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Questions tagged [hardware]

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

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1answer
50 views

Processor-in-the-loop for the design of a diagnosis system

I'm studying the development and implementation of a diagnosis system. I would like to understand what is the processor-in-the-loop, but there isn't any Wikipedia page (while there are for hardware-in-...
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1answer
46 views

ICL3232 and SN75C3232 difference

I'm using ICL3232EIV-16Z-T in one of my projects for UART communication. As per the datasheet, the max speed is 500Kbps. But I've tested this IC for baud rate up to 921600 and there is no data loss. ...
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1answer
88 views

Strategy against Side Channel Attack

I am newbie to Hardware Security. While studying Side Channel Attack, I realized that power consumption profile of electronic control unit is a key to encrypt what algorithm runs on it. I thought ...
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1answer
91 views

How to implement 32-bit adder logic using two 16-bit adders?

I've been trying to implement a 32-bit adder by instantiating two 16-bit adders. The code is compiling but failing some test cases. I don't know what is going wrong in this. verilog code ...
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1answer
19 views

Pull up resistor selection for LIN bus

What exactly will happen if I use 1.2K ohms at LIN master node pull-up? Why does the LIN protocol spec recommend to use 1K typically?
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3answers
166 views

circuit for hot-pluggable device

I have a scenario, where device A provides 24V, device B converts 24V to 3.3V and feeds it back to ...
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1answer
57 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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0answers
26 views

Will USB 3.0 still work in Super Speed Mode(SS) if I disconnect D+ and D- Lines? [duplicate]

As I understand D+ and D- Lines are for backward compatibility to USB 2.0 modes. So if I don't require backward compatibility to my USB 3.0 Device, Can I disconnect D+ and D- Lines or use those lines ...
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0answers
38 views

JTAG scan chain interrogation fails

I am currently trying to get my Bus Blaster v4.1a to work. I want to use openocd to communicate with a device over JTAG. The device that I want to communicate with is a Qualcomm_qca4531. First of all ...
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0answers
43 views

capacitor selection for charge pump

In one of my project i need 12v logic level (for programming controller) and my circuit is running on 5v. So, instead of using 12v supply i am thinking to use charge pump circuit because i just need ...
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2answers
63 views

Hard disk erase data

How do hard disk erase data?As far as I know, the hard disk stores data like this: The write head contains a coil of wire with a core of iron.When current passes through, depending on the direction ...
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0answers
36 views

Optical Isolation of BNC trigger?

I am wondering if there is a more practical way to provide optical isolation for a BNC trigger. I am currently using the following: https://www.eagleharbortech.com/product-categories/fiber-optic-...
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1answer
65 views

Why must a block in NAND SSDs be erased before it can be reprogammed? [closed]

Before programming a NAND based SSD in page-level we have to always erase by block-level which increases write amplification. why is it so and how do we mitigate it? what is the necessity of erasing ...
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3answers
91 views

Power Supply Earth for Bench Testing

I work in a typical electronics lab, with resistive earth mats, ESD straps and isolated DC power supplies to test prototype PCBs. I prefer not to use the power supply earth-ground, and to leave the ...
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3answers
118 views

VHDL process' sensitivity list

I do not understand the precise role of the sensitivity list in a process in VHDL. For instance, consider an architecture with 3 input signals: a, b, c. I read that if we write: PROCESS (a, b) we ...
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1answer
57 views

Smart vs Intelligent vs Adaptive vs Advance (etc) Embedded Devices [closed]

I hope my question is not off-topic here. I am asking it here because it is directly related to the hardware devices which are primarily based on MCU's. These Embedded System devices are used every ...
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2answers
52 views

Is it ok if I use all pins on non AC connector for AC

I intend to use non AC connector Hirose DH40 and DH37 for single AC line (230VAC). Connector single pin is rated 30V 0.3A. They did also did a test for 100VAC for 1 min. Plan is to use two ...
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1answer
256 views

