Exchange of information between devices. Communication can be wired or wireless.

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0
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4answers
53 views

Realizing a tcp/ip communication between an embedded device and PC using C#

I want to realize a tcp/ip communication between an embedded device (STM32, arduino+ethernet shield,Raspberry PI or beaglebone) with my PC using C# on the PC side I want to command the device with a ...
-3
votes
0answers
24 views

CSR8645 communication via SPI and Uart [on hold]

heloo I have CSR8645 module, but i can't find any documentation about communication with this chip. I like to setup this module, setup i2s lines. Could I ask for some document, with explain how to ...
0
votes
3answers
44 views

How does async data transmission actually work?

I think I understand synchronised data transmission between A and B. They share a synchronised clock signal that indicates when the transmitter is sending a bit and the receiver should read the value. ...
-1
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1answer
35 views

How is data transmitted on different media?

Thinking about computers primarily, I'm trying to get my head around how data is transmitted along various transmission media. In particular, I'm getting confused between the use of electromagnetic ...
0
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0answers
31 views

Typical 3g power consumption

What is a typical power consumption of a relatively low power embedded 3g modem (for IOT) during communication?
0
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3answers
43 views

Is it possible to directly interface a MEMS ADMP541 microphone over I2S with any Microcontroller?

I have bought a MEMS ADMP541 Evalution kit to record voice samples with arduino controller MEMS microphone will produce digital o/p , I2S communication protocal My question is should I directly ...
0
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1answer
22 views

Documentation on the relationship between computer networking and digital communication [on hold]

Please can someone relate the relationship between computer networking and digital communication and any relationship to electrical or electronics world
-4
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0answers
24 views

How to set 2 communication cells with the same frequencys near some [closed]

How to set 2 communication cells with the same frequencys near some ?
2
votes
1answer
156 views

RX/TX LED for MAX232

I want to use two LEDs to show send and receive on my max232 RS232 to TTL (5v) converter. I have seen this method as the most conventional way to power an LED for max232: I tested it and the LED ...
-3
votes
1answer
57 views

Convert USB3 to WIFI [closed]

What methods could be used to convert USB3 communication to WiFi, when there is no access to the device's OS?
0
votes
1answer
47 views

Generating Sync Signals [closed]

Normally any sort of video signal received by means of RF,contains a Hsync and Vsync component for instructing the electron beam.My question is ,how does the television do this using external sync ...
-1
votes
1answer
61 views

Clock and data vs rx and tx communication

I'm working on a project in which I have to make two pic10f200 microcontrollers communicate via serial communication lines. I know that with Arduino you interconnect the two board's rx and tx lines, ...
0
votes
5answers
81 views

Will the data throughput decrease if the transmitter and receiver are in motion?

What I'm thinking of is a 2 way communication (voice communication) between two systems which are in motion. (like 100 km/h difference) Will the data transmission and reception be disturbed, by how ...
1
vote
0answers
25 views

Compressed single-sideband modulation?

I've had an idea for a new form of SSB modulation, using half-angle formulas as a basis for compressing the sideband of a SSB voice transmission. However, this idea seems so simple that I feel it must ...
1
vote
1answer
35 views

Bessel Differential Equation and Angle Modulation

I'm trying to undestand the role of the Bessel differential equation in calculating the side bands of a phase modulated signal. I started out with the textbook example $$u_{PM} = cos(w_C \cdot t + ...
-1
votes
1answer
34 views

Why TMSI is required when we have IMSI?

In several 3gpp documentation pages, it is mentioned that we use TMSI in every sim cards to identify the user in a local network. But my questions is that if we have IMSI, then why they need TMSI for ...
1
vote
3answers
65 views

Lightweight point to point communication protocols

I'm working on designing a point to point communications link for a cubesat. I just want to confirm some of my understanding. In my opinion it is only necessary to have physical layer and data link ...
0
votes
2answers
53 views

Convert TTL levels to RS232 of FTDI USB<->Serial

Have this small interface FTDI FT232RL to connect a Serial device to the computer via USB. It has been working well for most of my Serial applications, except today when I tried to use it for a ...
1
vote
0answers
52 views

