PCB traces? Answered

so if i have a high current device (inductor) on a pcb? it will run somewhere around 2 amps of power. Is there a minimum trace width to keep my pcb trace from being blown up?

Question by astroboy907   |  last reply


cookie tracing.

Can a cookie be linked to my ip address? i kow my ip can be traced but can i be linked to a cookie placed on my laptop by a website

Question by    |  last reply


How do I trace a 2D shape in SketchUp? Answered

It seems that the only people who make 3D models of 2D plans don't use SketchUp, but I have to use it for this project. I'm trying to trace the plans for my Sig Tiger in Sketchup, but it only lets me make 3D shapes. Is there some trick that I'm missing?

Question by CameronSS   |  last reply


PCB Trace Width Questions

Hello instructioners, So i am working on a PCB to use my XBOX 360 power supply as a standard 12volt 16 amp without hacking it apart. I've taken the female plug from a dead Xbox and I've recreated the layout in ExpressPCB. my only issue is being that its 16 amps @ 12volts is the trace widths to hold that much power are ridiculously wide we are talking 7mm or there abouts. I used several different online calculators to determine trace width.  My question is..  how small can i get away with for traces and still get 16amps.. is there a way of bridging the front and back side of a 2side PCB to allow for more amperage on smaller traces? i am really at a loss here. since my PCB is set at 38mm by 38mm and the connector size is 27mm long by 23mm wide. with 7mm wide traces i can't connect all the power pins together and all the ground pins together and route them out. Now i realize the 16amps is max draw but i'd like to plan for a max draw situation that way i feel confident enough to not have to check it all the time to make sure its not melting. Below is an image of the current board in Express PCB the labeled Thru-hole are connections i will need to make for this all to work. the other remaining holes are for mounting the female jack securely. The three yellow boxed connections are 12v+ The three greyed boxed connections are gnd ENG is bridged to +5 to make the XBOX PSU provide 12v

Topic by jgosselin   |  last reply


Circuit board etching traces? Answered

I want to learn how to etch my own circuit boards but I'm not sure what to use for marking the traces. I've heard about using a sharpie maker, which sounds pretty easy, but does it really work? To me it seems like it would come off from the acid.

Question by Arya42   |  last reply


how to trace ip ground visual location?

I want to trace ip of one email address. but i done now i want to know the visual mean ground location of the ip. how i can know plz help me

Question by    |  last reply


PCB milling: holes missing traces?

Hi! I'm milling PCBs with a CNC and some of the holes are drilled in the wrong spot (outside of their traces.) In a given piece of code, it's always the same holes that miss. Does anyone know how to fix this issue?

Question by jg156   |  last reply


How Can We trace Mobile No. location with out using GPS ?helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp? Answered

You can get so many website who tell about whos company network of Mobile no. and where connection was taken but no one give you exact location , running location of mobile no.

Question by stardks   |  last reply


formula to work out pcb trace size?

Hi. i am going to be making pcb's for some of my projects wich will include different voltages, amps etc. i am new to pcb making (although i have designed some in the past) and want to know what size i need to make my traces so that they are safe, for example: a 9v 500ma circuit will use smaller traces than a 240v 13a circuit. i was just wondering if there was a formula or website for working this out? thanks in advance - luke

Question by ljarrald   |  last reply



Can ink be used to trace a PCB for etching?

I will be making lots of PCBs. I have access to silk screen shop. I was wondering if there is a type of ink or paint i can silkscreen the traces with, rather than using positive coated boards, which cost more.

Question by PuffMag1cDrag0n   |  last reply


May a CD/DVD I created on my PC tracked back?

Does a CD or DVD created on my PC/notebook contain any traces of me. Is it possible to find who created a CD/DVD

Question by    |  last reply


How do I trace/log software install on Mac?

I need to install something from a dubious source on my Mac, and be able to remove it COMPLETELY including all system file changes and links. Will Time Machine be enough to revert any changes? If not, what is the best way to log all files written by the installer?   I thought of using lsof or opensnoop, but I'm not sure which is better for my needs. Thanks! 

Question by Morgantao   |  last reply


How can I track my car GPS position on home PC?

Hi, I got GPS fitted in the car. Is there any way I can trace my car position on my computer screen at home?. For example, while I'm driving on the road, Is there any way my family members can see my car position moving in real time on Google maps. If yes what sort of hardware or softwares required. I would appreciate any pointer or help. Thanks in advance. Kevin

Question by    |  last reply


rewiring keyboard matrix?

I want to know if it is possible to rewire the traces that go to the numpad on a keyboard so that the numpad section can be cut out? I've seen some boards where this is done but no explanation was given of what's going on. The trace that is supposed to go to the numpad keys should be rerouted back somehow, I am guessing.

