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Questions tagged [data]

Data are values of qualitative or quantitative variables, belonging to a set of items

0
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1answer
38 views

Maximising power received using two sets of data

I have done simulations where by I am varying two variables i.e. powerTransmit and frequency within an equation, for example: powerReceived = powerTransmit - 20*log(frequency) - 20*log(distance) The ...
0
votes
3answers
56 views

Does data rate increase with channel frequency?

It is commonly said that a higher channel frequency implies a higher data rate. For example, in https://www.howtogeek.com/222249/whats-the-difference-between-2.4-ghz-and-5-ghz-wi-fi-and-which-should-...
6
votes
1answer
278 views

Olympus TG-Tracker : What does this data stand for?

I'm sorry if this comes to wrong forum, but here goes. I got this new action camera which tracks the following kind of data (edited): ...
3
votes
1answer
3k views

Calculating series resistors for I2C/SPI lines to reduce EMI and ringing

How do you determine if a series resistor is needed for I/O lines, and what value is needed? Where should the series resistor be placed? My assumption is the resistor should be placed as close to the ...
0
votes
1answer
38 views

Does a FIFO data buffer need to have the data be registered?

I'm trying to implement a 64 bit FIFO Data Buffer in Verilog. My design allows for data to be written at 4 bytes or 1 byte at a time, and I'm simply using two multiplexers with control signals for ...
0
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1answer
25 views

HC05 Bluetooth Ping without losing connection

I am currently working with the Bluetooth module HC05 using a Teensy 3.2 board. I successfully established a connection between the laptop and the board using Bluetooth. I can send data from the board ...
0
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0answers
37 views

How to spec a system to replay acquired data

Hope all of this makes sense... I record torque applied to bolts as part of an evaluation process of new materials. I have a rotary encoder, it pulses at 100ppr. My torque wrench gearing means 1 turn ...
9
votes
6answers
3k views

Is it necessary to separate DC power cables and data cables?

I have had this discussion with my colleague earlier. A DC power supply is non-alternating, so the magnetic field a DC power wire generates is constant (is it?). Now, I know the rule is to separate ...
4
votes
1answer
101 views

What determines the frequency of network cable

You have Cat6, 23 AWG, rated for 250Mhz frequency. You then have Cat6a, 23 AWG, rated for 500Mhz. Both are unshielded. How is Cat6a able to transmit data at a higher frequency then its counter part? ...
-2
votes
1answer
509 views

Getting experimental motor data for AI based fault diagnostic scheme

I am working on a personal project, which is an AI based induction machine fault diagnostic scheme. I do not have the required funds to purchase the hardware, i.e. the motors and data acquisition ...
0
votes
1answer
160 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 ...
2
votes
1answer
135 views

USB 3.0 power and usb 2.0 data

I am planning on providing a system with the option of powering via USB. Now the system will require greater than 100mA, so USB 3.0 interface will need to be used for powering the system. The data ...
0
votes
1answer
48 views

Erratic behavior of thermocouple input

I am reading temperature from a K thermocouple on a PLC which is then forwarded to a trending software to see the data on a graph. The thermocouple is in a water trough/reservoir. In fact, there are 3 ...
10
votes
1answer
868 views

Basic protection for USB interface

I have never protected my USB interfaces for microcontrollers until a USB port of my PC stopped working because of a bad connection aparently. So I'm starting to protect them but I found some ESD IC's ...
0
votes
0answers
119 views

Why is there no reponse from ModbusRTU slave using converter?

There are two devices: Eaton EM20/M (~like Northern Design Cube 400) Volison ADM-5850G Connected them like: Trying to get data from EM20/M which supports ...
-1
votes
3answers
138 views

Control WR and OE lines of parallel SRAM with only 2 wires while loading data with 8

This is my circuit in relevance to my question: I apologize for the messy wiring, but I did it that way to make my PCB production substantially easier. My problem is I only have 10 wires available ...
0
votes
1answer
47 views

What happen to a dff(flip flop) without input?

