Electronic

Can I use Arudino Uno instead of  the Arduino pro mini 328?  I am interested in the following Project so please help    http://www.engineersgarage.com/contribution/intelligent-letter-box-using-arduino-and-gsm

Topic by RanjitE1   |  last reply


Electronics

Hey everyone does anyone know any good ideas for making a portable ham radio transmitter and receiver that can fit inside an iPhone case (the cardboard case you buy them in)? It would be good if it was a kit, but it would be better if it can be made using a breadboard and other bits and pieces. Anyone have any ideas?

Topic by simonyu   |  last reply


Electronics

I am currently building an RC hovercraft, I plan to use a single 12 volt 2.1 amp hr lead acid battery to feed both the lift fan for the skirt and the power motor for the drive. However the fan for the skirt is 12v 0.3 amps. How can I reduce the feed to the required amperage with out affecting the other feed from the same battery that will power the drive

Topic by Seafarer77   |  last reply


Electronics Book

I want to start a few projects using a Arduino board and know what I'm going to do. The problem is I do not understand some concepts and parts with electronics. I was woundering if anyone could recomend a decent Electronics Book to help me grasp concepts and what specific parts do. Try to keep it in the $20 range because I have a gift card to amazon. Once I document my project I'll do an instructable.

Topic by acer73   |  last reply


Beginner in Electronics? Answered

I am a complete beginner when it comes to electronics. I would like to build functioning machines eventually, so does anyone know how exactly I can get started? Are there any specific books? Thanks, freeza36

Question by freeza36   |  last reply


Electronics help

I need an easy way to distribute power 2 way and when the on button is switched the correct goes one way and when off then on again it goes another? Thanks

Question by Camyo   |  last reply


Electronics Help

Hi ppl,I am currently making a variation on this circuit:http://www.edn.com/article/CA257052.htmlhttp://www.edn.com/contents/images/257052f1.pdfI understand how it all works but do not understand the principle of the inductor capacitor used (bottom left), if anyone could give a brief explanation of this (links are good too) and also some formulae i would b e very greatful!!thanks

Topic by drummer ian   |  last reply


Beginner In electronics

Hey, I've just started getting into electronics, it interests me alot. I have a pretty good understanding of each individual component, but don't have a good one of how they work together, so do any of you know of a good 'circuit cookbook' that has easy circuits with explanations? That would be great. Also, what components should I always have around if I'm just tinkering? I have a bunch of resistors (1 ohm to 1M ohm) and a bunch of capacitors (.22 UF to 2200 UF).

Topic by Jackhole   |  last reply


Books on electronics?

Hey guys, ive been a big fan of the site for a long time but have only just signed up. I just wondered if anyone could recommend to me some good books/guides on basic electronics and circuit building. Iv always been interested in the way electronic devices work and after viewing some cool looking instructables on here decided i want to try and learn about how to make them. It is also fueled by my interest in physics which i want to pursue in university. Any advice would be much appreciated, thanks.

Topic by The Stans Mysterium   |  last reply


Sounds with electronics

So here goes, I am trying to figure out how to make basic sound generating machines. Preferably generating a sound that can be modified with a potentiometer or something of the sort. The principle is simple, these will be for messing around, possibly, if the result is good, using in some random recordings of mine, so most of the machines will have a jack out plug. Anyhow I was wondering, what, in a circuit, actually makes sound, what is the base of all sound generating electronic devices (synth, analog stuff, beepers) what actually creates the wave, the current that is sent to the speakers? Have I just answered my own question by saying current? Is it just the electrical current, and putting random resistors, capacitators, potentiometers and stuff changes the sound that is generated? Any help is more than welcome! and if anything good comes of it, I'll post some sound clips!

Topic by gavox   |  last reply


Electronic schematics?

I need a free electronic shcematics Program that checks my circuits.

Topic by OrIsIt   |  last reply


Is this an electronic cigarette ?

A friend of mine found this object in her son's room, he's 16 years old. She think it is a smoking device or something (electronic cigarette). Thank you for any help.

