Questions tagged [data]
Data are values of qualitative or quantitative variables, belonging to a set of items
324
questions
2
votes
1
answer
586
views
Transmitting through IRDA as if its a native serial port. Possible?
I'm currently making a lazertag project that utilizes the standard UART data format for data I/O.
Before I go make up another circuit board that connects a photo-transistor that senses a laser beam ...
CommunityBot
- 1
0
votes
0
answers
33
views
Data collection board
Im currently working with the DC718C data collection board, and I'm using PScope to collect the data and MATLAB for further processing.
I want to know if it's possible to collect more than 131072 ...
- 9,205
18
votes
8
answers
3k
views
Data transmission protocol with two lines and no explicit clock
Are there communication protocols that transmit bits using two lines A and B as follows:
When line A is toggled, a 0 is sent.
When line B is toggled, a 1 is sent.
I currently use this to push out ...
- 2,364
0
votes
1
answer
54
views
Interrupted SSI clock sequence
I measured the following clock and data sequence (time axis is in microseconds) between a Beckhoff KL5001 encoder module and a 19-bit SSI encoder. Apparently the clock is interrupted 3 times before ...
- 34.1k
1
vote
2
answers
735
views
What is the best LED driver to use for this setup - Help with WS2815 data amp over long lines
Currently have 5 m WS2815 strips installed running from 18 AWG wiring connected to 12 VDC Meanwell power supplies and our controllers (SP108,SP102,SP608), power injection on all lines. When we tested ...
CommunityBot
- 1
2
votes
1
answer
671
views
Altium Designer Libary Ref Field Missing
I'm trying to create a MySQL database for my Altium company library. I've created a MySQL database with utf16 encoding that contains tables for each category of components. Here is an example table:
<...
CommunityBot
- 1
0
votes
0
answers
66
views
Losing external EEPROM data after power Cycles on ESP32
Sending "1" starts the write operation into the eeprom every 1 second to the next available address, and sending "2" starts reading the written values into the eeprom. When there's ...
- 21
0
votes
1
answer
56
views
Can S-ATA cables wear out?
I have a hardware S-ATA disk imaging device here. You connect a SOURCE disk and a DESTINATION disk and the device makes an image of the source disk onto the destination disk.
After using for a couple ...
- 10.8k
0
votes
2
answers
2k
views
How should I test my USB cables?
Some time ago, I purchased the FNB58 USB multimeter from FNIRSI with the intention of testing some of my USB cables. Ideally, I wanted to throw away those that are redundant and/or those that pose a ...
- 111
1
vote
1
answer
370
views
Using multiple ports to transfer data to single device [closed]
I have the datasheet of a camera which has various interfaces (computer buses) via which it can transfer data to other devices: I2C bus, CAN bus, RS-422 serial port. I know the camera can use ...
CommunityBot
- 1
2
votes
2
answers
59
views
Ladder Logic - Recognizing Pattern Failures
(First Post Here)
Something I want to look into adding to a production process is being able to recognize the same failure (that's in a pattern) and having the machine give an alarm once it sees the ...
- 176k
2
votes
1
answer
499
views
I2C data held low and clock held high
We are having issues with the I2C communication on our I2C bus and it seems like one of the INA233s on the bus is causing the issue. We are using the INA233s as current and power monitors. We use ...
- 173k
5
votes
3
answers
539
views
With modern connectors, is the metal shell used as a conductor?
Does the metal shell of a connector, such as USB and HDMI, serve a conducting purpose? The metal shell of my TV's HDMI terminal is corroded. Should I make effort to have it contacting and conducting ...
- 3,385
0
votes
1
answer
84
views
Gyroscope dps conversion
I am doing a data collection using an Axivity AX6 IMU equipped with an accelerometer and gyroscope (BMI160). I am using the OMGUI software to start the collection where I can choose between different ...
- 1
0
votes
0
answers
70
views
EAGLE Schematic connection check (USB C)
I'm a beginner in PCB designing and I want to use a USB C port on my custom PCB for powering and data. For this purpose, I have created below schematic in EAGLE.
My questions are:
I connected DN1 and ...
- 14.7k
2
votes
3
answers
75
views
Power Cycling USB
BACKGROUND
I am connecting a USB device to a PCB with a microcontroller. The USB must be power cycled (plugged out and in) in order for the USB to be recognised by the software. The USB connector will ...
- 16.2k
0
votes
2
answers
125
views
What do the letters mean on this LiPo (or Li Ion) battery?
I’m trying to find a replacement battery for my Bluetooth earphone as they drain out very fast. It is a 3.7 V 55 mAh.