I have this question but I don't know what happen to a dff without an input is it always 0 ?? like this picture below the 2nd dff hasn't any d ??? Also, if someone can draw the answer of the question ?...
0
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2answers
436 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 ...
0
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2answers
1k views

How to extract data from an NAND chip with an NAND reader from iphone 6? [closed]

I am not an electrical engineer and I cannot take phones apart. I had an iphone 6 that suffered no water damage, no smashed screens, no dust... but suddenly it got an NAND memory issue. The phone ...
0
votes
0answers
19 views

Determing proper wireless parameters for HMTRP radio module

I'm trying to properly setup an HM-TRP FSK radio module to send and receive data the best it can at 56kbps. I think I'm wrong with setting it up to use 600Khz "receive bandwidth" and 160Khz "modulate ...
0
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0answers
28 views

Bidirectional data bus divided into nibbles not returning correct data - 8051

Since I have 10 I/O lines connected between two microcontrollers (AT89C4051 + AT89S52), I am trying to get away with elegant data transfer. Instead of spending months redoing an entire circuit board, ...
0
votes
1answer
47 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 ...
1
vote
2answers
146 views

Package detection in datastream on FPGA

Hardware: I have an asic-"sensor" which sends me 32-bit packages (serial). I need to detect this packages with an FPGA. When I start the readout, the sensor is sending me data-packages until I stop ...
0
votes
1answer
45 views

Using multiple ports to transfer data to single device

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 ...
0
votes
1answer
35 views

Implementing a simple logic equation

I need to do a lab that seemed like it was simple, but for some reason i cant get the right output for this function. its G(0)= T1T3'+T5T7'. These are data inputs.. I can only use NAND and NOR gates. ...
0
votes
1answer
71 views

What are the advantages of a wider bus in comparison to those of a higher clock frequency? [closed]

The aim is to increase data transfer rate. I understand each may have some drawbacks and advantages. Frankly I'm not knowledgeable enough to know of many so I'd like some input from others. I know ...
2
votes
0answers
75 views

Sending data from Simulink Matlab to development board F28379D

I'm fairly new to Simulink programming so bear with me. My project is to measure some parameters with the ADC of the board and send them over serial (SCI_A) to a Simulink file I'm running on my PC ...
0
votes
2answers
91 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 ...
1
vote
4answers
171 views

Fiber-optic transceiver ICs for applications other than fiber-optic Ethernet? [closed]

When we talk about fiber-optic transmission, we almost always talk about copper to fiber-optic Ethernet conversion using fiber-optic transceivers. But since fiber-optic communication is just ...
-1
votes
2answers
116 views

How do electrons travel in data transmission wires?

I've searched and googled quite a bit on this subject, but haven't found any concrete answers. I understand that pulses are generated at the transmitter's end to get to the receiver's end. More in ...
0
votes
2answers
113 views

Data over DC Power, mono-directional, simplest circuit

(To preface, I will probably just run 4 wires, with RS485 on 2 and power on the others, but this came to my head, and I started thinking about it.) I was thinking of a simple way to send simple low ...
0
votes
1answer
74 views

Can 74HCT buffers work just as well as 74HC buffers between parallel port and target?

I'm making a circuit to program the AT89S52 microcontroller in a serial fashion as follows: Call me paranoid but this time I'm using resistors on all outputs to the micro as well as RC networks on ...
0
votes
2answers
72 views

Schmitt trigger inverters or regular inverters for clean high speed data processing

I made a circuit in which data is passed in from phototransistors (part# PT334-6C) into a microcontroller (part# AT89C4051) serial port via schmitt trigger inverters (part# 74HC14) and a demultiplexer ...
11
votes
8answers
5k views

Saving data without a microcontroller?

Is there a way to save voltage data directly (without a microcontroller) to anywhere, like EEPROM, SDCARD, etc.? For example, I am using an MPX pressure sensor which gives 0V to 5V analog output. ...
1
vote
4answers
157 views

Does computer memory record the zero binary state?

