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|   August 24, 2008 at 9:38 AM

Does this take miniSD cards or microSD cards (or is it both?)? I'm confused as the datasheet says miniSD but this page says microSD.

by

|   August 25, 2008 at 5:24 PM

I don't have this board, but if it is the same as the Uberboard, then its a micro SD or TransFlash card.

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|   September 13, 2008 at 8:34 AM

This is a great tool for easy data logging. Easy to use with microSD.

Please be avare that the firmware has a small mistake, but you can easily correct it by WinARM. when you would like to use all ADC lines the system will not work.
You need to change in the source:
AD0CR = 0x00020FF02; // AD0.1
AD1CR |= 0x01000000; // start conversion
to
AD0CR = 0x00020FF02; // AD0.1
AD0CR |= 0x01000000; // start conversion

because you are using the ADC0 not ADC1

Jan

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|   September 13, 2008 at 9:57 AM

downloading the firmware needs to a little change in the makefile:

change this line:
LOGOV2.FW: main.elf

to this one:
FW.SFE: main.elf

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|   September 24, 2008 at 3:48 AM

I'm trying to use the function Log_init for writing other files and it doesn't work. The file is created, but it's blank. The code I use is:
fd = root_open_new("LOGCON.txt");

strcpy(stringBuf,"the textnr");
stringSize = strlen(stringBuf);

fat16_write_file(fd, (unsigned char*)stringBuf, stringSize);

sd_raw_sync();
Thanks for some help

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|   September 25, 2008 at 1:30 PM

Wow! The popularity of this device is a pleasant surprise! To answer your questions:

jatkins: This device takes microSD cards. Don't know why I wrote miniSD, not enough coffee that day I guess. Datasheet is now up-to-date.

jan.brutovsky: Thanks for pointing those out! The link now downloads the corrected firmware, with the register change on the ADC line and the updated firmware filename.

tapenot: On the surface it appears that your code is correct. Make sure you are not naming the new file "LOGCON.txt" if the Log_init routine is also trying to manipulate it. Make sure you are properly declaring fd and stringBuf as the correct data types. If all else fails check the return values of fat16_write_file and sd_raw_sync. If either of these are failing you can debug the functions themselves. As a final test, I would recommend trying a different brand of SD card than you are using. These cards can be fickle sometimes. If you need further help, feel free to contact our tech support.

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|   October 16, 2008 at 6:49 PM

I need a simple datalogger then can record a timestamp and the id of a rfid tag using one of your rfid reader´s.
Is it possible to do that using this board?
what else do I need? tks

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|   October 18, 2008 at 2:31 PM

I would like to use the onboard RTC to maintain date-time while powered down. The schematatic shows the LPC2148's VBAT lead connected to VCC on the circuit board. I am thinking about cutting the VBAT pin and trying to solder a lead to it, allowing me to add an external battery to keep VBAT powerered 24-7.

Is there an easier/cleaner way to do this ?

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|   October 23, 2008 at 11:56 AM

I received this board in the mail yesterday and the one I received says logomatic v2 but it only has 8 digital/analog outputs and then additional outputs like ones for SCk, MISO,MOSI,CS,STOP,etc. The datasheet, however, has a different set of outputs pictured and says that there should be 10 adc outputs. I am wondering if the board I received is a newer version/older version, or whatever and if so, then is there a datasheet for this board I have.

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|   October 26, 2008 at 3:45 PM

Unit works great. However, what if I want to use it with some other boards and run it on a source OTHER than a LiPo Battery. Will this cause problems with the charging circuit? (I'd really like to be able to run it off +12V).

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|   October 30, 2008 at 2:22 PM

How long would the battery run if I were to log UART data only, continuously?

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|   October 30, 2008 at 2:32 PM

I just noticed it actually doesn't come with a battery...so the run-time will vary depending on the power source then. Any recommendations?