Question by phillyj   |  last reply


Why is the circuit so squiggly? Answered

Hi all, Something that's been bothering me for years (I clearly have no life)... Why are traces on  printed circuit boards sometimes very squiggly, when there's an obvious shorter, straighter path. I've attached a picture of a PC RAM card that shows what I mean. Thanks!

Question by Morgantao   |  last reply


v-i curve tracer? waiting for the best answerer Answered

i want to build this simple v-i curve tracer circuit at the page.. http://freecircuitdiagram.com/2008/09/06/voltage-currentvi-curve-tracer/ on the same page, they have shown different traces of diodes,capacitors, transistors... what i am thinking is that if i connect this tracer to the pins of any ic, would this damage the ic or show v-i trace of that ic or of  those two pirticular pins to which i connected the probes?

Question by hussainb   |  last reply


New software traces 3D models from video footage (yow!)

VideoTrace is a pretty sick new bit of software in the prototype phase that's being developed by folks in Australia. By placing and fine-tuning points on video footage, the software can create a 3D model with textures. Now that I know about it I wish they would hurry up and release it.In their words:VideoTrace is a system for interactively generating realistic 3D models of objects from video models that might be inserted into a video game, a simulation environment, or another video sequence. The user interacts with VideoTrace by tracing the shape of the object to be modelled over one or more frames of the video. By interpreting the sketch drawn by the user in light of 3D information obtained from computer vision techniques, a small number of simple 2D interactions can be used to generate a realistic 3D model. Each of the sketching operations in VideoTrace provides an intuitive and powerful means of modelling shape from video, and executes quickly enough to be used interactively. Immediate feedback allows the user to model rapidly those parts of the scene which are of interest and to the level of detail required. The combination of automated and manual reconstruction allows VideoTrace to model parts of the scene not visible, and to succeed in cases where purely automated approaches would fail.Check out the video at VideoTrace's site. It has one of the coolest uses of copy-and-paste ever.via boingboing

Topic by fungus amungus 


Someone is lurking on my life and I need to trace their IP address

Meh. Okay. So apparently in 2009 I sent nudes to my boyfriend, who then spammed them to various sites after we broke up. All in all, someone from Australia who knows my current boyfriend, is threatening that hes going to post these pictures up on websites and link them to my boyfriend. Now, I don't really care because it was in 2009 and we all have bodies and its not a huge deal. Just I was 16 then and I don't think nakkie pictures of 16 yearolds should be on the internet. so, he is harassing me on skype and I was wondering if I could get his ip address. I read some posts about this and they didn't seem too conclusive. I am just curious.

Topic by ki.bear   |  last reply


Can someone trace all the calls, text Msgs, social app Msgs from my phone? Incase yes then how?

I want to know if someone can trace all the details of my phone and incase it's possible then how do I get rid of the same.

Question by Rikesh333   |  last reply


Mach3 not following code? Answered

I am trying to mill PCBs, but when i do so, some traces vanish because the cnc moves along the same y-coordinate twice instead of leaving a trace. its always the same traces and only some of them. Does anyone know what's going on?

Question by jg156   |  last reply


How do you trace electric wires in a wall, without tearing the wall apart?

I have a wall switch that I can't figure out what it is to. I have taken the front plate off and the switch works. There is electricity on the wires leading out of the box when the switch is on. Is there a way to trace the wires through the wall?

Question by Juliusredwings   |  last reply


I need some PCB help

I'm trying to help a friend make a PCB for a project of his, but I've never made one myself. Using westfw's design rules in Eagle Free Edition, the board is riddled with jumpers, but there are only three with the default-width traces. I ask you, O wise Instructables community, what should I do?We were going to use the iron-on laser printer resist method, but that won't work if it is too sloppy to make thin traces. How thin can the traces be made with this method for a beginner? We also are considering using this film, in hopes that it will be a little easier to use...does anyone have experience with it?The other option that comes to mind is transferring everything to ExpressPCB instead of Eagle, in an attempt to make a bigger board that could use bigger traces.

Topic by CameronSS   |  last reply


Hack A PCB

Is there a good way to solder or just connect wires directly to traces on a one sided PCB?

Topic by Doug Costlow   |  last reply


Oscilloscope Features

I would like to buy an Oscilloscope but don't knowing what features are essential to have and what are not.  There is so many different way to buy one, 60Hz  100Hz  200Hz   400Hz. I see digital and analog scopes. 2 trace   4 trace among many other options. What would be the key things i would want to try and look for in a scope? 

Topic by WWC   |  last reply


how do i build a led lightbox?