VISA: (Hex 0xBFFF0015) Timeout expired before operation completed

I'm writing a simple code in Python to remotely send commands from PC to RSHameg HM8134-3, using USB. I'm using visa to do so. Something to note, when I write to it, it doesn't give me any errors(...
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1answer
62 views

Multiplex Analog pin and digital pin on single pin

I have to manage one single analog pin with other digital IO. I am using a PIC micro, where I have utilized all the pins and I want one more pin for analog input. At the current stage, I can not ...
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0answers
436 views

What is the function of CLKREQ and PEWAKE when those are used in PCIE?

I could understand The CLKREQ# signal is used by the L1 PM Substates mechanism. And PEWAKE signal is used to wake up the ROOT COMPLEX(RC) during the sleep mode. And these two signals are bidirectional ...
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1answer
36 views

create sr_latch from gates in verilog

consider this file : tb_sr_latch.v ...
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3answers
2k views

Can it be proven that running a GPU at high temps is bad for the card?

If you continuously run your graphics card at between 80°C and 90°C (176°F and 194°F) is it actually bad for the graphics card? I.e. does it reduce the life of the card? Can this be proven? Or is it ...
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0answers
39 views

Issue on charging current while switching two power sources

The circuit is to switch the voltage for battery charging circuit and not allow the solar power to 'other load' circuitry. The charge current is set to 1A where in this configuration it draws only ...
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1answer
67 views

stm32 drawing current from 40 outputs at the same time

I have an hardware question about stm32 family. I am designing a circuit with STM32F103VB. datasheet mentions that i can draw up to 25 mA current per pin(page 37 table 7). I need to drive 40 npn ...
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2answers
73 views

Software vs hardware-defined GNSS receivers

I am conducting research into the accuracy of smartphone positional fixing accuracy. I have come to understand that smartphones use software-defined receivers rather than hardware-defined receivers. ...
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1answer
108 views

Why am I getting a red wire for my out?

I am attempting to create an output that goes on for a certain amount of time an then goes low for a certain amount of time and my out simply won't simulate. Attached is my code, test bench, and ...
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1answer
74 views

Reverse Engineer DIN 5-pin connector

Summary I have a digitial guitar amplifier that can be controlled via a footswitch. The footswitch is connected to the amplifier via a DIN 5-pin cable. I want to be able to control the amplifier with ...
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1answer
104 views

Supplying TTL Signal via USB

I have two pieces of hardware I'd like to interface with via USB. The first are 2002 Series Actuated Valves and the second is a Mass-Flo Controller for regulating gas exchange. To my (admittedly ...
0
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1answer
68 views

Reading data from an iPhone 5 [closed]

A close person got hit by a car and died a few years ago. The persons iPhone flew trough the air. The police was not able to turn it on and mentioned that it would be impossible to collect data from ...
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6answers
4k views

What kind of hardware implements Fourier transform?

I looked around online but I found nothing relevant. It is very difficult for an electronic device to decompose a signal in different frequencies. How this is done at the bare metal level? Any ...
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0answers
44 views

Logic Style Level Vs Hardware Level

In the book: Advanced DPA Theory and Practice: Towards the Security Limits of Secure Embedded Circuits 1, it is explained that the countermeasures against Side-channel Cryptanalysis could be ensured ...
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3answers
129 views

Step up 5V to a range of 7V - 12V [closed]

I am working with the STM32 MCUs and I wish to step up a 5V pin to a range between 7V and 12V. In summary I wish to power the second Board from the first board. Thanks for any reply.
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1answer
43 views

Solar variation tolerance for a solar panel

How to estimate average variation of input solar radiation that would be tolerable for a given solar panel? On what parameters will it depend?
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1answer
60 views

Cache programming techniques

I am trying to understand hardware Caches. I have some understanding, and I would like to ask if my understanding is correct. I understand that there are three types of cache mapping; direct, full ...
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3answers
177 views

Are creepage and clearance value in common standard relative to ground?