Question by NovakD   |  last reply


For electronic n00bs

This topic is made to help all who don't know a lot (or even anything) about electronics. Here people can ask simple questons without opening a new topic.

Topic by Dantex   |  last reply


Electron gun

How can we build a heater for electron gun? can we use tungsten filament of lamp for heater ? please tell me how to build heater?????????????????????????????? thank very much

Question by esfand_mhs   |  last reply


Electrons and Photons? Answered

Under the right circumstance in a synchrotron for example, electrons accelerated to very high speeds can be made to give off photons. Apparently to preserve the laws of conservation of momentum and conservation of energy. i assume this means the photons in this case have mass to allow the electron to obey these laws so does this mean: 1. Electrons contain the photons 2. Electrons generate the photons 3. Photons are spontaneously generated by some other effect 4. The electrons are dragging photons along with them. Why do i have a feeling I am not going to understand the answer, if I could I probably wouldn't have asked the question!

Question by rickharris   |  last reply


Electronic Disabler?

Is there something that exists that can wirelessly short-circuit electronics? I haven't found anything on Google. I'm pretty sure i read something about a guy making something called an F-Ray that did this, but that was in Tesla's lifetime I think. In short I want to build something that can over-voltage or short circuit electronic devices/machines. I don't care if it ruins them or temporarily disables them.

Topic by Jordo   |  last reply


An Electronic piston

Please guys I need a small 12 or 24 volts  device  that can give me a forward movement when it's powered on and backward movement when it is off or vice-versa. Just as pneumatic pistons work, but I need it to be electronic. please help it is very urgent. thanks

Question by victorious4live   |  last reply


electronic "key"

One more forum post and then I swear I'll take a break!!! I would like to build a sort of a "secret box," where access would be had through a sort of electronic "key." A few specifications: (1) the box would be permanently out of doors, and (2) the "key" would be simple enough that I could give interested parties the schematics and tell them to make one. I'm thinking a USB connection would be a natural, but I'm not an electronics person, so I'm open to all suggestions. Thanks!!!!!

Topic by Purple Chez   |  last reply


micro electronics

Basic of this post is where e to buy micro size electronics for micro flying drones which are insect size? I asked arduino and raspberry pi, no answer yet.  in this post : https://www.instructables.com/id/3D-Printed-Ornithopter-Micro-UAV-Drone/     there is electromotor which OP claim that was used also by inventor of little flying drone...regarding arduino uno board i am not sure that was really used by inventor, please see pictures and videos on youtube....so if someone knows please post where to buy such micro size electronics. Thank you  

Topic by ruma29   |  last reply


Electronics Noob

Hi, I was thinking of making something that will light up one set of LEDs when you push the button, turn off, and then light up a different set when the button is pushed again, and they alternate each time. Do they make a switch for that sort of thing?

Topic by octochan   |  last reply


Electronic Circuit

I have a spst relay(operating voltage-12v) using for switching the solenoid valve(24VDC and 0.5Amp) which connected through 24 V battery. relay is again connected to the transistor BJT NPN . So please suggest me that which transistor is most suitable.

Topic by jay_3189   |  last reply


electronic switch

Hi, i'm a bit new to electronics. I was wondering if its possible to turn on the flow of current by another electrical signal. Yes, i know about transistors and relays but these switches turn off as soon as the second current is stopped, how to make this change in switch permanent, i'll be precise, i'm working on a laser alarm system, and it works fine, but the thing is that when i block the laser, sure the buzzer goes off, but when the obstruction is moved, the buzzer turns off, how can this be kept on until turned off manually by a switch. i know it must be quite simple but i dont know, please help thanks

Topic by walee    |  last reply


Electronic catapult?

Okay. I'm going to make an electromagnet to hold the spring in place while it's compressed, and then as the power turns off, the spring will release and shoot the catapult. However, I'm not an engineer-- I'm making this for tech class. How should I design the catapult so that this will work as a triggering mechanism? In what way should I set up the spring and electromagnet relative to each other? Thanks in advance.