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|   November  3, 2008 at 10:10 AM

Guillermo Tosi: Yes, this device will record a time stamp and ID from an RFID reader. However, time stamp recording cannot be configured straight from the config file, so you will have to change the firmware to record the time stamp from the RTC along with the data from the reader.

d.headrick: What you are describing seems like the best solution to me. VBAT must be powered for the RTC to work in power-down, so cutting the trace and having a separate power would work for you.

ratlifflj: Oops! Forgot to change the diagram on the datasheet. What you have is the exact same board with UART1 pins broken out (which replace two of the ADC lines). The datasheet should be exactly the same otherwise. We'll get that changed.

Randy: You can run this board off of any power supply you like, the charge circuit is protected from the main power regulator. The datasheet recommends a maximum of about 9V supply, but the regulator on the board is pretty beefy, and I've had one of these running off of a 18V bench power supply before it horked. You will most likely be able to run it off of 12V, but I would certainly test beforehand to see how hot the regulator is getting, running it too long could put it into thermal shutdown.

dantearmando: The battery life depends on what battery you're using and the current draw of the device depends on the UART logging frequency. The maximum current draw is 80mA (as high as we've been able to get it) so if you're using a Lithium Polymer cell with a 2000mAh rating, the device should run for about 25 hours minimum. I would recommend Sparkfun product PRT-08483.

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|   November 10, 2008 at 12:36 AM

With the stock hardware/firmware, is there anything that will prevent you from draining a single-cell Lipo battery if you just leave the Logomatic on?

-Adam

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|   November 18, 2008 at 7:17 PM

Hi, I am interested in adding a time stamp to the recorded data. is there a way to modify the firm ware , etc. so that this is possible?

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|   November 18, 2008 at 7:20 PM

Also, if I do edit the firmware how do I upload it to the device? thanks

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|   November 18, 2008 at 7:27 PM

I am currently reading the bootloader tutorial. Hopefully this will answer my last question so please disregard the last post. But I would still like to know about the time stamp question

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|   November 22, 2008 at 8:54 AM

I've got the Logomatic 1.0, but my poor soldering (I'm very new to electronics) messed up the tracks, possibly permanently. For that and other reasons (e.g. microSD, smaller size, etc.) I'm probably gonna buy this board, but obviously don't want to replicate the problem I had last time -- would it be a better idea to use headers instead of directly soldering to the pin holes?

E.g. http://www.sparkfun.com/commerce/product_info.php?products_id=116

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|   November 24, 2008 at 8:50 AM

Also, does the Logomatic use 5V-TTL signals? i.e. can I connect directly to the Arduino Diecimila board (Atmega168)?

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|   November 24, 2008 at 12:30 AM

Jatkins, I'm by no means an authority on this, but I would guess that it uses a 3.3V signal since that is what the MCU operates at.

I would suggest using a header rail, it will make the board more portable from project to project and you won't have to worry about as much strain protection for the wires. If you want, use a polarized header rail and housing to prevent connecting things backward.

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|   December  9, 2008 at 2:52 AM

thanks :)

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|   November 24, 2008 at 12:32 AM

I have two of these boards and am wondering if you would explain in detail how to re-enable the 9th and 10th A2D channel. I need as many A2D ports as I can get.

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|   December  6, 2008 at 10:10 AM

I have not yet purchases this device and am a newb when it comes to electronics... can this device be attached to an analog sensor breakout board like the one for the ADXL330? Are the voltage ranges appropriate? What else would I have to think about in determining whether I could connect a given sensor? Thanks -Scott

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|   December 21, 2008 at 8:11 PM

I'm a scientist with modest electronics skills (translation: zip for programming). I've suspended using the UART functions for interfacing my MaxSonar, for reasons below, but finally have the analog working fairly well. My questions are: 1) The datasheet says the frequency for ADC will go down to 1, but I can't get it to accept data with a frequency less than 10, i.e., anything less gives empty files. This will make unacceptably large datasets for my purposes. 2) I, like other posts, would like to add a time stamp or event mark at 1 minute intervals. This sounds like firmware fiddling. 3) If I were to revert back to UART logging, how do you set the data rate (which also sounds like scary firmware stuff)?
Any help from the Ubergeek community will stop me from further baying at the moon. Thanks!

