Questions tagged [pc]

PC stands for a personal computer. It is a general-purpose computer whose size, capabilities and original sale price make it useful for individuals

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2answers
69 views

When I switch my oscillating floor fan on it turns the audio off on my PC?

When I switch off (not on, or up - there are 3 settings - only down and off) my oscillating floor fan my PC audio drops out. My PC audio is running through a USB midi controller (novation switch). To ...
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0answers
34 views

How is a cryptocurrency asic Miner built, is it possible to build one from scratch? [duplicate]

Is there a source where I can learn how all of this works from the ground up? and If I were to build/learn how much would it cost?
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1answer
63 views

What does “TYP” mean in a datasheet?

I am designing a PCB model of the ATmega32 using Altium Designer I have found the word "TYP" in the dimensions of the ATmega32 in the datasheet. What does this word refer to?
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2answers
79 views

What ist this component on early network cards with a slit in its package?

Early PC network cards (10BASE2, with a BNC connector) often had a two-pin component, typically yellow, with a slit in its package, close to the connector (image source): What is this component, and ...
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1answer
82 views

Need help identifying IC from Intel Mini PC PCB - top marking “1930 3614564”

I was looking into a blown up Intel Mini PC PCB (PIPO x8) and saw that a capacitor and a nearby IC were blown. I have no clue what the IC is or was for. Luckily I had a photo before it blew so I know ...
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1answer
61 views

Is that possible to modify and connect a dead smartphone camera to a PC using USB cable? [closed]

There are many videos on YouTube that explains how to use camera of a dead smartphone and connect it to phone by USB-OTG. However I want to know Is that possible to modify and connect a dead ...
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0answers
24 views

How to install Arduino Driver, if it is not discovered by pc(Win10)?

I bought an Arduino Uno on amazon, and when I connect it to my pc it is not discovered by the pc. Even if I use hdwwiz and install the driver, it says that the ...
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2answers
52 views

Is it okay to connect directly power supply to usb 5v? +<->+ & - <->- to maintain power?

I am working on an extention cable for my PC usb hub. It goes about 5m using UTP 5e cable, it sometimes can read the data from usb, sometimes it can't. I figured, it is because of voltage drop. So I ...
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2answers
62 views

How can I discharge static electricity from my body?

I am planning to install a PCI Express Wifi-adapter in my PC. In order to do this, I would need to open my PC. I'm worried that if there is static electricity in my hands it could fry the motherboard. ...
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33 views

Between PC and multiple microcontoller, data transmit and recieve over wifi

I am working on project, in which 4 microcontrollers are involved and each microcontoller is controlling a data aquisition system that reads 2D array(64×64) of sensors So i want to start the data ...
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1answer
88 views

Building my own on-off button for a PC

I'm looking to build my own power button for my computer. Most motherboards have a pair of PWR_SW pins that your case power button typically attaches to via two ...
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1answer
59 views

Without the use of any software, what would be the cheapest way to connect my broken laptop's keyboard to my desktop?

I am trying to use an old keyboard from a laptop as a new set of keybindable keys for my desktop. I will worry about software side later what I need here is this: How can I use the keyboard from my ...
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3answers
146 views

Does a personal computer have just one clock and where is it?

I want to check my understanding which I have gleaned from several sources, many of which seem to be out of date and many of which are conflicting. My understanding is that there is just ONE CLOCK ...
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1answer
64 views

Assemble back a momentary switch

I have this momentary switch that is used as a Reset switch on my computer : I opened it and I'd like to assemble it back. It's made with these parts: the push button the grey "frame" a ...
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0answers
116 views

Can undervolting damage my laptops fans?

so I started reading a lot about undervolting etc. and tried it myself. I use a lenovo yoga 920 and I dont do any hard workloads, but the fan noises annoyed me as lenovo is known for its loud fans. I ...
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2answers
60 views

Which device will allow me to simply capture 24v?

I'm new to electronics, struggling to work out whether this is simple and I'm missing something or whether it's a lot more complicated that what I anticipated. I have something (some device) that is ...
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1answer
336 views

Is there a way to use the i2c interfaces on a standard PC mainboard to control a device?

