Over-Charging Capacitor

What happens if you connect some form of dc power source that supplies 100 volts to a capacitor that is rated for 100 volts, and leave it plugged in for a long period of time. would it eventually "over charge" and explode? would it over heat? would it loose its  ability to store energy?

Topic by merlinj   |  last reply

Xbox 360 Overated?

I myself, havn't had an Xbox or an 360. But after hearing endless months and months, of good reveiws, school talk, game exclusives, I'm starting to wonder? Is the Xb0x 360 that gooooood? Or is it overated?

Topic by Baron A   |  last reply

Video over Cat5

Hello, I need to get a video feed to the bedroom. There are 2 cat5's in the room coming from the tv points in the house. Tried a direct connection from the cable to the tv via cat5 but it's a ghosting image cos it;s 75ohm cable over 100 ohm Cat5e. Any instructions out there how to make a video Balun or convert the cable DIY style. Balun's are expensive. Thanks, DALY..

Topic by barry.daly25 

Audio over rj11

I was wondering if I can have a audio input on a rj11 so I can run audio off my house's phone lines. We have VOIP now and don't use the phone lines, so can I still do that?

Question by akidnamedluke   |  last reply

Info over a network

OK me and my friend had an idea, we both share the same wireless signal and need more storage..also I don't want to configure anything or spend any money...i have extra computers and was wondering, if i put one of my additional computers on the wireless network is there to use it as kinda a NAS of sorts..its running XP and i don't want it secured...its just pictures and music mostly???

Topic by hvac2010   |  last reply

left over harddrives

At this moment I have FIOS as my hd provider. As you already know the harddrive on the hd dvr in my motorola unit is very small. I am also in possession of two regular and one hd dvr from directv and one rca dvr-10. Is there any way to download info from my FIOS Motorola QIP6416-2 into either one of the dvr/pvr I have in my possession. Especially the Directv dvr. Since I canceled DSS service they all say searching for signal. Thanks for your help.

Topic by avguy 

Where can I buy a premade vox / PA-style voice-override circuit?

I have a pair of hearing protection headphones.  I want to play radio & walkie-talkie through them.  However, when the walkie talkie plays, I want the radio to cut out. This is a basic PA-style circuit.  Some sound mixers have this too.  I can find circuit schematics online, but no time to build a circuit. Is there a pre-made device I can buy to do this?  Ideally it'd be a small box with 3 audio jacks - 2 inputs & 1 output.  One of the audio inputs would override the other. This would also be great for things like music + GPS in the car.  Is there something premade that I can buy?  I'd rather not have to build & debug a DIY circuit, as I really don't have the time right now.

Question by jumpfroggy 

12V over ethernet ( CAT5)

Hello, I need to transport 12V of molex output from a computer power supply over 10 meters to feed a touchscreen. My house has CAT5 cabling. Can i use that? Does someone have a step to step procdedure to make this cable ? Any ideas ? Thanx! Henri, Hilversum / The Netherlands

Question by zutt   |  last reply

how not to over charge a battery?

I want to connect my waterwheel to a car battery, but I dont want it to get overcharged and blow up! what can I do?

Question by tim13211   |  last reply

"Recent" over ALL topics

Please PLEASE bring back an option to see the recent ibles over ALL topics.At the moment i have to go like- Choose topic (Like Circuits)- Click "Featured projects"- Click "Recent"And this for all 7 topics...I would really like the old instructables.com/recent back. Showing the recent ibles of the whole site.

Topic by Orngrimm   |  last reply

Streaming TV over the internet? Answered

Is there a way i could stream my cable television across the internet to my business so we could watch tv there, kind of like a slingbox but for way cheaper and more DIYish

Question by Algag   |  last reply

SSTC MOSFET over heating?

The following images shows my SSTC work, it is based on steve wards mini SSTC. But the problem is that the MOSFETs seem to heat up in like 3-4 sec of running. Input voltage is 220v AC(rectified and filtered later using a SMPS line filter).

Question by jasshopper   |  last reply

Over voltage on Speed controller? Answered

Hi, Today I found out that my electric scooter has a 36 volt motor and it has a 24 volt speed controller. I'm sure it is 24 volts can I over-volt it to 36 volt with out causing harm it has been OK for a while now but I'm thinking of the poor capacitors there only rated at 25v and that why I dont think it will matter as normally there rated a lot higher than that for a safety margin also sealed lead acid battery's have a nominal voltage of 24v and there charged voltage anything up to 30 volts, I,m just hoping that the MOS-FET's that drive the PWM (pulse width modulation circuit) are rated over 36 volts

Question by Daniel Deacon   |  last reply

sending sound over light?

