do the same thing? There’s a catch here, since only vapo-engines ( http://goo.gl/QQ42k ) are capable of performing this trick successfully, they must first be introduced into the design mix. Since IC-vapo-engines burn very effectively they run hot, and water would be used as a better alternative than injecting extra wasteful fuel to cool down the engine as is done in today’s engine to prevent knocking. Why don’t we just inject water in today’s engines you ask? Because they run so poorly already, that the water would extinguish the IC-combustion process. In technical jargon this is known as the ability for an engine to burn lean with an air-to-fuel ratio greater than ~15. Today’s engines can’t sustain a leaner combustion than ~22 without extinguishing themselves. By adding water droplets we further increase this ratio to unsustainable conditions. Unfortunately, this wasteful, richer burning keeps the engine running better by keeping the fuel cooler. In contrast, our vapo-engine is capable of burning unbelievably lean ratios of ~30+. Lean combustion means almost no pollutants and virtually green combustion exhaust products of only CO2 and water. No catalytic converters necessary here, as opposed to running today’s rich engines with their unavoidable polluting exhaust emissions and heavy reliance on catalytic converters. So the irony here is that since IC-engines already run ratty, let’s waste a little more fuel and run richer just to cool down the engine. This prevents engine knocking (the dieseling of an engine due to unwanted, poorly timed, premature combustion) which occurs from the pitiful amount of fuel that does vaporize and burn correctly. Sadly, engineers have cleverly learned to waste fuel for the sole purpose of keeping our IC-engines cool, above and beyond the engine’s normal water cooling system. It gets even better, as the richer the engine runs the more we need to rely on expensive catalytic converters to keep exhaust emissions in check! Vapo-engines also require cooling, even more than today’s engines, but their advantage is the capability to burn very lean. So instead of ridiculously injecting extra fuel to cool them, like today’s engines, we inject water droplets mixed in with the injected fuel vapor. The water droplets perform three functions; 1) they reduce excess fuel consumption, 2) they cool the engine walls to prevent pre-ignition and knocking which provides better combustion, and 3) they enhance the fuel-vapor detonation force created on the piston from the expanding superheated steam which further helps engine performance. So in a way we are burning the water to generate steam power like a locomotive.
Posted by RT-101 6 years ago
Looking for a Winbond Electronics ISD1110 voice record/playback chip for my project! If you have one and want to sell it to me please pm me or leave a comment! Thank you! -Stanislav
Posted by comodore 10 years ago
Ice for the competition is collected form gravel pits around Fairbanks. In the summer gravel is mined from old river channels. The resulting ponds contain little organic material. Additionally during nine month winter, temperatures range from +40 to -60F (+5 to -50C). These factors combine to create exceptionally thick clear ice. The following are pictures of an iced over gravel pit.
Posted by jesse.hensel 10 years ago
I have come to the instructables forum today in search for knowledge. So I have been working on a simple speaker system for my ipod shuffle, the speaker I used is quite old, but was the only one I found laying around. When I plug my ipod into the circuit everything works fine the only problem is that it is barely audible. Is there a way to amplify the sound so I can actually hear it without having to stick my ear right next to it? Pictures of my work so far will be provided. Oh also identifying the IC's included in the gallery would be of utmost help. Thanks in advance.
Posted by nahum45 6 years ago
Hi, all - first time posting. I have limited knowledge with electronics and have come across a scenario where I basically need a kill-switch for a cable with 9 ends. I can't find any sort of toggle switch (SPST, DPDT, etc..) that would accommodate that many wires. I started reading up on digital bus switch IC's. It seems a 10-digit one like this would work, leaving one unused. http://www.digikey.com/product-detail/en/74CBTLV3861PW,118/568-8418-1-ND/2765135 My question: is this the easiest solution? I simply don't know what all options exist, so any advice from someone more experienced would be greatly appreciated. Thank you for your time. -Caleb
Posted by calebpaul 3 years ago
I'm building a DIY, small AC unit using a desk fan, ice, and an ice box cooler. The fan I'm using is the one below. http://global.rakuten.com/en/store/e-kurashi/item/1468640/ I'm planning on making tubes connected to the sides. I will insert the tubes inside the cooling box (I'm not sure where is best... Above or below the ice?) I'm also thinking about where to put the holes for the air to go in. Should I put them below the ice, above the ice, or does it not matter? Also for the ice: salt water ice, or frozen bottles in salt water ice mixture, dry ice, or just plain ice? What do you think? I'm hoping to have the ice last the night.
Posted by daiquirikiss 5 years ago
Every now and then I order a sample of an integrated circuit from companies such as TI, Atmel, or Microchip. But can I get too many. If I order too many do you think they will catch on to my using of their free samples for hobby use and not research? I stopped ordering because I am afraid they might start charging me for all the chips I ordered. What's your opinion?
Posted by gimmelotsarobots 10 years ago
The World Ice Art Championships are held in the Ice Park in Fairbanks, Alaska. In 2009 the venue may move to North Pole, Alaska. Each team is provided with a site on a looping trail through the park. The sites are surrounded by small black spruce are double as R.V. parking in the summer. In 1999 I rented chainsaws from the blue bus for the competition.
Posted by jesse.hensel 10 years ago
I have a little bit of dry ice and I can't think of what to do with it.I have alreadythrown it into the poolmade bubbles with itpointed my laser into itfroze a quarter in ita bunch of other things that I cannot rememberAny Ideas? I have an hour left with itNO DRY ICE BOMBSthey are illegal you know
Posted by n8man 9 years ago
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 11 years ago
Hi all, I am looking for an ice/ snow melter that won't harm concrete or other surfaces, is safe for pets and can be easily made from household products or at home. I would like to be able to apply it before or after ice forms. Thank you
Posted by feign 11 years ago
Http://andthatsthewayitis.net/2011/05/17/salt-does-not-melt-ice/ thought about running a chainsaw to remove ice from roof gutters. rethought that. sodium chloride? corrode metal gutter and hurt plants. mag sulfate? have it on hand, but above link indicates it wont work. would it work if baked to drive off h2o? stuf comes hydrated. calcium chloride? directly on metal?
Posted by Toga_Dan 3 years ago