Computer hardware is the collection of physical elements that constitute a computer system

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2answers
75 views

Electronics board debugging [on hold]

I have an electrical board with 2 input voltages; one of them is 5V and another is 12V. I set 12V adapter to 5V absolutely in a wrong way. So I've found myself in a big problem. Hope you guys help ...
0
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0answers
49 views

Crash computer with light/laser, heat, waves [closed]

I read about the Raspberrypi being crashed with an xenon flash. https://www.raspberrypi.org/blog/xenon-death-flash-a-free-physics-lesson/ However, from my understanding the above attack isn't ...
3
votes
3answers
234 views

Polling vs Interrupt: which one is first in a bare-bone piece of hardware?

First of all, I must say that I have a computer science background, and I don't have much knowledge about hardware. I would like to ask this question because in software, what I often see is a loop, ...
1
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1answer
37 views

Is depth and number of stages the same measure for a CPU pipeline?

Is it true that the depth of a CPU pipeline and the number of stages of a computer pipeline are different measures? There is not much info about it if I google or look in my books. I think that depth ...
0
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0answers
68 views

Identify components on a SIEMENS PLC 1214c board

This is a 1214c PLC it has 3 boards : power-board ( 220 ac to 24 dc ) and a IO board A/D and a main-board . this PLC has failed after a power-cut also it didn't have a ground connection. In an ...
0
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5answers
143 views

What type of screw driver do I need for this type of small socket 5 sided star screw? [closed]

I'm trying to open up an electronic device with the following 5 sided star screw nut. I need a precision 5 sided socket screw driver and I cant seem to find the correct one. How would one find the ...
3
votes
1answer
72 views

Dividing a clock in Verilog - is it OK?

Dividing a clock down in Verilog is a basic exercise, and there are loads of answers online about how to do it. What I want to know is whether it is OK to use a clock that has been divided down using ...
1
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2answers
63 views

Copying/imitating wireless garage opener radio signal

I aim to be able to copy my garage door opener onto another device, but for that to be doable I first have to be able to recreate the radio signal that is sent from the garage opener. Is there any ...
-3
votes
1answer
45 views

Is this ADC's data output correct ? (LTC1273BCN) [closed]

Why is the period when the waveform should be 1 going between a 5V and VREF(2.4)? I have set the ADC as specified in the 'typical application' datasheet(see below). The two traces represent data ...
0
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0answers
71 views

External Voltage Supply Control with RPi

I need to control the voltage from a 30V DC power supply with RPi. I've got a RPi 2B and a piezo with max input voltage of 30V. My aim is to be able to control the voltage and supply the piezo with ...
17
votes
5answers
3k views

What does “Piggy” mean in this Schematic?

What does the word "Piggy" mean in this schematic diagram? I found some sections of a schematic where a part is denoted as "Piggy". What does it mean?
1
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2answers
55 views

What is the term for a photo sensor that takes low-resolution, black-and white, closeup images?

For work I used to have to read and log 7-segment LCD numbers off this tiny (3cm x 1cm) screen tens of times per day. Now I have a webcam setup that reads it for me and does some OCR to automatically ...
1
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3answers
117 views

High accuracy wireless triangulation in a small space?

the question pretty much states the basic idea, but here is my use-case; tabletop war-gaming. Optimally I would like to be able to tag each of my “play pieces” with some sort of tag, place a few ...
0
votes
1answer
46 views

Attempting to connect a simple memory chip to a computer

not too long ago a friend jokingly bought me this simple toy which basically consists of a "push-me button" that creates a laughter sound when pushed. How the hardware looks I pulled the speaker out ...
0
votes
1answer
47 views

Comparator power dissipation

I want to calculate the LM339 comparator power efficiency, so I thought the best way is to calculate the output RMS power and the Power dissipation and the quiescent(DC) power then will get the input ...
2
votes
1answer
133 views

Microsemi IGLOO2 FPGA design resources [closed]

I want to start working on IGLOO2 FPGA, and I'm new to FPGAs. I searched throughout the internet for tutorials and training courses for Microsemi devices. It has a bad support and resources compared ...
1
vote
0answers
90 views

How to implement autocorrelation (matched filter) in hardware?