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|   January  3, 2009 at 1:44 PM

This board allows to interface somehow virtually with this I2C sensor ( Humidity and Temperature Sensor - SHT15 ), if there is no hw port enabled/free for it.
thanks
JAn

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|   January  8, 2009 at 1:25 AM

Question 1:
What voltage levels can be logged via the analog ports?

Question2:
Is it possible to programm the logger to start logging at a certain date and time?

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|   January 22, 2009 at 0:35 AM

I am interested the Logomatic for a long time period logging application, but have the following questions (some already mentioned above by others):

1. Can a timestamp be written with the data (either alongside each data set or at intervals as a marker?)

2. Can the firmware be modified to allow logging at a frequency less than 1?

3. I see there is a limit of 255 datafiles - I assume the datafiles are also a fixed size and therefore does this imply that there is a limit to the amount of data that can be stored?

Thanks.

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|   January 26, 2009 at 10:51 AM

Highlights:
-Very Small!
-Easy Size to solder
-LEDs are helpful

Not So Highlights:
-UART and ADC logging are mutually exclusive on this device.

-Poor Documentation, I still don't know how to access the second UART, or enable them for ADCs

Once I got the ADC logging I was pretty happy with the device and now its time to get to firmware hacking.

Gotchas:

-Under OS X, editing the LOGCON.txt doesn't work corrctly. Its best to use WIndoze for this operation.

- Using the LS20031 GPS module, make sure to change the Baud Rate to 7 otherwise you will get garbage.

I would like a better spec sheet for this device. It really has great potential. Also bigger power switch that you could access when placed in an enclosure.

Please for the love of Science, make a mode that allows both UART and ADC at the same time or a triggered from the UART. This is a firmware upgrade away from making alot of people happy, and the software already exists with the Package Tracker. If this is not really an option atleast let people know why.

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|   January 27, 2009 at 6:08 AM

Yeah, it would be really great to have a simple tutorial for the UART logging. I'm using it w/ the Arduino Pro Mini, and I assumed you just wire the TXO and GND on the Pro Mini to the RXIO and GND on the Logomatic, but it's not logging anything.

The code I'm using is:

void setup() {
Serial.begin(9600);
}

void loop() {
Serial.print('The quick brown fox jumps over the lazy dog');
delay(1000);
}

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|   January 27, 2009 at 1:28 PM

I've got it powered from a regulated 3.3V source, and it writes the LOGCON file correctly. The LEDs flash for a few seconds and then stop when in operation; they don't flash like it says they should in the manual.

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|   February  3, 2009 at 3:03 PM

Got it working fine now - it's working perfectly.

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|   January 31, 2009 at 5:00 AM

The device is supposed to "mount as a drive on your computer", according to the datasheet. I have never been able to get it to do that.

On a Vista computer I get the "USB Device Not Recognized", and when I click through, a list referring to it as "Unknown Device" and saying that there is no device driver loaded.

On an XP computer I get no sign of recognition that the device is plugged in at all.

I can remove the SD card and read it in a Sparkfun card reader, and it does seem to mostly do what is expected, except that the first log file is named "LOF01", not "LOG01" (subsequent log files are named correctly).

I also have a Logomatic V1, and I have had no trouble using that.

Any ideas on how to get the V2 to mount properly? Is there driver software somewhere?

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|   January 20, 2010 at 4:39 PM

I'm not sure if you're still having this problem. I noticed it as well. You have to have the device off before you connect it to the PC and turn it on after you connect it. I think there has to be some process during power up that allows it to mount to your computer instead of logging when it recognizes a USB connection. I could be wrong. Pure speculation. All I know is when I left it on and connected it it said "device not recognized" just like you.

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|   February 26, 2009 at 1:07 PM

Is there a way to get the log files converted to KMZ google earth without too much fuzz?

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|   February 26, 2009 at 1:33 PM

Checkout GPS Babel, nice little program should do what you want.

http://www.gpsbabel.org/

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|   March  7, 2009 at 10:46 AM

I have an LOCOSYS LS20033 GPS:
http://www.dpcav.com/data_sheets/ls2003x_gps.pdf

the gps is connected to an OSD:
http://alai.h3m.com/~s0350672/catalogo/product_info.php?cPath=43_63&products_id=361&osCsid=e38ab9eef4dbdb15dc8b9da231f45334

the OSD controlls the gps. All I want the logger to do, is to receive data from the gps. I tried connecting the GND and Data output (TTL level) on the gps and GND and D/A 1 on the logger. Is this wrong? Thanks.