I have attached a few sensors and an LCD display, all of them having an I2C interface, to my raspberry pi, and written a software on the pi to read/write them. Right now, I have a network daemon ...
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337 views

How to calculate: watts for AVR, VA (volt-ampere) for UPS

I intend to buy an AVR or UPS, and I want to add a few external HDD's & a few Mini PC's. I need to calculate how much power is used by every device so I don't overload the AVR or UPS EXAMPLE: ...
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2answers
121 views

Grounding Yourself When Working On Electronics

I was wanting to discuss if using a wrist strap connected to a in unpainted screw on a pc power supply (this screw is a mounting screw it is not touching anything inside the power supply) that is not ...
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0answers
283 views

How to DIY BaoFeng radio-to-soundcard cable?

I've got a cheopo BaoFeng UV-5RE that i'd like to try as packet radio. I've snipped the plug off of the headset that came with the handheld, soldered it onto some breadboard cables, and did the same ...
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0answers
40 views

Confuse with how to use my pc power cord!

I have a type E or F 16A-260v power cable for my computer, and it's a quite important pc to me. I've recently moved to Canada and here I assume the plugs are type A and 120v. I looked for type A power ...
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1answer
60 views

Can hardware damage cause a computer (or a smartphone) to make miscalculations or logical errors?

I want to put an example. If I have a motherboard, some elements dropped (such as capacitance or resistance). When I install it into a computer, it can pass Power on Self Test and successfully launch ...
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1answer
60 views

Why do PCI Express riser/adapter cards have electrical components?

I'm looking to make a custom PCI Express right angle adapter because the ones on the market don't work with my space constraints. Now, because it's basically an extension cable, I'd imagine it should ...
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1answer
75 views

Inrush current with capacitors connected to USB in parallel

I did a project that connected to the PC USB. When the PC is being shut down the Vcc (5 volts) is halted. But I need the voltage source to stay for extra milliseconds after the voltage halt. For that ...
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1answer
638 views

Minimum requirements to interact with PCI Express

I have a relatively simple project (from the user point of view) in mind. I want to develop a very simple PCI Express (x1) card that users can put into their system and toggle some GPIO's from a GUI ...
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1answer
93 views

basic DIY function generator and scope

I'm currently traveling and only have access to basic parts (soldering iron, an arduino nano and a breadboard!) but I'm able to buy parts from local suppliers. for a project I need to be able to ...
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4answers
299 views

How to do this USB transfer? [closed]

I have a scenario that, When receiving data through UART (STM) ,same time the data is displayed in the notepad(opened in PC) through USB. How can I implement this? I am using stm32 micro ...
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1answer
137 views

Messages sent when keyboard key is pressed [closed]

When pressing keys on a keyboard what messages are sent to a PC? Is it OK to send this message using a micro controller (through USB cable)? This is the protocol format i got from website. how to ...
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0answers
64 views

What can i do with a WM8192EU USB module?

I recently came across a wm-8192eu usb module from an old electronic doorbell. It had a socket on the board that it just slid right out of. When i googled the chip it showed a bunch of usb wifi ...
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1answer
77 views

Design PC mainboard from scratch [closed]

As a hobbist I always wish to design own PC mainboard. I want to try build such PC based on I3-390m CPU (pga988) and bd82hm55 chipset. Any clue where I can find some datasheet or circuits that can ...
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1answer
111 views

Using WS2812b LEDs in series [closed]

I'd like to convert some of my PC case fans to be compatible with Corsair's RGB system to fit with other case fans. Corsair has an RGB fan hub that allows you to connect RGB fans to it, then connect ...
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1answer
62 views

PC 12v rail shows ripple under load when checked through a multimeter

Recently after having some issues in my gaming PC, i checked the 12v rail under load(benchmark). The 12v rail dropped to 11.6v that's within spec. But when i switched my DMM to AC it was giving me ...
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2answers
91 views

Choosing the right power cord for my PC adapter [closed]

I need to replace the euro power cord on my new PC with a UK one. The power adapter for the PC has the following rating: Input: AC100-240V - 50-60Hz, 3.5A Output: 19.5V (direct current) 11.8A The ...
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1answer
1k views

Inject 5V bias power (“fake” phantom power) for microphone (ModMic)

I've recently bought a ModMic4 for my PC, but the signal level is very low and have to amplify it quiet a lot digitally, which introduces ton of white noise and I have to use noise supression which ...
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2answers
61 views

How to choose the correct pc fan? [closed]

I need to replace a pc-fan 2 pin(80X80X25mm). The only details it has are:12V/0.14A.(no RPM/CFM details). Will those details(voltage/current)enough and i can pick any 80X80X25mm 2-pin pc fan which has ...
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2answers
197 views

How thick is a computer RAM module?