I have seen those thngs where you can send sound with a laser pen  i have an old sterio with a ir sensor and a laser pen i was wondering how i would go about making this thing  im not the best with eletrinics so need a dumbed down vertion lol      would the laser pen work with the or recever or would i need an ir bulb to

Question by nonamesleft   |  last reply

LED solder overheat?

I hand soldered some surface mount LEDs and most of them seem broken now. I assume I overheated them. However, I`ve soldered lots of other kinds of surface mount LEDs with no problems, even really small ones were fine. The problem was with some warm white (yellowy white) LEDs. I removed some of them to check for a soldering error and they still won`t light up when I test them so I guess they are really broken. This is a bummer because I paid over 100 yen a piece for them. Do you think I overheated these LEDs when I soldered them?  How can I avoid this problem in the future? Why did this only happen with this particular kind of surface mount LED? 

Question by snotty   |  last reply

Overvolted multimeter?

Hi.  Simple question. (or maybe not) I have a digital multimeter I bought a while ago that I think I accidentally put too much voltage through. The voltmeter function on it is now broken. Whenever it's turned on, it reads "156 VDC" even though no voltage is being applied. (however, when I do apply voltage, the meter does detect it.) All other functions seem to be working correctly, but I'm bummed because the voltmeter is what I use the most. Is there any way to "reset" a multimeter? if not, is there anything I could try to fix it? Thanks in advance.

Question by tylervitale   |  last reply

Remote control cars over the internet?

I came across this site with 2 RC cars that can be controlled freely over the internet. rajesh.homelinux.org/  I want to make one of these setups, but I don’t know exactly how to do it. I need help with getting clicks from a webpage to a full time pc to some relays or something like that. Also I need some way to embed a live webcam stream into the webpage. I can handle everything else.

Question by physics_dude   |  last reply

Transmitting video over Wi-Fi

Hey Instructables community! I'm trying to build a system that will transmit video feed from a camera attached to an RC car to a computer over wifi for a project me and my daughter are working on. I've looked through several solutions, such as wireless KVM, but wanted to know what you guys thought would work best. I'm looking to have to put as little electronics as possible on the RC car, to minimize weight. Thanks!

Topic by DarrenG   |  last reply

Arduino over Ethernet: Microcontroller Noob

So I have an Arduino R3 with PoE and I'm trying to find a way to make it perform basic tasks by calling the tasks from a webpage. The problem is, I don't know anything about microcontrollers apart from Op-Amps and FF. Also, I can't web code. But I'm a fast learner and I hope someone can show me where to begin. Thank you.

Topic by flipflap 

The notifications constipation may be over !!! maybe? Answered

After all this time of not getting notifications I just got a flood of all the past ones, its pretty funny like a major cork finally letting go.  So check to see if your emails have received something along the line of "you have 120 new comments" A big thank you to those who have been puzzling through this latest glitch. Here's hoping that this one is resolved for good.

Question by Vyger   |  last reply

Analog and Digital inputs over serial?

Good day, question i am building a controller for my robot and i need to send the inputs(analog/digital) by xbee to my robot. now i am not good with programming i get stuck with the first line.... i want to know how i can program it to send it values over serial from xbee tot xbee on robot i didn't get anything work so far, maybe you guys cant help me with a start? Inputs -> arduino -> serial -> Xbee -> Xbee(receiver) -> arduino -> outputs(servo, lights, motors, steppenmotors) the inputs on the controller are 8 switches(digital) and 6 analoge joysticks! Prototype robot is pictured on the picture it had for now a arduino relay shield to control the motors but it will be change to a motor controller(I don't have one yet) any type is possible!

Question by mvan h1   |  last reply

LEDs - Under-volt, over-amped?

My issue: Have multiple LED drivers, (high power LED instructable) and connected the wrong one. The LEDs are not dead. My LEDs are rated at 9-12v, 950mA and I have sets of 4 in series hooked up to a 36v power supply. The driver I used has a .3ohm resistor on it. so it's putting out ~1.3A The LEDs should have burned up. Since the driver eats up a little of the voltage, each LED is getting ~8.75v. Is this why they haven't burned up? Thanks!!