It's been two years since I started reading about electronics and computer circuits. I fell in love with the homemade computers and the possibility of building one by myself. You will see: When ...
0
votes
1answer
56 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 ...
0
votes
0answers
58 views

Send data from MCU to Embedded Linux CoM

I'm using an ATSAME70Q21 MCU to record 32 channels of analogue data (via SPI ADCs) and 32 channels of digital data (via GPIO). My embedded device has an iMX6-based CoM (Toradex Apalis), which runs ...
0
votes
1answer
197 views

understanding of UART , if two devices share a common ground. How do they get to the same voltage level for a save data transmission?

My question is related to the common ground in a UART communication. So far, what I understand how communication in general works is: Distinguishing the voltage between two cables (one is a GND and ...
0
votes
1answer
32 views

Can a bilateral switch block transmitter interference and can my board still produce great audio?

I made a circuit in which an ISD1760 chip outputs music via an LM386 IC and I like the quality and volume of sound, however, when I run an HM-TRP transmitter on the same circuit board and the ...
1
vote
2answers
236 views

Does 8b/10b decoding take running disparity into account?

What's unclear to me in reading literature about 8b/10b encoding is how it is decoded. How an 8b word is translated to a 10b symbol clearly relies on the running disparity. But when it comes to ...
0
votes
1answer
57 views

Using my sensor values, what are relevant data analysis techniques?

I am currently trying to devise a system using gyroscope+accelerometers placed in on a hat/cap in certain areas of the head (Front-left, Front-right, Centre, Back-left, Back-right). I want to create a ...
0
votes
0answers
30 views

Calculating cell resistance in dependence from cell temperature from CAN bus logs

I'm part of a formula student team. When we go testing we are logging the CAN bus data the car produces to further understand what the car is doing. We log all the battery cell temperatures/voltages ...
-1
votes
1answer
167 views

I need help to identify a technology i only can define as “magnetic data pins” [closed]

I was interested in the "wireless" pins technology used on this here: Would be much appreciated if you could guide me towards some modules/components or the name of such tech. Or something similar ...
0
votes
1answer
68 views

Recieve serial data on multiple pins ATTINY85

I am working on a project in which multiple ATTINY's need to send numerical data between each other. In most cases the ATTINY wil have to receive multiple streams of data on different pins. See the ...
0
votes
0answers
231 views

3 external ADCs connected to STM32F7

Currently I am doing a project to develop a system with three external ADCs. I want to read the 3 ADCs at the same time. I bought the following components 3x ADS1256 / http://www.ti.com/lit/ds/...
6
votes
6answers
5k views

What kind of options are there for very high bandwidth long distance data links?

I'm considering a future product. A high definition (720p) video transmitter. Ideally a compressed MPEG link would be used but this would still require at least 80 Mbit/s. I'm not looking at a simple ...
0
votes
0answers
39 views

Faster 8051 not taking the slower 8051 pin status correctly

I'm trying to do a rather simple data transaction between two 8051 microcontrollers using a variant of the SPI protocol. The large one is a slave and the small one is a master. The documentation for ...
2
votes
4answers
521 views

Where should an increase in harmonic frequencies go in the Nyquist formula?

From the Nyquist formula that \$ Capacity = 2 \times Bandwidth \times log_2(L) \$, where \$L\$ is the level the signal represents, the total number of possible bit combinations the signal can ...
1
vote
2answers
86 views

What serial communication interface would work best for data logging when the nearest sensor and main MCU are (at least) 1 meter apart?

I would like to setup a "sensor array" which has 4 sensors attached to it. Each sensor is expected to send data at rates of up to 8 Hz. The data would be shipped off to an MCU that is around 1-2 ...
0
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2answers
155 views

NAND flash retention using USB charger?

NAND-based digital flash data storage devices such as SD,SSD,USBstick,eMMC,UFS,etc. do have transistors, where the small amount of electrical charge does slowly leak over time, resulting into data ...