Questions tagged [hardware]

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

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HDMI: Can a computer still detect a monitor properly if some of the TDMS pins/wires are damaged? [closed]

Can a faulty HDMI-cable with damaged TDMS pins/wires still work to the extent that the computer can still detect the monitor, but the monitor just will not display anything (except for no signal)?
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Where is bios stored in MSI GF63 THIN 9SC laptop? [closed]

I have wanted to know in which component the bios of my laptop is stored, but I cannot identify where it is stored. I have read that in newer laptops the configuration is stored in eeprom memories and ...
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-3 votes
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Where can I buy mini cameras with the zoom in feature? [closed]

I'm looking for a mini camera (smaller than the palm and lightweight) which supports zooming in within the app. As I'm a beginner to electronics, I'm unsure about what terms to search. I've searched ...
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2 votes
1 answer
33 views

USART stop bit not pulled high during nRF update

I am using an STM32L4 chip that sends an update to the nRF52832 on a ublox module over USART. I assume the nordic chip is in the bootloader during the update. We get a UART error: 4 and when we ...
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10 votes
3 answers
2k views

What would it mean if a circuit board all of a sudden works after it doesn’t work for some time?

Sorry for my noob question. I am very new to debugging hardware circuit boards. A circuit board was not working. After measuring a voltage rail it was jumping from 12V to 0V, and back to 12, etc. what ...
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2 answers
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Embedded firmware and app? [closed]

I am in Hardware Design trying to get into Embedded Systems, so please pardon me for lame questions. So, Scenario 1 : I upload an Arduino Sketch into Arduino with the help of Arduino Bootloader . ...
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1 vote
1 answer
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Is there a one-to-one relationship between bits and transistors?

I am a beginning student of computer science trying to understand hardware architecture. I am wondering if 1 bit is always equal to 1 transistor. If not, what is the relationship between bits and ...
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4 votes
0 answers
119 views

Custom RP2040 PCB Not Detected by PC

I designed a custom RP2040 to control some 24V LED strips. The official hardware design guide from the Raspberry Pi Foundation is what I followed for my design. It was then sent out to JLCPCB for the ...
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-3 votes
1 answer
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Hardware components for cancer detection using computer vision [closed]

Can anyone please tell me what are hardware components mentioned in this project? I can see a total of three hardware components. But I am not able to recognize what are those.
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0 votes
2 answers
74 views

What is the minimum capacitance Cx on LM555

I want to measure a capacitance between 10pF and 500pF and feed that information to a microcontroller. I was wondering if a CMOS LMC555 configured in astable operation could do the job with the ...
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1 answer
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NVIDIA Jetson custom carrier board does not booting when PCIE device is attached. How can I track the problem?

I have designed an custom NVIDIA Jetson carrier board based on P3449-B01 Jetson Nano Carrier Board reference design by NVIDIA. The carrier board is working fine, the linux is booting up, however when ...
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1 answer
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Can a PS/2 keyboard be converted to USB hot swap (plug)? [closed]

I have an old keyboard made in 1998, and I want to use it, but my computer does not have a PS/2 port. I bought an adapter to convert the PS/2 of the keyboard to USB. I know PS/2 cannot hot swap. But ...
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2 votes
1 answer
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STM32f7G-DISC hardware failure during working on LCD

I was working on some function to view ADC values on an LCD, and suddenly the LCD went wrong and noisy. I felt the board's pwr pin_header was hot, also, after reset the problem persisted. I've found ...
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0 votes
1 answer
94 views

Which sensor to use to detect when someone walks past the sensor?

I am working on a electronic project. The goal is to detect motion when someone starts walking up the stairs. When this happens data is send to microcontroller and lights are turned on.The problem is ...
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-2 votes
2 answers
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what is a good microphone for a real time voice activated switch? [closed]

My team and I are trying to build a voice-activated switch. We are trying to look for a good microphone that can pick up sound (as an analog input, no digital input) and it should also work at a ...
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0 votes
0 answers
80 views

Getting the same value from a pH Probe

I am totally new and looking for some advice, please. I am trying to connect a pH Probe (PH-4502C) to a Wemos D1. I believe to have wired this up all correctly, I have wired the PO pin to the A0 pin, ...
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1 vote
2 answers
40 views

Replacing USB251xB/xBI USB 2.0 HUB Controller

Due to Chip Shortage problem, I need to replace Microchip USB251xB/xBi USB 2.0 Hi-Speed Hub Controller with USB3503T-I/ML I'm using only two USB 2.0 ports. the chip will be used in an Industrial ...
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1 vote
2 answers
65 views

Pin-based security chips for Arduino?