Computing the received signal

My question may seem a little bit easy but I'm new to these concepts and was hoping if you could help me clarify them by answering my questions. The received signal at the detector writes: $$ y = h x ...
0
votes
3answers
105 views

Wireless Communication between microcontroller and PC

I have a FRDM K64f board that is using the nRF24L01+ as it's wireless transceiver. I want to communicate between the K64f board and my PC locally. I am struggling to find the hardware needed on my ...
1
vote
2answers
248 views

Wireless Communication between cellphones

Hypothetically, is it possible to transfer data from 2 devices using a 4g network that's not from their service provider. OR in other words: Could one device download the data from the provider and ...
3
votes
3answers
82 views

How can I wirelessly deliver ~30B of data to ~10 peripherals roughly every 50ms?

I am thinking of a system where 10 or so peripherals need to receive 30-50B of data every 50-ish milliseconds (each peripheral gets unique data). The total throughput required might not be huge ...
1
vote
1answer
35 views

GSM/GPRS reach for Class 4 2W 900MHz/ Class 1 1W 1800Mhz

I'm studying differents GSM/GPRS modules and all of them have two operation modes depending the frecuency (900MHz and 1800Mhz). If I'm not wrong, for the same power higher frecuencies have a lower ...
0
votes
1answer
34 views

Texas instruments C1101 RF1100 module Schematics

does anyone got schematic from this module. I tried searching around but didn't get anything except main header pin-out. There are also 2x2 pin on each corner, but there is no info about them.
1
vote
4answers
303 views

Minimum and Maximum temperature for a copper wire to work?

Is there a minimum and maximum temperature that a copper wire/s will still work on. Meaning that current will still be able to go through them. Let's say that I have battery that is heated or cooled ...
-2
votes
1answer
63 views

What happens to a Sine wave in the frequency domain?

Say for eg.if we have a sinusoidal signal of f = 1KHZ, VPP = 1V and Voffset = 0V If I change my Offset Voltage from 0v to +5 V, What would be the effects in Time domain and frequency domain?
0
votes
1answer
56 views

RS232/RS485 Converter Circuit Receiving Problem

I'm trying to make an RS232/RS485 converter circuit. I used a circuit from http://airborn.com.au/layout/232cnv/232to485.html site and i changed some components on that circuit. Then I established my ...
1
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3answers
55 views

Magnetic modulation/ induction

I've been looking for a viable means of communication under water (other than sonars), be it short or mid-ranged, and I have come across MM and MI. I am no engineer, so I need help with this, and I ...
-2
votes
1answer
41 views

Data speed (fps) significantly decreased on USB camera [closed]

I have a 5 meter long inspection camera bought on ebay (here), getting 30 fps @ 640x480. I was measuring the resistance between D+ and D- while connected (DP, DM in the actual image), just for fun, ...
2
votes
1answer
38 views

Best method of packet transmission between an array of sensor nodes?

Currently I'm working on a project where I'll have an array of four sensor nodes, each with three sensors. These sensor nodes need to send their data back to an ATMega controlled board for processing, ...
0
votes
1answer
46 views

Sending serial signal of HT12A encoder by wire over 25 meters distance

This question has been asked many times, but I couldn't find something regarding sending out serial binary pulses from HT12A encoder over long distance. The wire will be running beside of AC 220v ...
-7
votes
1answer
78 views

How to design a band-pass filter with 2.4GHz center frequency? [closed]

my graduation project is "study and design of a band-pass filter" with center frequency 2.4GHz , i want to know how to design its cct. and which concepts i have to follow to determine the values of ...
9
votes
4answers
1k views

Why the integral is zero

I wonder why under assumption that \$\omega \gg \frac{1}{T}\$ then \$\int_{0}^{T} \sin(\omega t)dt \approx 0\$? Since the integral should be like \$\frac{\cos(\omega t)}{w}\$ from \$0\$ to \$T\$ and ...
0
votes
0answers
66 views

433MHz rf links communication PWM signals

I am researching to build a transmitter and a receiver which you normally use to fly a RC plane or drive a RC car. I am trying to control the speed and direction of a DC motor. I need a PWM signal to ...
1
vote
0answers
33 views

What is Virtual Array Antenna?