Topic by camiheall   |  last reply


Electroplating for electronics

An idea has occurred to me about how PC boards are currently made. The normal process now is a destructive one, where unwanted copper is etched away. What about figuring a way to electroplate the traces onto a substrate? Various toys and model parts are made of plastic, and yet have been electroplated with a cheap form of chrome. Why not apply that to PC  boards? I'm thinking that a photographically negative mask could be used in a photo-sensitive process to apply the conductive surface to a heat resistant substrate, and then the copper traces could be electroplated on. Anyone have any thoughts on this, primarily at a hobbyist level? **note - cross posted in burning questions.

Topic by charlie_r   |  last reply


Electronic Toolkit

I do some work with the FIRST Robotics kids and it is amazing to see what they are doing.  Big problem though seems to be a general lack of electrical test equipment.  They don't really have the money to buy oscilloscopes, function generators, CAN and I2C analyzers.   So I got one of the M3 Discovery boards from STmicro and it is really cool.  It has four 5MS A/Ds on it plus a whole host of other features(CAN, I2C, Serial etc.). http://www.st.com/web/en/catalog/tools/PF254044 So it got me thinking. Why couldn't we turn one of these chips into an "All-In-One" electrical toolkit and keep it cheap($50-$60, BOM ~$20).  It would be fairly easy to turnkey. I threw together some simple specs, what do people think. 1) Will supply general use drivers so a user can use the app or write their own. 2) Oscilloscope   a. Two Channel     i. 2MHZ of Analog Bandwidth per channel     ii. 10MS/s per channel     iii. Trigger on rising edge, falling edge, on-command, run-stop actions     iv. Datalogging for extended time periods at up to 10hz per channel (data stored directly to console),  maybe higher rate will  just have to see 3) Serial – 2 Ports   a. Multi selectable protocol w/slew control     i. RS232, RS422, RS485 4) CANBus – 1 port 5) I2C – 1 port 6) SPI  - 1 port 7) 8 Discrete User Selectable 8) Function Generator   a. Two Channel      i. 1MS/s small signal change      ii. 250kS/s full range change      iii. 0-3.3VDC buffered output  9) PWM - 4 Channels

Topic by ase4542   |  last reply


what electronic part is this??

What electronic part is this .What is it used for and some more details on it?!

Question by imakethings   |  last reply


Electronics and Microcontroller guide?

Is there a a basic intro to electronics and microcontrollers? I know about the basic components, but no clue about microcontrollers =) Thanks!! Wes

Topic by wesie42   |  last reply


Wholesale electronic components???

I was hoping someone here would know of a place i could buy electronic components at wholsesale prices. I'll buy bulk. The reason i say this is a friend is setting up an electronics store, but at the moment it's looking like he'll have to buy-in at retail, which'll leave his sales prices very high. Please help me out. Tom

Topic by lifelong-newbie   |  last reply


Unreadable electronics diagrams?

I see only unreadable blurred electronics diagrams on this site. I can not read component values​​, not even when I enlarged the pictures, not very useful. Is there a way to fix that ?

Question by louis.m   |  last reply


electronic project problem

I am making a project  and i want a  way to make two devices that one of them has an LED on it and when the other devices goes out of a certain range 30m lets say the LED either comes on or goes of and i dont want them to be  connected.It's for a school project and i wanted it to be small so I could attach them on to bicycles let's say and then if my brother goes 50m ahead of me the LED will come on/go off on his device so that he is aware of the distance between us I know nothing about electronics at the moment, this might put you off helping that's okay  i hope that makes sense to somebody and that someone has an idea. thanks

Question by vitusvenon1   |  last reply


What are these electronic parts for? Answered

I was taking apart this toy car called a formula fueler from hot wheels and found these to parts that look like leds but on a board. They each have a led thing and two wires on has red and black wires while the other has  purple and black wires. The red and black one has thes letters on it "LED REV:03 B4048-0030050" and the one with purple and black has "PHO-TR REV:00 C4331-003-5000". What are these and what are they used for? Should i keep them for future projects?  