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|   March  3, 2009 at 5:02 PM

My board was working, but now only shows both LED's full on, no files written and the plug in removable hard drive function doesn't show any files on the card, even though you can see them if you put it into a PC by itself. Conclusion? The firmware may have gotten scrambled.

Is there a hex file / compiled firmware file that I can upload using the Flash Magic utility? I don't want to get all the tools up and running to recompile...

Thanks...

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|   March 19, 2009 at 7:14 PM

Cool! I'm going to actually modify and then re-layout the board and make it myself, but is that big ol' ARM7 really necessary? Wouldn't a little 8-bit controller like an atmega8 or something work fine?

I want to make this as bare-bones and as cheap as possible.

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|   March 20, 2009 at 8:43 AM

The logomatic implements the USB stack and a FAT16 library. It's pretty easy to do this stuff on an ARM, which is why we did it this way. Good luck with an 8 bit micro though, that would be great! (and cheap too!)

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|   April 11, 2009 at 6:40 PM

Ah. It took me a while to read your reply. I haven't worked at making an 8-bit sd datalogger, though, but I'm gonna try.

I do want to look into arm programming, though. It would be nice to do some heavy-duty stuff with microcontroller programming. It's awesome what you guys do here.

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|   March 25, 2009 at 12:54 AM

What is the max data rate that can be written to the SD card?
I realize that would depend on the speed of the card, but do you have any data for different speed cards and the associated data through put?

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|   April 24, 2009 at 1:28 PM

I've found and fixed a couple of bugs in the section of main.c that writes ASCII values of the ADC readings to the log file; is there a good place to post them, rather than pasting a large code fragment here?

Does SparkFun use any kind of source-code management (CVS, Subversion etc)? It'd be particularly useful for people to share code improvements while keeping track of different versions.

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|   April 24, 2009 at 2:47 PM

Awesome question. Thank you for the help! We don't have a good forward-facing CVS system yet. In the mean time, please send us your version of the firmware (and we will add it), or link to your firmware here in comments.

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|   April 24, 2009 at 11:36 PM

The formatting gets too badly messed up to post a diff file here, and I don't have an upload site to post on easily. I could email the diff or the main.c to you -- what email address should I use? In return, can I get the version of the KinetaMap firmwareV1.1 which Francesco Ruta based V1.1.2 on, so I can do a diff and merge into V1.2?

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|   May 11, 2009 at 7:01 AM

ascii log file analog signal order:
ch8 ch1 ch2 ch3 ch4 ch5 ch6 ch7
AD1.3 AD0.3 AD0.2 AD0.1 AD0.4 AD1.7 AD1.6 AD1.2

so channel 8 comes first in the log file,
and ch 8 comes last on the board takes a few minutes to figure out, why not just use same order :-)
and wierd naming in the configure file, why not
name them 1-8 like on the bords, normal userd
dont want to be bothered with the wierd arm analog naming
AD1.3 for channel 8 = too complex

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|   May 19, 2009 at 0:21 AM

Thomas,

I totally agree with you -- the Logomatic's numbering of the AD channels in both the config file and the log files makes no sense at all; maybe it's a hold-over from the earlier version of the board.

I modified the code so that, if the text in the config file is "CH1 = Y", "CH2 = N" etc, it correctly maps them with the numbering on the board, and outputs them in the log file in that order. I can post my changes to the Forum if you're interested. I wish there was a good repository where we users could post code improvements and bug fixes. Somebody (I don't have the link on me right now) did a great job cleaning and speeding up the code, so it can sample and log at a much higher rate than the SparkFun code. We need a code repository!!