Need to know how to build an led lightbox for tracing artwork.

Question by gsbuck   |  last reply


Circuit tracer???

Can anyone tell me how to make a device that can scan and trace an entire electronic pcb and give a schematic result ???

Question by 10sicnarf   |  last reply


-12v leads to GND?

First off, i apologize for asking so many questions. google couldnt tell me a single thing about what i wanted to know, which was how the -12v is created and why a computer needs it. so i turned to a broken power supply to see is the -12v connects to a IC of some sort, which i would assume creates the strange voltage, confirmed by a datasheet. i completely traced the traces with a multimeter and at one point a capacitor went to ground close to where the -12v connection is on the board, after an inductor of some sort. the trace continued, and lead to a pin on the transformer, much to my disappointment. BUT that same trace was directly connected to ground, so now i am confused, does the inductor type piece createthe -12v? there was a diode as well, but i thought nothing of it or its place on the board.. i have a feeling i should have, shouldnt i? fed up and confused by the power supply, i turned to my motherboard. where the -12v leads to a smd capacitor and then traces from the capacitor, to ground, and nowhere else as far as i can tell with a multimeter and a dark blue motherboard. then i bring up the picoPSU, how do they make the -12v, if it is even made? is there a chip responsible? or a inductor like i found in the power supply? -5v has been omitted form power supplies, so im assuming that the same can be done by -12v, right? and wouldnt you get a -v type measurement if you put the + test lead on the - terminal and vice versa?

Question by zack247   |  last reply


password hacking with a usb?

How do i hack a password but not harming,deleting,or leaveing a trace that i hack into a computer with a usb without internet and without causeing a virus

Question by 1997589   |  last reply


How do the buttons on a calculator work?

My calculator has these black lines (under all the buttons) that are very close but not touching in wavy designs right on the PCB. How do these buttons work? Is there a way I hook up a SMT push button to this? Like I mentioned before, both my calculators have these black traces. Is this a covering over the copper? How would I get to the actual copper? Do I try to sand off the black?  Thanks!

Question by HavocRC   |  last reply


How Can We get MAC Address with the help of IP address ? How Can We trace IP Address ?

Hi , Suppose you got any harmful Email and you are getting continue same mail So this will  not good for you . So Can We trace IP address by Email  and IF We got IP address of system , So with the help of IP Can We know MAC address of system .......... I am asking this question because this our daily routine problem and with the help of we all people can get out with this problem .....  

Question by stardks   |  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


Solar cells and the environment

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


how to protect mobile phones using rfid tags?

We have plenty of mobile phones used inside our office for testing and those need to be traced if it stolen or hand carried by outsiders,is it possible to use rfid tags to track those phones in exit points using rfid readers

Question by    |  last reply


Throwie concept

Would it be a good idea to solder one led leg to a battery, and the other to a magnet, the put a tab between the two? Has this been tried before? I want to make a few as "flares" for airsoft. Thank you for your help.

Topic by Trace II   |  last reply


TI-83 Buttons not working

On my TI-83, the bottom two rows of keys do not work. I took it apart an did the 'Contact Cleaner' but still no luck. Actually, the bottom rows and the 'trace' 'graph' and 'arrow' buttons do not work. Do I have to replace the entire board?

Question by speedinc   |  last reply


Where can I get a schematic for a Chamberlain 5200 UBC garage door opener ?

I know the remote control is working as when I push the open/close button I can go on the main cct. board and see the signal on pin 14 of the LM2902. I can also trace the signal to pin 12 of the micro. The micro should do several things,  check whether the door is open or closed, apply power to the relay motor, apply power to the relay motor to open or close the door. The controller works in the manual mode ok, i.e. I can open or close the door, turn on or off the light. It is very difficult to trace the circuit board as it has a ground plane on the top of the board and SM components on the bottom side of the board. I am unsure of two things, first the signal going to the micio is about 1 Vpk-pk and not the normal logic level or 0 and 5v, but if this input to the micro is set as an analog signal then level may not be an issue. Secondly I cannot determine what output pins on the micro control the power relays as it is almost impossible to trace the cct.    Anyway any help would be greatly appreciated ... thanks in advance and take care ...Vic

Question by lazerspot   |  last reply


Is it possible to make a Beowulf Custer with Arduino?

Is it possible to make a small cluster computer using Arduinos? It has been done with Pi, but could it be made with breadboard Arduino? I read about I2C and it seems viable. Anyone had tried it yet? Awaiting some reply Trace

Question by Tanmay Das   |  last reply


PCB trouble?