Question by redlizard5   |  last reply


Beginning electronics guides

I'm looking for some help in how to learn electronics, meaning anything from circuits to arduino. If anyone has any info that can help me learn this it would be greatly appreciated.

Topic by acadena2   |  last reply


Beginner Electronics Information?

I'm interested in taking on a few of the projects in the electronics category, particularly the high voltage compilation. Obviously though, this is some pretty dangerous and complicated stuff (maybe just to me), so anyway, I was wondering if there were any books,  web pages or guides with basic starting out info that might help me understand what those guides are talking about? You probably should assume I know nothing about electronics, because its more or less true.

Topic by Snowball tlwcb   |  last reply


Free Electronics Magazine

I want to share a free electronics magazine that is available as a downloadable PDF file or online. The name is Electronicsmaker. I hope is helpful!

Topic by blkhawk   |  last reply


Basic Electronic Safety

Hello all! I'm beginning down the route of hobbyist electronics. As to basic safety precautions I'm really quite unsure. I know inside many electronics parts and devices (For example, a TV one would strip for parts,) there are many nasty chemicals. I don't want to get lead poisoning or any other sickness. If you could point out some safety precautions, I would be incredibly grateful (Ex. Always wear gloves, wear a mask when soldering, when stripping a TV...., etc.). Thanks for your time and help!

Topic by I Am That Guy   |  last reply


Help me!!! (electronics)

Can somebody tell me where I should solder cabels to extend this switch (keep this one and add another). http://img443.imageshack.us/i/dsc00480w.jpg/ http://img693.imageshack.us/i/dsc00479cm.jpg/

Topic by Tubehacker01   |  last reply


Help electronics beginer

Hi, I am trying to learn electronics and have few questions about some confusing stuff: - If one is measuring current in a circuit, he is supposed to connect the multimeter into the circuit. Ok, how do you measure current in the arbitrary track on the PCB? Are you supposed to cut the track open, just to take one measurement? - I have bench power supply, on which one can select voltage and current. If I connect toy electro motor it runs nicely. Power supply shows 3V, 0.17 A. But when replace electro motor with 1,800 ohm resistor, no current is drawn. If I insert multimeter between the resistor and terminal, multimeter shows that no current is flowing. Why there is no current flowing when resistor is connected and there is current when motor is in ? regards, dejan

Topic by COROVICD   |  last reply


Trouble Starting in Electronics

I want to start getting in to making electronics, but I can't seem to know where to start. I recently bought an Arduino Starter Kit hoping to learn, but while I can understand and do all the listed projects, I can't comprehend why things are the way they are. For example, I don't understand how to choose the right resistors for lets say LEDs. Sure I could just pick the resistors I need for one of the projects, but that isn't going to help when I start my own projects. I feel that my main problem is that I do not understand electricity and circuits, but I can't seem to find good reference material to learn from.

Question by Aetheron   |  last reply


Electronic counter help

I need some help, the basis of my invention is that my friend is always having countdowns (going away, birthday ect,) and i wanted to build a countdown clock for her. I was planning on using the countdown kit from qkit http://store.qkits.com/moreinfo.cfm?Product_ID=1679 and was gonna wire it up with buttons so she can manually move the counter up/down. my question is for saving power how wud i wire it so that it wud turn on when there is light but shuts down when there isnt (ex. when she opens her locker it turns on, closes it, no light, so it turns off), and i was also gonna have it say her name so any suggestions on where i can get a good easy to bulid/program led text screen,

Topic by Jfaranda7   |  last reply


new electronic project

Have just started a new electronics project that i have been thinking about for ages. this is the basic idea, i am going to give someone a christmas "present" at a party which will , when i press a remote button, deliver a small 450 volt shock( very low ampage, i've made shockers before). i am disassembling a remote control car and will fit either a relay connected to the shocker circuit or perhaps the shock circuit itself to where the motor was. assuming all works correctly it should be very funny, i will be working on an instructable of how it was done. thanks for reading, tell me what you think.

Topic by resistanceisfutileiflessthan1ohm   |  last reply


what is this electronics component?