Topic by thestip   |  last reply

PCB etching left over paper

Hey everyone! I'm in the process of etching my first PCB. I have a few questions. I'm using the toner transfer method, with hydrochloric acid and a little hydrogen peroxide as an etchant. Anyway, I transferred the toner to the board, but I believe the glossy paper I used may have been a little too thick. The toner transferred correctly, but i can manage to get all of the paper off. I've tried a tooth brush and a soft towel. My question is, if I just go forth and etch the board will the paper dissolve with the copper on the board and give me a clean result anyway? Will the copper covered by the paper not be removed? are there any cons to this? (such as not being able to reuse my etchant) Thank you all, your help is appreciated Ken

Topic by KennyW2   |  last reply

usb over fiber optic cable

My house was once part of a business that was connected to neighboring structures via fiber optics for Internet.  I want to put in a security system with some usb cameras and of course we know what those limits are.  I have successfully made 25' usb/cat5 cables using this site... they work great but I need 50 - 60'.  I was wondering if it was possible to utilize these fiber cables for the data side of the usb and somehow power it by other sources?  I know a little about fiber like putting in connectors and such and I do have 2 transceivers.  I can make rj45/usb connectors for the tranceiver ends but I'm just not sure of the details or even if I'm barking up the right tree.  I'm not sure where the power fits in either. Any of you geniuses know how I could do this? Thanks

Topic by cornflake000   |  last reply

LEDs keep on taking over. Excellent.

It's no secret that we love using LEDs for our projects. They sip power and are fantastically tiny. You can even get an introduction to how they work with just an LED and a coin battery. If you haven't used one yet, make it a new year's resolution to make one light up this year. If you want to complete any resolutions, that'll be one of the easiest.Yesterday's announcement of the Macbook Air in San Francisco pushes the LEDs further. This isn't the first laptop to have it, but it's a dramatic display of how far the tech has come and how far it needs to go. LEDs aren't perfect for every use, but they hopefully will be someday.According to this article some of the current goals are for better whites, deep-UV, and quantum cryptography. All of which sound pretty tasty.But what about you? What do you want from LEDs that you don't see just yet?

Topic by fungus amungus   |  last reply

How to over- power an led with arduino ? Answered

Is there a way to draw max (or even more than max) current to a LED with arduino as the controller ?  The LED is a high power LED that use a 12V source. I used a power MOSFET IRF620 as the driver. My application is that I flash the LED on and off in a very short amount of time (strobe light). (the on time for the LED estimate is about 20-50ms). So without modify anything, the light give out is quite dim. I want the LED to draw out much more current in that short amount of time to enhance the brightness.  IS it possible to do that ? Yes, I am aware that doing so might shorten the lifespan of the LED and I will add a transistor in between the arduino and the power MOSFET just for an extra layer of protection.  EDIT: This is the spec sheet that they sent me. Most of them i think are pretty bs.  https://drive.google.com/file/d/0BwYTLuvu7CiTS0RaTEZnRU9hQ3M/view?usp=sharing

Question by Jack Vu   |  last reply

In over my head - pH automation

Hi all,I'm in need of help. Due to my previous jobs and general knowledge a friend has asked me if I could build an automatic pH regulation system that will monitor and maintain two tanks (it sounded easy to me at the time) but I've suddenly found myself out of my depth.Having spent long evenings searching on the web and on here, I've seen a few builds of monitors and a couple of dosing systems but none are just what is wanted as they are only set up for single tanks, or not combined into an auto-doser, or too "over-tech'd" or multi-purpose orientated and I don't have the knowledge to adapt or alter things to my requirements. Plunging straight in at the deep end with no real idea of what I'm doing and can actually be done, I'm thinking I should be able to (theoretically) assemble and program an Arduino controlled system, with the one box doing the job of monitoring and regulating both tanks independently, so two sensors, pumps etc., from what I gather it's by adding different boards to the base unit (I did say I know nothing). I don't need wifi or anything like that, just a simple device with a basic display showing the current values that will sit there and just do the job.I think I have the capability to actually build and program the thing having a background in electrics and a little knowledge of relay control systems - not electronics, I start getting lost just after the transistor/diode level and BASIC is more my programming level (yes, I may be THAT old, but I'm still trying to learn), and so what would really help me is if anyone out there can point me towards a site or pages where I can find the info I need, hopefully that doesn't assume years of prior experience, to either build or adapt something to what I want, or even aim me towards someone who could be able to supply me a design and components list, either for fee or free. Cheers!

