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1
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2answers
75 views

Mass Storage for Embedded Applications

What are my options if I need to deal with relatively large amounts of data on an embedded processor? I've found storage around ~2-4GB with an SPI controller, but I'm thinking about something in the ...
3
votes
1answer
42 views

Finding the maximum storage of a CD from measurements of pits and lands?

Full disclosure: This is schoolwork. I'm not asking for anyone to solve this for me, I am only asking if I'm on the right track with my thinking. I have imagery of a CD from an atomic force ...
0
votes
2answers
81 views

DMM Hack to Log Amps: [closed]

I have a spare DMM (Digital MultiMeter) that I would like to use to log the displayed data at 1 sample/sec. What would be the least expensive way to mod the DMM to log the data that appears on the ...
1
vote
0answers
61 views

Crypto key handling in a uC

What are the general guidelines for handling a cryptographic keys? I know that saving them in plaintext is generally frowned upon, does this hold for true uCs where no user code is run?
-2
votes
2answers
61 views

Non-volatile storage system made up of logic gates [duplicate]

So, I don't want all my data blown away every time I turn off my system, so how would I create a storage system that doesn't use batteries but also keeps the data that I have stored?
0
votes
1answer
53 views

Can we know the limit of the number of times information can be stored/retrieved in computer chips - hard disks and RAM?

I was wondering whether the memory storage of a single memory area in computer semiconductors is limited in terms of the number of times it can be used. I'm also wondering what will happen to the data ...
0
votes
0answers
51 views

Unknown voltage oscillations in sensor data acquired by NI 9234 DAq module.

I am using a National Instruments 9234 Data Acquisition module for the measurement of voltage across my pressure sensor which is used to sense the pressure on it by measuring the voltage across it. ...
3
votes
1answer
210 views

How to capture values displayed on 16x2 LCD

I have an inexpensive in-line DC Wattmeter that I often use to measure yield from Solar Panels / Modules and other energy sources with reasonable accuracy and resolution. It has a 16x2 LCD display ...
2
votes
1answer
135 views

How to store more waveform after trigger and less before?

I have a Rigol DS1074Z and can't figure out how to lower the time the scope spends pre-sampling to open up more memory for the actual data I want to see. Here is a nice image that will hopefully ...
5
votes
1answer
802 views

SD card access slows down with many files

I'm working on a data logger application using a MSP430F5529 running at 2 MHz and a SD card using FatFs. The SPI interface is already running at maximum frequency. However I am seeing very erratic ...
0
votes
1answer
90 views

What's the best storage method? [closed]

I was wondering about what's the best storage method to save files to in order to save it from natural dynamics like earthquakes, tsunamis, or just to keep them along times... We all know that there ...
-4
votes
1answer
126 views

Is it possible to store data in molecules? [closed]

Is it possible to store data in charged molecules? If so, how? If not, why not?
-1
votes
1answer
161 views

Easiest & cheapest way to use embedded filesystem on SD card [closed]

I want to build a cheap, basic project which logs data to an SD card that can be removed and read using a normal card reader in a computer. Requirements are fairly basic so performance is not ...
5
votes
2answers
244 views

Is there any possibility of dissecting a microchip to get data from its internal memory?

There are many devices that perform various cryptographic operations inside their microchips. One of their key feature is that the secret keys are stored inside of the hardware and never leave it. ...
2
votes
4answers
227 views

Data compression for large amount of binary data

In an embedded application of mine, the device generates a large amount of instrumentation data that is stored every few minutes in an NVM, such as a set of EEPROMs or a Data Flash. This data is ...
4
votes
2answers
571 views

Reliable secondary storage for Raspberry Pi (or other such single-board computers (SBCs))?

Most SD cards have a fairly limited life (as in maximum number of read-write cycles), and in spite of wear-levelling, for relatively frequent disk update applications, would probably fail in a year or ...
1
vote
3answers
547 views

Why are some mp3 players so expensive?

I have noticed that mp3 players around the 32Gb area seem to be fairly expensive; I haven't seen any for less than £150. Conversely, players with smaller storage can be found at a much lower price, ...
3
votes
6answers
216 views

Hard drive that has the ability to “read” old data while it performs a write?

Is there a hard drive (protocol command, specific model, etc.) that, while writing new data over old data, it "read"/return the old data back to the controller/OS? (Analogous to a simultaneous ...
1
vote
1answer
166 views

Why is it that disk storage has increased exponentially over the years, while disk access times barely improved?

If you look at how much we are able to store on our disks these days, you'd be appalled to notice that the time required to access information from the disks have grown very insignificantly compared ...
2
votes
8answers
4k views

Is it possible to build homemade storage device?

From what i know, HDD is built on magnetic recording technology. My question is, is it possible to create a storage device from scratch (USB, HDD, etc.)? I'm just eager to try out building some ...