So I have been researching creepage and clearance for a few weeks now and I think I have a pretty good understanding of the concepts. However what I do not understand is some of the interpretations of ...
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2answers
113 views

Measure laser with photoresistor (LDR)?

I want to make a simple setum, where I can measure the opacity of air. I want to use a simple laserbeam, which I shoot across the room, and on the other side I want to measure how much is blocked/...
0
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1answer
83 views

What program would be appropriate for designing a reimplementation of the TurboGrafX16 at gate level?

To be clear, I'm looking for a program I could use to redesign the TurboGrafX hardware at gate level, but to gate to gate, just for functionality. Also, given that I'm interested in GPU design, what ...
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0answers
90 views

Why is 3.5 mm audio jack so long (about 19 mm)? [closed]

The designers of 3.5 mm audio jack made the decision to keep it's length long (about 19 mm). They could have easily gone shorter lengths. Does longer length provide some noticeable improvements? From ...
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3answers
85 views

Micro programming and hard wiring

I have a question about the details of microprogramming and hard wiring in CPU architecture. In hardwiring, we write a code, the compiler translates it to the ISA, then the ISA is run in the hardware....
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5answers
3k views

UART- a protocol or hardware? [closed]

Some say UART is hardware, some say UART is one of the serial communication protocol. UART is a protocol UART is a protocol UART is Hardware UART is Hardware
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2answers
99 views

Simulate Arduino keypad with Arduino

I came up with idea to create a simple keypad lock using this ( Keypad Matrix 3x4 https://grobotronics.com/keypad-12-button.html?sl=en https://learning.grobotronics.com/el/2013/07/using-a-3x4-keypad/ ...
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2answers
257 views

How do we find the bandwidth of a bus?

The data width and cycle rate are used to determine the bandwidth, or the total amount of data that the bus can transmit. An 8-bit bus (1-byte data width) that operates at a cycle rate of 1,000 MHz (1,...
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2answers
482 views

24 bit adc to read +/-10V analog input signal

I need to read a sensor data which gives analog output(range is +10V to -10V) and convert it to digital form using 24 bit ADC and then store it to a memory card. I have some experience with PIC ...
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3answers
84 views

Hardware requirements for 10Gbps line rate packet processing

How do I calculate the horse power required for worst case packet processing scenarios? First, a little more background, I'm building a device for packet analysis. My test box currently runs on Linux ...
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2answers
94 views

What properties should I look for in a microcontroller if I just want to work with incoming 16 bit data?

I am very new to picking microcontrollers for projects. I have a project in which I have 16-bit data coming in from an amplifier/ADC. Simply put, I would like the microcontroller (very low power and ...
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2answers
1k views

mips single-cycle branch verilog

I'm fairly new to Verilog, hardware design and computer architecture. Nevertheless, I've had a go at designing a simplified MIPS processor. It seems to mostly work fine but whenever I simulate it, it ...
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1answer
167 views

Why overflows are omitted in the non-restoring hardware binary division algorithm?

I'm reading a book about a non-restoring binary division algorithm, for example 52_octal divided by 41_octal: ...
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1answer
107 views

How to build (from scratch) a GFCI Circuit? [closed]

I am looking to understand what is the circuit inside a Ground Fault Current Indicator (GFCi). What does the circuit look like? Simple google search is not yielding good results about the guts of it.
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2answers
254 views

Automotive circuit to power ATTINY

Trying to make a simple but reliable 15-12v to 5v circuit to power the ATTINY85 from an automobile (15v-12v), wondering if I have the right components and ratings, I don't know a lot about circuit ...
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2answers
68 views

Custom Tab-Shaped Plug

I'm designing a device that plugs into a base and am looking for clip-like part that will take a metal tab and transfer a small current (5V) to an LED in the device. The user should be able to pull ...