What is virtual array antenna (VAA)? I have searched it everywhere but i was unable to find direct answer to this question. I know this concept was built from phased array antenna. Please explain ...
0
votes
0answers
36 views

Communication microcontroller - VFD module (FUTABA GP1184A01A)

I'm stuck here, let's see if hopefully somebody can throw a bit of light here. I'm trying to communicate with a FUTABA GP1184A01A VFD module ([See here][1]) using an Arduino Uno via serial, 38400 ...
1
vote
0answers
50 views

Using onboard FTDI Chip on the Digilent Nexys4 to access internal VHDL signals and do a read/write via a GUI on PC

I'm new to to not only FPGAs but also to digital electronics in general, but I recently came to know that understanding and programming digital circuits is not very hard either. So, please feel free ...
0
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0answers
47 views

How to communicate my location using very low power generated using my piezoelectric material?

I have been able to charge a super capacitor of 0.1f upto 3.5V by embedding it in my shoes using some piezoelectric stacks, and now I want to use the capacitor for some emergency condition. I want to ...
24
votes
8answers
2k views

When should one switch from ASCII to advanced serial protocols?

All my microcontroller devices that communicate with the PC via UART use ASCII strings for sending commands and receiving data (as implemented in Arduino). That's what I learned when I began digging ...
0
votes
0answers
29 views

What is the difference between polar and bipolar line codings?

In a book I found that in polar line coding the interval is (-A/2---+A/2) and in bipolar it is (-A---+A). Is it correct or polar and bipolar are just same?
3
votes
1answer
81 views

Arduino 2.5mm port serial TX RX

I am connecting a 2.5mm TRS jack to an Arduino Mega to monitor for data from a remote. The remote conforms to LANC standard, viewable here: http://www.boehmel.de/lanc.htm So in short, the Tip is ...
0
votes
0answers
42 views

Any way to insert a data signal on a power bus?

I have a string of battery cells all connected in series. I need a device on each one that can communicate to the next one in the series. Traditionally I've seen this done with a separate DI and DO ...
2
votes
2answers
262 views

Sending smtp email from microcontroller

This may not be in the right location, so tell me and I'll move it. I am a recent EE grad and I was hired to build a system that exists on a SoC with a simple 32-bit processor. The system basically ...
1
vote
0answers
61 views

How to reduce SPI bit errors between a Bus Pirate and a BIOS chip?

I need to eliminate bit errors when reading a BIOS chip using a Bus Pirate v3.6. The BIOS chip is still soldered onto the motherboard. I'm using a Bus Pirate probe set to connect the Bus Pirate to a ...
1
vote
4answers
219 views

Has fsk over wired communication channels ever been done?

I have done multiple searches to figure out if fsk encoding of binary data has ever been used in a "wired" communication scheme but have come up with very little. It seems, at least to me, that ...
1
vote
1answer
60 views

How does modulation technique affect channel capacity?

Shannon's channel capacity formula does not consider modulation techniques. How then does LTE achieve high data rate using advanced modulation techniques? P.S: I am novice in RF and signal ...
1
vote
2answers
54 views

Can I use a CAN-bus for acquiring data.

I am trying to develop a robotic system that has a distributed DAQ system with one main computer that has the high level control loop. I have a question about the data that has to be transmitted ...
-2
votes
1answer
91 views

How to calculate R and C for AM Demodulation envelope detection?

How can I calculate the value of \$R\$ and \$C\$ for an AM envelope detection circuit. Knowing that the carrier wave is \$20\mathrm{KHz}\$, \$1\mathrm{Vpp}\$ sine wave, and the message signal is a ...
0
votes
2answers
34 views

CDMA modulation syncronization

Related: How in CDMA mobiles receiver gets unique code to decode its respective signal? This question says that a cdma "channel" has a publicly known code associated with it. Ok. But, how is this ...
1
vote
2answers
44 views

Data rate vs. data volume

I'm a little confused by the two terms. What do data rate and data volume mean and what are the differences?