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|   May 12, 2009 at 1:46 AM

ADC ascii writes over long time = bugs..
I started a 6ch adc ascii loging, 100hz
with the supplied micro SD card 1GB from sparkfun,
after 6-8hrs I get some wierd logs like missing
data, look here:

505 231 196 233 305 338
505 232 197 232 302 339
305 339 (here data is missing)
505 232 195 233 308 340
505 231 194 232 308 339
505 232 196 233 307 343
504 231 196 233 197 232 301 338 (n1)
505 231 197 232 303 338

n1 = here too much data placed on the same line ??
any one with a fix for this ?
I dont want to write C code or compile,
I prefer to get a fixed HEX code I cam upgrade my
units with, is that possible ?
any users with fix hex codes please email me thomas at webx dot dk, thanks in advance

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|   May 19, 2009 at 3:17 PM

Please make a proper data sheet for this device. It should include maximum and minimum voltages for Vin, Rx,the analog channels, and basically every other pins on the board.

Somewhere you should also spec out exactly what connector that is for the battery.

The switch that connects and disconnects the battery has 6 terminals on it, while the schematic only shows 3.

I need this info because I need to power it with an unconventional battery, and I need to pull off all the switches from the board and mount them externally. This information would have made my life a lot easier.

Other than that...well yay! Very good device.

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|   May 21, 2009 at 5:46 PM

Has anybody read the BATTLVL value from AD1.4? I modified my code to read this, based on the schematic showing a straight voltage divider, and also on the code used in the KinetaMap, but I'm getting strange readings. The values don't seem to work out, although they certainly go up if I turn up the voltage on my supply. I'd expect them to max out (at 1023) for 6.6V (2 x VREF), but at 7V I read 962.

by

|   May 26, 2009 at 9:28 AM

One more thing. Mechanical drawings of the board....other than eagle files. Would be nice. Something that pin points the location of the LEDs

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|   June  4, 2009 at 7:42 AM

You note 80 mA as it's worst case current draw but I seem to be getting it constantly. Is there anything I can do or hack away at the firmware to try and minimize this as much as possible? It's using UART.

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|   June  5, 2009 at 9:29 AM

Minor gripe:

Still think the data sheet should be more technical. Here is another example of why.

There should be a spec on what error tolerance the device has on baud rate. I found the with my chip, at my speed, the error for generating a baud rate of 155200 is 3.7%. This made it so that it worked fine when sending text to a PC or most other devices. But apparently the logomatic can not handle this amount of error.

Moving to 57600 bps, fixed everything.

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|   June 18, 2009 at 2:00 AM

Why is it that sometimes the data records properly and other time it is all garble? I have checked the input and that is always the same.

I get good data as follows:

95FF 1307 D008 FC20 2837 C020 B120 951F A708 FC0B C6F7 C0FA 1460 2008 FC20 9F1B 8920 95FF 1307

And bad data as follows:

3F3F 3F3F 3F3F 3F49 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F 3F3F

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|   June 30, 2009 at 3:15 PM

This board seems to be intended for continuous data logging. I plan to use it somewhat differently.

- I need to log data at time instances triggered by an external device or a switch.
- I need to log data coming from two serial devices, at the same instant. Both devices are capable of generating serial data with different trigger characters.

I studied the available docs and could not find an easy solution yet. I would appreciate any comments/suggestions.

Thanks in advance...

by

|   July  6, 2009 at 11:46 AM

This seemed like the perfect device to do a simple pressure and temperature logging project. And, it probably is. The problem I've found is that there isn't much community support to get you past problems. As far as help goes, you're pretty much limited to the forum on this site and a good many of the posts there go unanswered.

But then, I've probably just been spoiled by the amount of help available for Arduino projects.

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|   July 31, 2009 at 8:38 AM

I've managed to get this to log something from the ADC inputs but nothing from the serial (which is what I'm trying to do). jatkins asked if this input can accept TTL level signals and I don't see an answer...

I'm trying to log the serial output from the hardware uart on a 5v Arduino Pro Mini 328.