I was just using a DDR3 RAM module as a feeler gauge and it fit the gap perfectly. However, then I tried to find out how thick it actually is and I couldn't find any specs. I'm assuming it's ...
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2answers
90 views

Speakers make humming sound [closed]

I don't know if this is the correct forum to ask this, but I have a problem with my audio set up. The setup goes as follows: PC -> external audio card (via usb from pc) -> stereo equalizer mixer (via ...
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2answers
459 views

PC power supply charge 12v battery

Two part question. If I take the 11v and 5v, with diode to prevent 11v to flow to the 5v, will I get 16 volts? And will it charge a 12v battery? Last how can prevent overcharge? Also this is an ...
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3answers
439 views

Can you determine RGB pinouts with a multi meter?

I have a Swiftech Apogee XL2 that has an addressable LED inside it. I want to connect it to my other RGB setups but I need to know the pin signals and voltage of the LED. I have a multi-meter at the ...
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2answers
585 views

VGA cable arcing against computer case

I've tried to turn on my old PC with my old LCD monitor, which is powered by a kettle cable directly from mains, no power supply brick). When trying to get it to work, I have noticed the following ...
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2answers
5k views

PC Headset crosstalk

I had issues with crosstalk (microphone picking up headphones sounds) and thought it was caused by headset. So I removed headset's original cable, put 4 pole female 3.5mm jack on the headset and ...
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1answer
264 views

Powering 64 SATA HDD from Single ATX Power Supply

I am planning to wire a 4U DIY JBOD top loader. Looking at the power output of several power supplies they have a a maximum rated 5v rail of 100-125w. By looking at the spec sheet of my chosen HDD I'...
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1answer
964 views

Conformal Coating PC Parts?

I couldn't find any topics relating specifically to this sort of thing, and even tried asking folks over on Reddit at /r/buildapc, but I didn't get many responses or many people know if it would be ...
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1answer
490 views

How to connect a PNP inductive proximity sensor to a PC? [closed]

I have a PNP metal proximity sensor. I am using it to test a door lock mechanism. I need a way to connect this sensor to a PC and make a user interface to show me the signals and the values. I haven'...
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0answers
41 views

Powering PC from motor generator

Commonly there are basic motor generator sets (with or without automatic throttle to compensate for load variations) and then there are those with an inverter to produce a cleaner sine wave using ...
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2answers
258 views

Is it possible to measure and log temperature using a microphone port of PC?

Instead of using an expensive logger, I'd like to measure and log temperature using a PC microphone port. I'm going to use TMP36 Temperature Sensor. The output voltage of the sensor is measured by ...
0
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1answer
617 views

Wiring RGB Vandal Switch as PC Power Button

I'm trying to wire up a Schurter CPS16 capacitive, multicolour (RGB), anti-vandal switch to my PC for use as a power button. The switch function is momentary and normally-open. Tech Sheet I'm just ...
0
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2answers
69 views

Communicating with devices from PC [closed]

For a few years, I have been using microcontrollers to do simple hobby projects that require using various communication protocols (serial, i2c) and toggling GPIO pins. However, the computational ...
2
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1answer
147 views

Is it a good idea to connect PC to a non-isolated DC supply

I am working on an AC Voltmeter. The supply to the microcontroller is not isolated. Only a bridge rectifier is used convert AC to DC. To get 5V, resistors are used to drop down the voltage. Is it a ...
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2answers
1k views

External power supplies and DC to DC converters for Computers and notebooks [duplicate]

Part one : I have this Question , as we know , Most notebooks power adapters are 19.5V output. While the CPU and GPU works on 12V and the SSD works on 5V . , so the motherboard should have two DC ...