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0answers
16 views

Reading of data from USB2LPT cable IEEE 1284 controller

From PIC controller, I want to read parallel port data using this USB2LPT converter cable. At every print from PC, I just receive 0x1B, and then printing stops. I am using ...
1
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0answers
72 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
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2answers
80 views

Continuously log data from an oscilloscope

I have a pin which is being toggled every 100ms by an MCU. I need to plot a graph which consists of the variation from the desired interval . That is the number of times it moved away and was toggled ...
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2answers
65 views

Is it safe to not power this USB to I2C chip when USB isn't plugged in?

I am working with someone on a data logger based on an MSP430. Since it operates on battery power, we want the device to use as little power as possible. We are planning to use this chip (FT201X) to ...
4
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1answer
312 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 ...
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2answers
96 views

Collecting data from GSM devices

this is my first question on electronics, so I hope I will get it right. :) GSM and GPS are topics which are quite new to me, but I will try to be as clear as I can. Is it possible to collect data ...
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0answers
186 views

How to create a Modbus interface to Agilent DAQ?

I'm given the task to program a Modbus interface to Agilent 34972A DAQ. I'm completely new to Modbus and Agilent, but I've created a simple Delphi program that capture TTL digital outputs from ...
1
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1answer
63 views

Arduino data processing [closed]

I am currently looking into using the Arduino micro controller for data processing. I thought a good way for me to get practical experience and learn is make a sample application like a key logger - ...
2
votes
1answer
69 views

Hooking up a load cell to a temperature logger

I have an idea for little project where I want to log weight changes (standalone) on a bee hive, preferably low-cost. Now there's a lot of cheap temperature loggers on the market, for example this ...
2
votes
1answer
160 views

How do you correlate voltage output with these values that I have collected?

I'm using a "Logomatic v2 Serial SD Datalogger" to measure the voltage output of this piezo-resistive sensor, "Force Sensitive Resistor - Square." The values are logged in a .txt file in a microSD. (I ...
2
votes
1answer
191 views

PIC : Reading and Writing to External Flash M25PE80 using pic18f67k22 controller

I have PIC18F67K22 controller. I am making data logging system. I am using M25PE80 external flash for storing data. I am storing session wise data in external flash. Also I am storing start and stop ...
0
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1answer
84 views

need a 3-channel data logger [duplicate]

The second link shown below leads to the schematic for measuring the position of a laser beam by using Quadrant PSD(Pg.No 45). I am trying to build a similar circuit. The datasheet of the quadrant ...
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1answer
167 views

How to search date wise in flash memory using microcontroller?

I am developing a data logger in which I am using 8 MB of flash memory to store the sensor data with date and time. I am using RF interface to transfer that data to PC. I am planning to have PC ...
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0answers
149 views

Communicating an Arduino with a Data logger

I need to communicate a Sharp Dust sensor to a Data logger for a weather station project. It was straight forward to communicate other sensors (wind, temperature) as they were ready calibrated from ...
3
votes
2answers
231 views

PIC Microchip interface with PC

I have been using USART for interfacing PICs to my PC for datalogging. The problem is that now serial ports are not very common and often you need a USB-Serial adapters which do not always work or ...
1
vote
2answers
235 views

Logging the output from a solar cell

I am trying to create a small low cost circuit that will allow me to log the output of a solar cell over the course of a month as a student project. Currently I have a 5V Silicon PV cell and am ...
1
vote
3answers
115 views

Embedded system-current draw logging

I have an embedded application that wakes up every 15 minutes and performs some specific function for a period of two minutes. I need to log the current consumption of this specific function on the ...
4
votes
1answer
910 views

Corrupted files generated by Arduino with SD library. How to avoid that?

I have a sketch that runs on an Arduino Ethernet (that comes with an SD card reader and, of course, an Ethernet interface). There is a unique place in this sketch where I write to a file on the SD ...
2
votes
1answer
196 views

Intersection Turning Movement counts

Civil Traffic Engineers have a perpetual data gathering problem. They need intersection turning movement counts to do their studies. This has historically been a manual task. Someone sits by the ...
1
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2answers
194 views

Fast sensor readings

I am developing a data logger for use in high schools like ( http://www.pasco.com ). The main difference is that mine is primary supposed to be used with an iPad. I have a connection between a micro ...
13
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2answers
3k views

Low power micro-SD card storage

We are building a low-power data logger based upon the ATmega328P, in order to make use of the Arduino boot loader and IDE, etc. Ideally power consumption should be less than 0.3mA @ 3.3V to get ...
5
votes
3answers
379 views

Sync video with data

When I have a datalogger and I want to sync a video-file to the recording, what would be an easy method? The logger and the camera both have an internal clock, but they may not be set exactly to the ...
0
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3answers
518 views

What's a good sensor for measuring high voltages

I want to do datalogging on solar strings in the 600V range +-100V. Would prefer accuracy close to 1%.
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1answer
898 views

How to monitor / log / record / store voltage reading across various connectors of a PC power supply unit ( PSU )

I'm searching for a way to detect over-/undervoltages across the PSU connectors so that i can have a better chance of finding causes for HW failures/errors . Best way i could think of was logging the ...
2
votes
2answers
126 views

Monitoring software for embedded application

I'm looking for a Windows application to collect data to a host PC from an embedded application (PIC microcontroller). The communication between host and embedded application is via Ethernet. It ...
4
votes
1answer
163 views

How to sync sensor data

Suppose I have multiple dataloggers receiving sensor data, how can I sync those signals afterwards? The most obvious way would be adding timestamps to the data, but they have independant clocks, so I ...
3
votes
2answers
406 views

Can USB host controllers be used for device identification?

Does any USB host device provides any unique IDs which are available from USB controller to device? At software side, I can get the vendor ID (along with other hardware identification data such as ...
3
votes
3answers
150 views

Can I log current using a voltage input and V=IR

I have a sensor which produces a current proportional to the variable it is sensing. My data logger only accepts input as a varying voltage, which it then encodes in 8 bits (scaled linearly to volts). ...
4
votes
6answers
1k views

Temperature logging setup for refrigerator

I've been having some issues with my refrigerator lately, and so I've been imagining some kind of temperature logging system. I want it to log the temperature every 5(?) seconds, door open/close ...
2
votes
4answers
2k views

Hackable exercise bicycle computer?

This might sound a bit weird, but does anybody here know of a exercise bicycle that is hackable? What I would like to do is to connect it to a PC (don't care how, usb, parallel port, serial...) to ...
3
votes
3answers
737 views

Logomatic v2 serial SD Datalogger issues

Hi i bought this data logger a few weeks ago, http://www.littlebirdelectronics.com/products/Logomatic-v2-Serial-SD-Datalogger.html I've been having some trouble with it. I read the data sheet and ...
3
votes
2answers
1k views

AVR Stick Data Logger Usage

Has anyone used this data logger (or similar) with v-usb to collect data? http://www.sparkfun.com/commerce/product_info.php?products_id=9147 If so, what is the maximum times per second voltage data ...