I have an understanding of how to implement autocorrelation via the means of software, but after an extensive search on the internet I could not find how to implement it with hardware/electronics. In ...
1
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2answers
74 views

Weird behavior when simulating decoder using modelsim

In my introductory Digital System design course. We were asked to simulate a 4 to 16 decoder using VHDL and modelSim.Everything compiled correctly. However, when I try to test bench my program, I get ...
-1
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2answers
120 views

Is Embedded software a good way to do embedded hardware? [closed]

What are the advantages and disadvantages of using an embedded software to do embedded hardware?
0
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1answer
42 views

Need wireless communication technology options when long range is necessary [closed]

I need to find a way for my cell phone app to "ping" a device (that doesn't have a service plan, etc.) and make it vibrate when pinged. Range needs to be at least 1km reliably. Also the device needs ...
1
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0answers
24 views

Digit Recurrence vs Newton Raphson in hardware

in a lot of books and papers i've seen a lot of comparison between the algorithm mentioned in the title of this question. As far as i understood the digit recurrence is slow but usually requires less ...
0
votes
2answers
123 views

How many addresses are required for this system?

If a system has RAM containing 16K bytes with each of them needing their own distinct address and on top of that it has 16 peripherals and they each require 2^4 distinct addresses, then how many total ...
0
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2answers
38 views

Ways to communicate GPS coordinates to a central server wirelessly from a wearable device

I am currently looking at designing a wearable device for a client, which can communicate GPS coordinates back to some sort of central server (to then be sent out to other communicating devices such ...
-3
votes
1answer
100 views

How some bits are turned on while others remain off

How does the computer turns physically different bits on and off? I mean that the electricity flows to the transistors in order to turn them on or off but there are many transistors so what part in ...
0
votes
1answer
51 views

LCD screen is blinking when connected to batteries [closed]

I built a ~5V battery using: series of 3 x 3.7V batteries put in parallel 3 x 1.2V ...
1
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1answer
49 views

XMC module in electronics industry

What does XMC module stand for in hardware engineering? I have seen industry mention this but does it have a fullform?
0
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1answer
223 views

Proper Method of Powering Nokia 5110

I am considering getting some Nokia 5110's for use with my Arduino Nano board but I am in a pickle because I can't tell the correct way to wire it. Some people say to power it with 3.3V and only ...
1
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1answer
80 views

Unable to understand Verilog syntax

I found an example Verilog code as following: module test #(parameter p=1) (); localparam [1:0] lp = ~(p)'(1'b0); endmodule I'm unable to undestand the ...
2
votes
2answers
91 views

Are neuromorphic computers considered digital computers?

This might be a pretty simple question, but I am wondering if neuromorphic computers using non Von Neumann architectures such as the IBM TrueNorth chip are still considered digital computers. I have ...
0
votes
2answers
965 views

Single wire two-way serial communication - hardware configuration

I have several servos that can give feedback data that I want to read. The servos use special protocol so I need to use Rx/Tx pin on my Arduino Mega to communicate with them. The problem is that a ...
1
vote
4answers
214 views

8-bit per cell memory?