These cryptocurrency wallets like Coldcard can be unlocked by a simple PIN, and are fairly safe. I believe that they use a security chip that stores information and only delivers with the right PIN. ...
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1 vote
1 answer
83 views

What is the best approach to learning hardware design? [closed]

I am a self taught software developer who has recently become interested in embedded systems. I am interested in learning how to design PCBs and learn about the electrical components the PCBs house. I ...
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1 vote
3 answers
204 views

Do hardware design engineers design circuits from scratch? [closed]

I'm new to hardware prototyping and circuit design. Where do ardware engineers look for reliable circuits that would work for the first time of prototype? I know this is a general question. I'm ...
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0 votes
1 answer
59 views

Connecting MISO and MOSI signals between master and slave

My goal is to flash the external SPI of ICE40 FPGA through Dediprog before powering on the FPGA and let the FPGA read the image file in the SPI after powering on the FPGA. after trying doing this on ...
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1 vote
0 answers
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Developed USB device not recognized on Windows/Linux - device descriptor error - RTL2832 dev board

I am developing a hardware where I would like to use an SDR circuit (RTL2832). However on the first prototype the circuit does not work. It has a USB interface however when I connect it to PC the ...
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1 vote
2 answers
181 views

RP2040 Custom PCB BOOTSEL not working

I designed a PCB that uses the RP2040 microcontroller. I just received it and wanted to power it up and put my code onto it, but it doesn't seem to work fine. I am struggling to find out what could be ...
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-1 votes
1 answer
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What is the current flow in a GPU? [closed]

Today, I was playing GTA 5 on my laptop. In the performance tab, I saw that my GPU(GTX 1650 with Max-Q design) power is 34 Watts and the voltage of GPU is 0.8v. So, according to P = VI, I = 42.5A. I ...
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0 votes
2 answers
103 views

What servos are in hard drive write head? How are they so accurate yet so fast?

I just saw this demonstration of a hard drive seeking online. It made me wonder what type of servo motors are used to move the write heads, and how do they move so fast, yet are accurate enough to ...
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1 vote
2 answers
83 views

What are up-screened components?

What are up-screened components/devices in the frame of qualification of electronic components? How is it done?
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1 answer
112 views

Reverse engineering PCB [closed]

I am trying to obtain the layout and eventually netlist/schematic for PCBs I have. I am wondering what others have tried to understand how a piece of hardware works, obtain a reference design, and ...
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-1 votes
1 answer
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what kind of controller could i use? [closed]

I'm newbie about electronics hardware. My question is; I listed electronic materials at my project. I have 41 digital output and 20 analog input. What kind of controller could i use for my project? ...
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0 answers
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How do we simulate the circuits which have processors. Is there any way we can simulate the circuit before going to the pcb manufacturing?

I'm working on a project on which I'm using a snapdragon 410e processor. I'm done with the circuit design since all the data is available online for designing the PCB. But I want to simulate the whole ...
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1 vote
1 answer
56 views

Nonideal RF coupler model, admittance matrix in QUCS simulation

I'm trying to simulate a nonideal directional coupler in QUCS. Unfortunately, the only model available is the ideal one without taking into account the isolation or insertion loss values. Initially, I ...
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0 answers
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Hardware for time-gated signal

Hey, I am working on a design for an acoustic sensor, I am applying an excitation field at a certain frequency (a) and recording the response of the sensor (b), however, for my application, I only ...
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0 votes
1 answer
141 views

How is a Floating Point PRNG designed

Forgive the breadth of my question, but from understanding of basic digital circuits, an integer PRNG outputs a random number by using the XOR of certain bits of a LSFR. using an XOR tap into bits to ...
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1 answer
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synthesis output sense making

I have the following verilog code that I fed into yosys. The output doesn't seem to make sense. Can someone please clarify? ...
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0 votes
2 answers
95 views