Topic by hobbit590   |  last reply

LED Wiring, Over Amp Burnout? Answered

Hi everyone, hope someone can help? I just started playing around with some LED lights, trying to make a really bright Flounder light that can last at least 6-8 hours on the supplied battery. I was told if I used a "step-down", I wouldn't need resistors, (since the step-down does this in an essence), which I haven't, But the step-down keeps burning up? Here's the set-up I've been playing with... - 18vdc (power drill) battery. (unknown amps). - Step-down driver.... input 8vdc - 36vdc, output 1.5vdc - 36vdc - 3w LED Cree :                            ~ Reverse Voltage: 5.0 V                           ~ DC Forward Voltage: Typical: 3.8V Max: 4.2 VD                           ~ DC Forward Current: 700mA                           ~ Luminous Intensity: 170-190lm                                                           I use a volt meter to tune the Driver to a constant 4vdc to drive the LED. And the driver burns up and then the bulb after about 5 minutes. I was told I needed to add Ceramic Resistors, between the driver and battery, and between the driver and LED. (But what size?) I was also told I don't need extra resistors because of the driver? Which is Right? Or should I just add resistors between the battery and LED and do away with the Driver completely? Also, what is meant by "Reverse Voltage"? I have a 6vdc battery with a 4.5 amp capacity. But I want to use the 18vdc battery longer use, time wise. This is why I have the Driver, when 1 battery deletes, hook up the other one. I'd like to put 3 - 3w (180L) LED bulbs together, and run them off the 6vdc and/or the 18vdc battery so the LED's will last for at least 6-8 hours on 1 charge. I want to use either the 6vdc and/or the 18vdc battery because they are lightweight. I could go with 1w LED's so long as I can get the brightness needed to light up a distance of about 12' underwater to see a Flounder, and get 6-8 hours usage. Any help would be appreciated.

Question by Atomizer   |  last reply

any idea of a levitating box over magnet instead of magnet floating over box?

The levitator machines cant fly themself yet but what if they do? it would be possible to make a kind of a car if you use a field with alot of strong magnets right? I mean this: +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ another 4 electromagnets could be used as a sensor that detects thepolarity of each levitating box (if used 4 boxes) and a microcontroller just switches the magnets on + or - to move the object or car forward...

Question by blackdogg   |  last reply

multiple prepaid master cards

Is it possible to use multiple prepaid master cards to make purchases over 1000 i have no bank account and i dont i can get one right now

Topic by ultra1000   |  last reply

anyone working on an magnetic over unity generator?

I was wondering if anyone could help me out with instructions or at least point me in the right direction for a magnetic over unity generator

Question by Loki1978   |  last reply

Max length for running leds over cat5e? Answered

If i run 2 leds over cat5e cable how far away from the Arduino can I get? Thanks, Kade

Question by FarmerKJS   |  last reply

control 4 outputs over the internet with arduino? Answered

I would like to control 4 LED lights in my house over the internet with arduino uno, ethernet shield and my android phone. All they need to be is on/off outputs. I really could use allot of help. I am new to using the arduino over the internet.

Question by slowguy   |  last reply

repairing broken sennheiser over ear headphones Answered

My sennheiser over ear headphones have seemt o stop working, the right side still produces sound but the left side does not. any help would be great. Thanks!

Question by jackandjill   |  last reply

Cat5e ethernet and phone over network wiring

My house is wired with cat5e.  I am trying to run phone and ethernet over the existing wiring.  I have a Time Warner cable/modem/router.  I've successfully wired all of the cable into a 10-switch router.  The ethernet is working, but not the phone signal.  Do I need to connect the phone wiring together separately from the 10-switch router I installed?

Question by pfron   |  last reply

Why is my power supply over-herating?

I have a very simple power supply build to power effect pedals  220VAC --> regular 12vDC wall wart rated at 1A --> 9vDC (7809) regulator with 220uF on the in and 1uF on the out -->1  load rated at 250 mA  It's perfect except one thing... it over heats quickly, which will eventually lead to damage in a way or another.  Please advise  Thanks 

Question by mi5a   |  last reply

Transmit Video over a Local Area Network? Answered

I need  to send video from a webcam from a computer running Windows XP through my router and to another computer connected to the network. NOTE: There is no internet connected to the router! Thanks, joespicnictables... =D

Question by joespicnictables   |  last reply

What happens if you over-power a laser? Answered

If you take a laser (say, a 1mW pen laser pointer) and hook up a stronger battery to it (say a 9V battery as opposed to the 3V watch battery it came with), would it increase the output of the laser? If it would, at the risk of lifespan, would it work if you strobed it?