I'm a software development student, who want to improve its hardware knowledge. I'm reading Structured Computer Organization by Tanenbaum. In the chapter 2, the author says the following: "[...] ...
-4
votes
1answer
100 views

How to start with replacing a hardware with FPGA/microcontroller? [closed]

I'm currently stuck with how to start with a project I took on. The project is that I emulate the results given by a program when connected to a hardware using the same program and a ...
0
votes
1answer
48 views

Camera on cellphones

Why resolutions when we recording video or taking a picture with our cellphone camera are different? Video recording resolution is always so smaller compared to our photo resolution. Is it hardware ...
0
votes
2answers
49 views

Best Hardware for Accurate Point Tracking System

Here is what I am trying to accomplish: In the middle of a room, I have a mechanism with a laser diode mounted on it that can be moved in all axis by a motorized pan/tilt head type device. This ...
1
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1answer
554 views

A simple FIFO buffer in verilog

I have decided to implement a FIFO buffer in verilog (for fun). Here is my primary prototype you can say : It will consist of a register bank or memory. Each register will be of size N and there ...
1
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1answer
112 views

Where can I find correct documentation of old floppy drive formats?

I have an old drum machine with an ancient proprietary 3.5" SONY floppy disk drive with no information on the device itself that I have seen. The performance is spotty and it's very picky about disks. ...
1
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3answers
200 views

Computer peripherals to immediately (<5ms) detect digital input state change in C# programs

The C# application I'm working on needs to be able to be able to call a function within 5 milliseconds of a digital input signal's state change (0V = off, 5V = on). Rather than using software to ...
1
vote
1answer
62 views

Sound Box - Custom Message

I am trying to put a custom message on a "sound box" in a stuffed animal. I asked this at the Reverse Engineering SE and they pointed me here. Here is a picture of the circuit board: The blue wires ...
-1
votes
1answer
78 views

What knowledge and equipment do I need to build this device?

OK I am a Software Engineer dealing with both low level and C/C++/Java code with a Masters in Software Engineering but no knowledge of Electronic Engineering whatsoever. I wish to build a device that ...
0
votes
2answers
60 views

Is hardware handshaking not available when using a USB to RS232 adapter?

As far as I understood there is two type of hand shaking. Hardware and software. For hardware handshaking other pins of RS232 connectors used. Does that mean of we us a USB converter we cannot ...
17
votes
3answers
2k views

What are the 'knuckles' on through-hole LEDs and photodiodes for?

I am using an IR LED and a photo diode, and I have designed the PCB according to the specifications that I found on the datasheet - i.e. hole sizes for the pins being 0.6 mm. However, on these ...
1
vote
2answers
207 views

Finding number of don't care conditions

I'm new to these forums and have very little background in electrical engineering. I'm trying to figure out the number of "don't care conditions" based on an input of two numbers, each 0-9, for ...
0
votes
1answer
70 views

Aircom air connectors, what are they called?

Does anyone know what type of connector this is?
1
vote
2answers
3k views

How to test if my program for SPI communication is working correctly?

I have developed a simple code for learning about SPI in Arduino Due. The code is compiling properly and now I would like to learn the next step on how to test the code with the board and get the ...
0
votes
1answer
645 views

Identifying a component on the circuit board of a mobile phone

I need to identify this component which I found on a circuit board inside a mobile phone.
0
votes
1answer
123 views

Hardware reference design for a phone [closed]

I want to make a simple box with one button. Pressing the button will send a SMS Text message to a preprogrammed phone number. I have not designed a phone hardware before so looking for some simple ...
-5
votes
1answer
348 views

how to convert 1.5v 150ma to 5v 2 amp?

i want to convert 1.5 v 150 mamp to 5 v 2 amp. Is this possible ? if possible how to make circuit of this ? thanks.
5
votes
2answers
437 views

Is it worth it to go full stack as an embedded engineer? [closed]

In big companies, they tend to separate embedded engineers by disciplines such as firmware, hardware, interface software, and PCB layout. Still, I think it's more fun to work 'full stack' and build ...
3
votes
2answers
425 views

Is one accelerometer enough for detecting tilt/orientation of a rigid body?

I posted this question earlier in physics.stackexchange, but I think this is actually the best place for it. I’m not familiar with sensor hardware, and I don’t really know how an accelerometer works. ...
1
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0answers
89 views

What connector is this?

I need a cable for something I'm working on, but I don't want to just cut off the connector for the existing cable, can you help be identify the type of connector this is so I can buy a new connector ...