Looking through the options I see batteries with better capacity but the letters ...
- 56.7k
0
votes
3
answers
538
views
Configuring SPI circuit design for use in 485 transceiver for long range data transmission (50 meters plus)
So quickly getting out of things I have previously done in trying to send SPI controller signals across long ranges using either 18 AWG cable or based on all the recommendations we have been reading, ...
CommunityBot
- 1
1
vote
1
answer
163
views
PS/2 Mouse Movement Frame - How do I detect, or correct errors on reception from device?
This question is from a project of mine I have been working on for about 3 months now, and I reached a point where I was going to go the route of using an interrupt based handler for my packet ...
- 171
1
vote
4
answers
20k
views
How is data stored in memory beyond 0s and 1s?
I am working as software engineer. As far as I know the data being stored in memory (either HARD Disk or RAM) is 0s and 1s.
I am sure beyond 0s and 1s there are different ways data is being stored in ...
- 13.5k
0
votes
1
answer
67
views
Which standard use for custom communication DC
I want to transmit data and power over 10 meters at 12 volts with 1 amp. I don't know if I could do it using UTP, because that's a standard for other things. Which standard should I choose? Number of ...
- 66.1k
0
votes
0
answers
43
views
I want to get the data from my fraba encoder directly to my pc without using PLC
The Fraba Encoder which I have is OCD-EEA1B-1213-C10S-PRM Ethernet/IP encoder in which we to get the data from the encoder to show to the PC where we will not use PLC and the communication will be TCP/...
- 1
0
votes
1
answer
71
views
How to measure time between incoming packages on an FPGA?
For measuring the speed of incoming data packages on an FPGA, would you use a clock that is connected to a counter and each time a package is detected, it would store the time?
And if there would be a ...
- 9,205
-1
votes
1
answer
304
views
How to connect LEDs to D+ and D- of USB 3.0 cable [closed]
I need to connect LEDs to USB 3.0 cable that connect to PC and to embedded device.
I want visual control to see data transfer by this USB cable and want to connect LEDs for this purpose, like Ethernet ...
- 4,837
4
votes
2
answers
1k
views
Transmitting binary data from scratch via radio (wireless)
What is the basic concept of transmit binary data wirelessly or from radio?
Here are so far my knowledge about it.
Any digital data (image, sound, video) is represented by binary digit (bit).
Binary ...
- 3,054
-1
votes
2
answers
362
views
Is it possible to combat SR Latch oscillation or there are better alternatives?
I need to store a bit value and then ignore any attempts to store/change it again until it's reset by another signal. So I figured the SR Latch is suited for the task. However in my project there is a ...
- 13.3k
8
votes
3
answers
943
views
Photodiode speed limitation
I have a system which demands optical data transmission since rotating parts are present. A mixed mechanical-electrical engineering project has led us to use photodiodes to receive data from one ...
- 82.4k
0
votes
1
answer
975
views
Difference between Li2YCY and LiYCY
I would like to ask about the difference between Li2YCY and LiYCY TP cables.
As far as I know, the main difference is that the Li2YCY has core insulation based on PE and wrapped screening made from ...
CommunityBot
- 1
2
votes
1
answer
1k
views
Verilog signed numbers representation
I am confused as to when the '-' sign is used and when 's' is used. This post is somewhat helping, although not entirely.
Please correct if I am wrong:
For example, to interpret 8'sd244, we write 244 ...
- 8,392
2
votes
2
answers
503
views
How do drives deal with user overwriting data?
Let's say I create a text file and write "Hello world!" to it. I stick with the default 4096 byte allocation size (assuming NTFS file system). I wonder what happens when I change (overwrite) ...
- 149k
2
votes
3
answers
82
views
Can polarity protection circuit be useful for also data transmission?
For example, CANBUS has two transmission lines CAN_HIGH and CAN_LOW. Polarity matters. Would the performance be affected if a polarity protection circuit with couple of diodes would be implemented?
...
- 31
4
votes
1
answer
339
views
Combine uncertainty of multiple measurement instruments
I'm currently working on a project where I'm trying to figure out if there exists a significant difference between measurement instruments for RF power measurements. I will measure multiple Bluetooth ...
- 94.8k
0
votes
0
answers
184
views
Do there exist Touchstone/S2P/SnP files for capacitors and inductors in the public domain?
I'm writing a Touchstone Perl module for reading and transforming Touchstone files to different parameter (S, Y, Z, etc) and format (DB, MA, RI) types. (Touchstone is also known as .s2p files or s-...