Powering Ardunio Nano with external 5V Schematic

This is the continuation of my (previous question). In that, it is suggested that powering a Nano with an external 5V is not a good method. My team told me to put an option in any way. I found this ...
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4 votes
1 answer
140 views

How to minimize microcode complexity in 8-bit home-brew CPU

tldr; I built and later extended Ben Eaters 8-bit breadboard computer. After the initial build I integrated 16-bit program counter and memory address registers, redesigned the instruction set and ...
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1 vote
2 answers
629 views

Powering Arduino Nano with 5V

I am new to Arduino. I need to use Arduino Nano in one application in which we will be supplying the 5V regulated power from the external world. At the same time, we need USB communication also. The ...
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0 votes
2 answers
69 views

wait syntax question

Still reading Thomas Moorby book... on the IPC hand shaking part, I notice that the the wait syntax of the following two examples seems equivalent... why is the syntax in the first example offered at ...
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6 votes
4 answers
2k views

What is the purpose of using an analog optocoupler?

What's the purpose of using an analog optocoupler in this circuit? Why not a digital one? An industrial battery charger. Normal operating voltage to monitor ranges from 120 V (Battery low) to 180 V (...
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1 answer
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synthesizability of the code

I got this piece of weird code in a text book. Simulation seems fine, the synthesis run returns an error on line #7... someone please comment on this piece of weird code... Iverilog has no issue ...
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-1 votes
1 answer
86 views

synthesis difference between the two almost identical procedural assignment

I have the following 2 procedure assignment blocks that perform very similar jobs. first one reg s, i; reg out; always @(*) begin out = 0; if (s) out = i; end ...
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1 vote
1 answer
127 views

behavior of a pipelined divider

Divider can be made combinational, which uses more logic gates.. Divider can be made sequential, the throughput may stay the same, i.e. use as many stages as the width of the dividend (assuming width ...
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1 vote
0 answers
51 views

Resetting Microchip MM7150 to reliable state

So, I recently acquired the MM7150 chip from Microchip for use in a project. It functions as a combined 9 axis motion sensor, combining a gyroscope, accelerometer and magnetometer. Specifically, I'm ...
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0 votes
1 answer
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DIY: emulate button-press on garage door remote

I have a 3-button / 3-door garage door remote powered by a 3V CR2032 battery. I would like to use it in a DIY project where, by connecting it to a 3V circuit, I hope to programatically open/close the ...
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3 votes
3 answers
78 views

Bench PSU "Ground-Earth-Reference" connector - what's it called?

I have need of some of those little metal links that let you bridge between GND and Earth posts on a typical benchtop-PSU. But I'm damned if I can contrive a google search that yields any useful ...
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0 answers
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How to identify which region of the mother plate belongs to a temperature zone identified as ACPI Temp 1 or ACPI Temp 2

I'm having problems with a notebook, which reboots when a certain temperature zone exceeds 40 degrees, but with the board's temperature sensor and the operating system and linux tools, I can get ...
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0 answers
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6 Pin USB Type c connector issues

I want to use a Type C connector to send signals from a simple switching circuit. I am totally new to using USB, I ordered a 6 pin female Type c connector. I am not able to find out proper pinouts for ...
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2 votes
2 answers
128 views

What are these connector threaded standoffs called?

These threaded standoffs are used on DB connectors and seem to be flared onto the connector flange. They are used to secure two mating connectors together. What are they called? What kind of tool is ...
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-2 votes
1 answer
139 views

What electronic component can send pulses? [closed]

In analog hardware synthesizers, an electric pulse is sent by an oscillator to a sound-emitting device for it to create sound at the desired frequency. What device generates this pulse? What is the ...
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0 votes
0 answers
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SD card detection issue with Zynq ultarscale+ MPsoc SoM based circuit

I am using 4-bit SD interface in one of custom carrier card for on Zynq Ultrascale+MPSoC SOM. When I boot boot the carrier card in petalinux while mounting in the kernel i get below error prints, and ...
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0 votes
0 answers
286 views

Handling Bel constraint conflict critical error on Vivado

I am trying to place 20 Ring oscillators on the FPGA. I have followed the user constraints Xilinx guide on XDC macro creation and the video - ([XDC Macro][1] ). I tried initially with placing 5 Ring ...
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