Questions tagged [data]
Data are values of qualitative or quantitative variables, belonging to a set of items
33
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7
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Power for POV display
I want to build a small POV display, but how is the power (and if possible a communication line) transmitted to the spinning part?
I've looked at some POV project, but they usually don't explain that ...
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10
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3
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Data retention on a microcontroller
Just reading the datasheet of the attiny13 it says that it can hold its data for 20 years at 85 degrees Celsius and 100 years at 25 degrees Celsius.
Is this irrespective of the read and writes on ...
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4
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How could you transfer data over an audio line?
I'd like to pass some data over an audio cable (i.e from audio card to my cellphone) with a short cable.
I'm looking for some ideas for algorithms for achieving this. They of course should include ...
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10
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Why can't Wi-Fi run at 2.4 Gbit/s?
So Wi-Fi runs in the 2.4 GHz band, yeah (and the new ones 5 GHz)? Which means that every second, a Wi-Fi antenna outputs 2.4 billion square wave pulses, right?
So I was wondering, why can't ...
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11
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3
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Can the Arduino be used to "spy" on a UART connection between two devices?
I have a need to install an Arduino (actually just the IC) into existing hardware to enhance functionality.
What I would like to do is connect the Arduino so that it "spys" on the I/O lines between ...
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2
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Is there a spice directive to export waveform data in LTspice?
http://www.linear.com/solutions/1815
The above web-page explains how to export the waveform data to a text file. You basically run the LTspice simulation, clicking on the waveform window, go to ...
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4
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Will an SPI flash memory chip have the same issues with non-atomic write operations as a dsPIC's internal EEPROM?
A while back I had some intermittent trouble with the internal EEPROM of a dsPIC. Every so often, some value in the EEPROM would be found zeroed out on power-on. I tracked the problem down to when the ...
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6
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3
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Custom USB Impedance question
I'm looking at making my own USB cable for a project. The primary issue I'm having is that I'm getting a lot of capacitance in my cable between D+ and D- (400ish pF) which is enough to throw off the ...
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6
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2
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Best method for sending data over a mono audio channel
I'm looking for a way to send binary data over an audio channel on a video/audio transmitter. This will be an add-on feature to my product because it already has an audio interface. I'm hoping to be ...
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2
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5
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What solutions, if any, are there for visible light transmission (VLC)?
I want to know what ways are there to transmit data using LED's that are available to us today.
I currently can find only one reasonable resource for this topic, which is this:
http://www.siemens.com/...
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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 ...
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1
vote
1
answer
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USB Charge and data separate cables
Is it possible to split micro USB to USB cable so two cables (data + and data -) go to the PC with USB and two other power cables go to power brick?
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1
answer
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How do modern CPUs treat memory operations? [closed]
How does a modern CPU treat memory reads and writes on the hardware level?
With old 8-bit architectures all memory locations are read and written to one byte at a time, but how do modern CPUs that ...
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18
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7
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General protocol for data transfer from one system to another?
What is the general protocol to send information from one system to another? For example, let's say we have some information collected from microcontroller over a length of time that we want to send ...
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What is the theoretical maximum data transfer rate of a pair of wires in a phone cable?
Yesterday folks from my ISP came to install a 16 Mbps "Fiber to the Home" connection, but I noticed that the connection still comes in through the same two wires on our phone jack.
Could that same ...
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