- 1,912
2
votes
3
answers
171
views
Is it better on two closely connected microcontrollers to send nibbles with an ack or a byte with a delay for an ack?
I'm trying to figure out the best approach to transfer high-speed data one way between two microcontrollers (with their own crystals of the same speed) of the same variety (between AT89C4051 and ...
- 27.4k
0
votes
0
answers
22
views
What is the maximum data rate of AS-Interface?
After online search, I could not find exact information except some marketing words. It is said that it supports up to 100m and can be extended up to 600m but there is no information of maximum data ...
- 457
0
votes
2
answers
176
views
Is it possible to use I2C fast mode+ with 30m cable?
I2C can reach up 1Mbps with fast mode+ and 3.4Mbps with High Speed mode. I just want to ask if it is possible to use 3.4Mbps mode with longer cable and what is the max. possible cable length.
- 149k
0
votes
1
answer
192
views
Is there a database containing typical transistor data and characteristics? [closed]
I guess the title says all, but basically I'm looking for a searchable database on typical transistors' data. Such data would ideally be arranged like:
...
- 5,429
0
votes
1
answer
146
views
Hamming code question
Suppose we have m data bits and n parity bits. In order for the Hamming code to function: $$m+n<2^n-1$$
If we have 3 parity bits we can have up to 4 data bits. But lets say we don't have 4 data ...
- 14.7k
1
vote
3
answers
10k
views
Threshold voltage data analysis
I want to determine the threshold voltage of a diode from the graph of iv characteristic diode.
From the point of view of the data analysis I do not know how to do to find a specific value.
I have ...
- 9,205
5
votes
4
answers
6k
views
How often does "bit rot" occur?
I have been thinking about the permanence of information lately and I was wondering at what rate a bit on a consumer spinning disk hard drive is corrupted and what are some factors that speed up or ...
- 1,245
-1
votes
1
answer
66
views
Instrumentation Tools for Collecting Data in DRAM accesses
We can use instrumentation tools, such as Pin tool, to collect memory accesses of an application running on a system. The type (read or write) and memory address can be collected. How about data? Can ...
0
votes
2
answers
5k
views
Send float with Serial Port
I'm trying to send float temperature data from stm32f103c8t6 to qt application. When I try tosee value with Keil I can. But When I try to transmit to App I got some error about convering uint8_t to ...
- 82.4k
0
votes
0
answers
235
views
Transcieving 125khz rf signal
Does anybody know if it is possible to connect a coaxial cable to the tx rx pins on a wireless module ? I am trying to send data via coaxial RG58 cable. Or would a twisted pair be more suitable? I ...
1
vote
1
answer
187
views
Sliding window protocol
In the sliding window protocol when the receiver sends RRn to the sender the receiver's window is shifted to the right now starting at the n position correct?
Suppose this is the window of the ...
- 8,517
0
votes
1
answer
207
views
Timing Arduino response with ADXL345 accelerometer's data rate
I'm currently working on a system that calculates the velocity by integrating the values of the acceleration.
I'm using the ADXL345 accelerometer with a ESP32, and so far, everything's going good, i'm ...
- 13.3k
0
votes
1
answer
2k
views
How to get RMS voltage and frequency from datapoints read from an ADC?
I have an ADC that samples 4000 times per second or 0.25 ms interval per sample. I would like to extract the RMS and frequency value of the signal being read. How do oscilloscopes and multimeters do ...
- 71.4k
0
votes
1
answer
110
views
How are these Data Buffering Methods same or different from each other?
I am trying to understand the operation of a Serial Bus protocol converter chip. It connects with the serial bus on one side and on the other side it provides its data on the MCU host interface.
...
Null♦
- 7,603
0
votes
1
answer
64
views
Do some microcontrollers require data to be loaded in temporary memory before programming?
When I programmed the AT89Cx051 series of microcontrollers, I didn't have to use special memory to program the data, but now even though I'm following the instructions in the datasheet (found from ...
Null♦
- 7,603
1
vote
1
answer
160
views
How to reconstruct phase data from magnitude only data in a frequency domain function?
I'm trying to do a reverse-engineering a software called LEAP from the now disappeared LinearX company. This software can perform an operation called "Minimum Phase Transform". This takes ...
- 71.4k
1
vote
1
answer
259
views
Obtaining data from parallel port without the "phantom power" problem
After making failed circuits in the past, I learned that the cause is that the parallel port was producing "phantom power" (aka powering the circuit). This is because I plugged my circuit into the ...
CommunityBot
- 1