I am trying to repair/re-create and old Tandy music/sound device. I pulled this part out of the circuit board and I have no idea what it is. There is no number or letter marking, and no color code (its all black). The only clue I have is it is labeled "CR 1" (or possibly CRI) on the circuit board.Here is a link to a photo of it.http://i257.photobucket.com/albums/hh238/drbutcher2112/n609006814_3020117_5452784.jpgThanks!!

Question by enigma42   |  last reply


electronics component question

So i have these lcd monitors, and one of them started behaving poorly. it would black out for a few seconds from time to time, and the power button stopped working. after looking at the board i noticed that one of the components had exploded. i rubbed away the ash and took a picture, which you can see on the left. on the right is a board from another monitor of the same model. i am want to just buy a new component and replace it, but i have no idea what it is, and the information printed on the top isnt helping me any. as seen in the picture on the right it says 'c u 7 A A O S' but again, i dont even know what it is. some kind of amplifier or signal processor? i also noticed that a similar but larger version of this next to it, which you can see in the picture has a slightly differnt number on either board. i will just assume thats unimportant. i did some heavy searching but came up empty handed. if anyone can help me identify that chip and -be still my heart- where i can get a new one, i would be indebted.

Topic by polkadott   |  last reply


Standardized Electronic Components?

Hello all, I was just wondering about finding electronic components. Some parts, like resistors and capacitors, seem pretty easy to sort out as long as you aren't looking for something out of the ordinary, just find the values you need rated for the wattage, etc. However, in the case of transistors and things like that, I am always seeing many different numbers (people say "a such-and-such transistor, like a {serial number}". Is there some general standardization for these parts? Or at least, some nearly universal sourcing that is considered a "standard"? I only wonder because trying to find components can be a real pain. I have a transistor, I know it's an NPN Darlington transistor, but that's about it. Others that I have salvaged I don't even know that much about. Any explanation or links to sites that explain these things would be much appreciated. Thanks in advance for any help!

Topic by victus_maestro   |  last reply


Learning Electronics -- Resources?

Hello! I'm a 13 years old geek. I am good at programming and the software stuff, but doesn't know anything about electronics. When I see Arduino projects or other robotics/gadget projects here at Indstructables, I feel very sad because I don't know the nitty-gritty. So what are the resources on web available  where I can learn about electronics, robotics and the likes?  I know there are many books, but they're more of theory which takes a college-student to understand, and I'm not that. I want the books, websites which makes us understand these a little simpler way with practical stuffs too. Please list any website or tutorial you know. I am also eager to make those hexapods and robots.  Regards Jack

Question by jackraj   |  last reply


Is this electronics schematic correct? Answered

Hello, I have drawn this simple schematic and I am wondering if someone could look at it and see if it will work. The thing I am not sure about really is if the transistors are connected in a way that will make them do what I want them to. This circuit is designed to be off, then come on and stay on with a single push of the momentary switch, then turn off and stay off if something blocks the light to the photo-transistor for an instant. ****** I have updated the schematic based on the comments I got. The decision was that the circuit would come on by itself without a push of the momentary switch. The new schematic is the first picture, the old schematics are the second and third pictures. I have a breadboard and some parts for the project this circuit will be used on coming in the mail, so I can start trying this out when it gets here. But for now I am still not sure if this is right, I don't have much experience with transistors. Any advice is appreciated.

Question by Jaycub   |  last reply



Electronics parts sources

Anyone know of a good electronics parts source that takes PayPal?

Topic by Sailing_Nut   |  last reply


favorite electronic kits?

I was wondering if anyone had some favorite electronic kits? There just seem to be a lot out there these days and a lot of places selling them. I'm just curious.

Topic by randofo   |  last reply


Sampling electronic components? Answered

I can not find on websites where to sample stuff! can someone give me a link to an online component supplier that has all kinds of electronic components that I can actually sample?

Question by Adum24   |  last reply


Need Electronics help

Anyone know a simple circuit that will let me test to see if my transistor is burned out?

Topic by Shadowmang   |  last reply