Question by KahlZun   |  last reply

Is it reasonable to convert energy to power over time?

I have recently been talking with another person on instructables about converting 33 megajoules into a standard comparable electric unit, watts.  Now the formula for joules just so happens to be watts times seconds, but he still thinks this is wrong.  He says I can't just assume time.  Now I can assume any amount of power for any amount of time I wan't to as long as it adds up to 33,000,000 joules in the end right.  So if I wan't to consume one watt every second, then I have to set the amount of time as 33,000,000 seconds or roughly 9,166.7 hours.  This all seems fine to me right, because one watt for 33,000,000 seconds is equivalent to 33 megajoules. Now I originally didn't understand all of this so I just fumbled around and ended up converting to hp and got roughly 12, which is very close for being a rounded off number.  It comes out over one hour to equal just over 32 megajoules.   I can't seem to understand what the problem is, the DEFINITION OF ENERGY/WORK IS POWER *(OR OVER THE PERIOD OF) TIME Is there really such flawed logic here that "joules could be converted to cubic meters?"

Question by jj.inc   |  last reply

Port forwarding over ad-hoc possible??

My linksys wireless router wrt54g v3. Stopped working and after 6 hours with tech support ive decided to throw it away. ive set up an ad-hoc network but i keep losing connection and ports arent making all the way to the last comp. if anyone knows how to portforward without a router let me know please!

Topic by Noblevagrant   |  last reply

Recommendations on propellers/controller for over 100g body.

Hello everyone,I am currently trying to build a DIY drone. I have never involved myself in any sort of creating drones. My current project is about making a drone with a morphing body we created. Previously, we just purchased a pre-made drone and took apart all the necessary components and re-attached all onto the morphing body. But the drone we used is this model : Holy Stone HS170 Predator Mini RC Helicopter Drone 2.4Ghz 6-Axis Gyro 4 Channels Quadcopter Good Choice for Drone TrainingThis product can make things fly when the weight is over 30~50g. Would you be able to recommend some products or any sources that can be useful for building a DIY drone? Thank you!

Topic by melonmelon11   |  last reply

How to send numbers over IR with Arduino

Hey! When I buy a cheap remote from the store, and I run a IR receiving sketch, every time I push a button I get a series of numbers e.g. 1259575. Now I now how to receive IR. But how do I transmit a number through IR? Every where I go it is outdated and doesn't work. All of Ken Sheriff's stuff is sending special Sony, Panasonic and othercompany's codes. I just want to send a number. I just want to hook up an IR LED to Arduino and have it flash a number! Simple, right? Thanks!

Topic by HavocRC   |  last reply

Remote control cars over the internet (UPDATE)

Thanks to everyone on the original topic of RC cars over the internet. I came across this site with 2 RC cars that can be controlled freely over the internet. rajesh.homelinux.org/  I will be using an arduino connected to a computer (Host) via USB. The host computer will be running a clean copy of ubuntu 9.10. But I need help on the following.. - What to program onto the arduino - How to get the host talking to the arduino - How to receive commands from a client (you) and then to the arduino - What needs to be done to a basic webpage for you the client. - How to host a webpage some of this stuff I already know but advice will be helpful. the live webcam feed can be run on any provider that runs at fast frame rates. Red5 might be an option since the site on top uses it. Here is what Letapjar, one of the site mods on the RC-Carduino sites had to say. "Hi folks, I'm one of the site mods at the RC-Carduino site .  A couple of quick things: 1) we use an arduino b/c it was the quickest/easiest way to get the webserver talking to the micro-controller (and it's only $30 for a dedicated arduino for this project - this is  a long term project for us so $30 is a small investment) 2)remote server is no problem - just forward the HTTP requests to the local machine that's connected to the arduino. 3)here's a link to the code to talk to the arduino from another program: http://todbot.com/blog/2006/12/06/arduino-serial-c-code-to-talk-to-arduino/ in ubuntu make sure the apache user is part of the 'dialout' group to talk to the serial port. - another option is to use a serial proxy as described on the arduino.cc website. (we haven't tried that yet).  Design a simple protocol (ours uses single ascii characters for each movement direction - easy and we can use a switch/case statement to interpret them quickly on the arduino)" Happy Hacking sorry but I still don’t understand what to do.. And, I really am a newbie on the arduino stuff.