I transferred this circuit to a circuitboard, but it didnt work. So, I tried just taking an led and soldering it to a pcb, but when I touched both leads with a battery, nothing happened. I didnt not clip the leads, I knew the cathode and anode. I was worried that when I put the led on it, I burnt it out from the soldering heat. So I desoldered it, but when I tested it OFF the pcb, it worked. The traces it was connected to was NOT connected to anything else. Any circuit I try putting on a pcb never works, none of them. Even when I just tried soldering a buzzer on it and connecting it to a battery, it only worked when it was off of it. I cant figure out why, but I am really frustrated about this. Tell me if you need to know anything else.

Question by 101yummYYummy101 


Water-damaged PCB repair

So water leaked in to the General Electronic Module (GEM) on my pickup and now it's acting all funny. A/C runs when the ignition is off, randomly switching to 4L, airbag light chattering on and off, etc. I want to try and repair it. My intuition is that it just acts up when there's stray conductivity between traces/elements, so if I give it a good clean and keep it dry it should work like new.However, I noticed upon pulling it apart that there's some corrosion taking place. Can anyone suggest a good way to repair these traces/SMD resistors? I have a soldering iron but heavily oxidized things don't take solder well in my experience. Or should I just put some lacquer on it and not worry about it?Thanks!

Topic by RelaxedSoup   |  last reply


Fixing a broken iPod Battery Connector

I was recently disassembling my iPod in an attempt to resurrect an old iPod hard drive. I got it work, but in switching the hard drives the second time, I think I broke a trace on the flexible orange thing connecting the battery to the PCB. Is there any simple way to fix this without buying anything?

Topic by Ora   |  last reply


Okay, problem with hp pavillion ze5700- letter "y" scrolls across the display whenever a folder opens.

The "y" character scrolls  continually. I  disconnected laptop keyboard ribbon and hooked ext. ps/2 keyboard, then  reloaded  XP OS , then sub-out  HD , then tried to load XP again. No avail. Suspect hardware, no trace breaks seen,

Question by mark adam dean   |  last reply


Help With Eagle PCB Layout

Hello All. I'm trying to etch a board created in Eagle.  2 Questions: When I export the image, the "plastic part" of the pin headers on my board are showing up in the exported image. Is this image really "doable" using a toner transfer method due to the thin clearances and trace widths? Exports of the schematic and board images are attached. Thanks! Cam

Topic by evilknot   |  last reply


How do I make/find stencils for drawing steampunk airships? Need templates for the different parts of the ship.

I am teaching a steampunk class and want to provide students with stencils for the different parts of airships, i.e., the nose, the tail, the guns or canons, the deck, a mast, etc.  so they can each make their own unique airship by tracing those parts they like.

Question by tia_louise   |  last reply


Prevent rust on a PCB? Answered

How do I prevent rust?  Or should I just not worry about the rust?  I am using single sided board etched with ferric chloride, if that matters. Also I need the copper to conduct "on the top", like if I put a multimeter on a trace it would still conduct.  So I can't use something like a clear coat spray paint. AI

Question by JaredsProjects   |  last reply


Source for reliable bright white led strips that can be powered with 5v (USB)

Hello,  wanting to build a portable light tracing box that can be ran off the power of a laptop USB port.   Are there any sources for strips of that voltage?   Mostly what I have found is 12v,   the sites that seem to have 3v strips seem unusually expensive or the details of the strips are vague so I don't know if they are trustworthy.

Topic by NKAc_street   |  last reply


Could someone please identify this board?

I was ransacking through my university's inventory, in a quest to find something to build a line follower robot. I did find something that gave me a positive gut feeling. However, I need to know for sure what exactly this board is and if it is suitable for a line follower robot that should trace a 1.5 inch black line on a white background.  Photo of the board attached. Thanks.

Question by Adarsh_tronix   |  last reply


I want to run android on ipod touch 2g.?

I want to run android on my jailbroken ipod touch 2g. I want only android I do not want open Iboot or bootlace. I just want the android operating system with no trace of apple IOS. If any one can help I would really appreciate it. Can some help me please?

Question by steve-lane   |  last reply


How can I feed a world map in a robot and make it understand what I would be asking it?

I want someone to help me out that how can I feed a world map and can I know that how  can I make my robot understand what I would be asking it  because I want it to trace all the places on the map which I would be asking it.

Question by famy zafar   |  last reply


Instructable on electroplated circuit boards?

I managed to plate a copper trace onto piece of acryllic today, to test out a process for easily and cheaply making (and possibly editing/repairing) custom PCBs. The adhesion appears to be good for surface preparation used so far, and a nice thick track has formed. So, would it be worth uploading an instructable once the process has been refined a little (or enough to make simple boards properly)? Any questions, feedback or comments would be appreciated.

Topic by The Skinnerz   |  last reply