Topic by physics_dude   |  last reply

Remote control cars over the internet (telepresence)

I came across this site with 2 RC cars that can be controlled freely over the internet. rajesh.homelinux.org/  I want to make one of these setups, but I don’t know exactly how to do the codeing. I got everything external under control. I am going to use the 25 pin printer parallel port. The only problem I have is trying to get a client pc on a webpage to communicate with my computer then to its serial port. So I need some help with the following... 1. A webpage with buttons to control a program on the host. 2. A program on the host to control a parallel port. I want a webpage to have 12 buttons, two sets of 6. One to control car 1 and the other for car 2. Each set will have the following keys. forward, back, forward left, forward right, back left, back right. (Or possibly a set of 6 buttons with a drop down menu to select the car to control.) I can use ubuntu or Windows, doesn’t matter. So if someone could guide me through the webpage makeing, communication to the host, and the host to the parallel port, I would greatly appreciate it. Here is a link that you might find useful. http://www.epanorama.net/circuits/parallel_output.html Update: I think the site at the top states that it uses Ubuntu and Apache. Apache/2.2.9 (Ubuntu) PHP/5.2.6-2ubuntu4.2 with Suhosin-Patch Server at rajesh.homelinux.org Port 80

Topic by physics_dude   |  last reply

Can someone look over my Schematic?

Hello All! I have recently started using Eagle, so please forgive the messy schematic as well as the lack of labeling-I am still trying to learn the ins and outs of the software. So I recently received my raspberry pi zeros after months and months of waiting and have been incredibly satisfied with the size and compatibility. However, the biggest issue is the lack of USB ports, which of course were eliminated on purpose to decrease the weight, size, power consumption, ect. I thought it might be useful to design and fabricate a usb hub shield that follows the form factor of the pi zero. I was searching for information and came across this IC that can serve as a 3-port hub, the TUSB2036. However, it only operates at the USB 1.0 spec. Upon further research, I found that the newer model of this IC is the TUSB2046. I made an attempt to design a schematic off known references as well as the data sheets to form a small hub for the pi zero. Can someone with electrical engineering or circuit design experience please let me know if this would work? I used this schematic as a reference and [attempted] to modify it to accommodate the four port USB 2.0 TUSB2046. One important note, the pin labeling on the schematic follows that of the TUSB2036, as I could not find a way to modify it...Please reference the pinouts in the data sheet for the correct labeling on the TUSB2046. Thank you for all the help! 

Question by JoeW79   |  last reply

Arduino relay power over Ethernet cable?

Hi. I have an Arduino setup with 2 individual relay boards controlling two 240v power outlets. The relays are housed separately from the Arduino and I have connected the two via a standard ethernet cable. The relays I have are both 12v powered and switched via a 5v Arduino digital pin. I have currently wired the following. Orange and orange/white ---> 12v+ (from a 12v plug transformer) Blue and blue/white ---> GROUND (connected to both plug transformer and Arduino GROUND) Brown ---> Switched +5v from Arduino to relay 1. Brown/white ---> Switched +5v from Arduino to relay 2. SITUATION. One of these relays for some reason isn't working properly. The board is receiving the right power but the relay itself is not clicking/switching. Maybe sticky contacts. The whole thing is already wired and the unused cables of the network cable trimmed so I cannot use them.  MY QUESTION I have a spare single 5v powered relay board which I could replace the faulty 12v with, but with no wires left to connect it, could I pinch one from the orange pair that I am sending 12v through to the first relay and use that for the 5v to the replacement one? In a less round about summary... can I send 12v+ through a single strand of ethernet cable with a run of only about 30cm? Thanks, Steve.

Question by steviecuk   |  last reply

How does this Automatic Pour Over Brewer Work?

I'm looking to build my own automatic pour-over coffee brewer. Does anyone know how the water spout is moving in that spiral rotation?   https://www.kickstarter.com/projects/invergocoffee/invergo-the-first-automated-pour-over-coffee-syste

Topic by Brennn10   |  last reply

What is the advantage of a fluid coupling over other clutches?

You can start the vehicle in any gear; that's ok........but anything apart that.........i guess it isn't fuel efficient

Question by srujithcool   |  last reply

Facebook logo appearing all over wall posts?!?

This is really weird, on Facebook, the Facebook logo is appearing in wall posts everywhere it says "some" or other random words.. Is this happening to anyone else??

Question by josh1324