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|   August  5, 2009 at 5:38 PM

I have created a binary to CSV file converter program. It is for the main firmware that comes with the Logomatic when you are using the binary ADC mode.
http://www.prism.gatech.edu/~jsheridan3/logomaticBinaryConverter/

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|   August 10, 2009 at 12:03 AM

am also looking for a statement of whether you can simply connect the Arduino's pins to the TX/RX lines....

am using the Deucimilia board / ATMega328 chip.

thanks!

by

|   October 15, 2009 at 11:29 AM

Yes you can just connect the TX/RX from your Arduino to the logomatic. (I've done it) make sure the logomatic is grounded to the micro controller.

by

|   October 15, 2009 at 5:09 PM

I have not ordered the logomatic yet (it is in my cart, I like to receive everything at once), but I already started my own version of the code for a project of mine.

Your bootloader seems really cool - maybe I will just not need to port the one I wrote for the LH79520 (that was an ARM720T core).

Thanks for the tutorials: I got the environment up and running in about 4 minutes and I am already building the core of the OS I want for my application.
Great!
The ARM7TDMI cranking power might be a little short compared to a BF533 but then, well... If I really need it I could also wrap up my own board.

Speaking of which, it appears that the Eagle files you provide on this page do not correspond to the pictures of the board on that same page.

by

|   October 15, 2009 at 5:10 PM

I am not referring to the pads and vias that get connected through plane filling (I guess this gets done automatically upon generation of the Gerber files) but the shape of some traces has changed, and the .brd file bears the date of the version on the bottom layer. Are these the only changes? (in addition to silkscreen modifications)
Has there been substancial changes?

Also, a small remark for future revisions of the board or other similar PCB: I would have liked if the unused pins were at least pulled to vias, even very close to the chip; even under the chip for that matter.
For instance the LPC2148 features 14 ADC channels (6 muxed on ADC0 and 8 on ADC1) - I would have had a use for all 14, had they been available other than by soldering directly on the pins (and I don't have a microscope here).
Great little chip, in any case.

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|   October 15, 2009 at 5:11 PM

Has anyone used UART0 for communication?
I guess it is available when user code is running, right?

Similarly I guess the UART1 (TXO1 and RXI1) and the SPI (SCK, MOSI, MISO and CS) are available as GPIO when not used otherwise, right?

Thanks for posting the design files!

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|   October 16, 2009 at 7:38 PM

Would it be possible to buy this in kit, i.e. all the components necessary but not soldered onto the PCB?

I need to combine this PCB with other components and stuff on a PCB with the USB connector and the card on the side - I can make my own PCB but then I would like to avoid the hassle of procuring all the components.

Thanks for answering this.

by

|   October 24, 2009 at 2:31 AM

Hello,

Can I power the logomatic directly with 3.3V or must I use the VLipo pins with a highest voltage as 5V?

Thank you

Seb

by

|   November  4, 2009 at 5:30 PM

I have just purchased the V2 and was very excited about it's prospects. However my preliminary testing is turning out to be frustrating. For testing I have connected my Garmin 2 plus to the UART0 connectors ('5' in fig 1 of the overview page)and I am connected using Gdn and RXI0. My Garmin is set to NMEA/NMEA 4800 Baud NMEA 0183 vers 2.0. I have set LOGCON.txt to Mode 0 and tried baud rates of 4800, 9600 and even 2400 and whilst the unit sets up the files and the LED's tell me they are buffering and downloading to the SD card, all I am getting is "gobblygook" in teh txt files. With a trigger of "$" I get no records at all in mode 1.
I thought it was going to be a lot simpler than this. Can you please assist?

by

|   December 14, 2009 at 7:13 PM

You might want to make sure your garmin is in the right mode once you power it back up again, Also you made no mention of voltage levels, make sure these are all in-spec.

A good way to test is with a USB to serial(TTL)converter. Hook the garmin to the RX and make sure it's coming in at that baud-rate. Then hook the logomatic RX to the converters TX and send a few "@" signs and see if they get recorded.

I have a V1 logomatic and blind experimentation is a bit frustrating. always try to verify what's really being sent to it!

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|   January  1, 2010 at 4:09 PM

Powerful little board!

I had to read the source to figure out which of the UARTs to use. Unless I missed it, the datasheet does not explicitly tell you to use the UART0 pins. My first guess was that that was reserved for debug and ISP programming.

Let me add my vote for new hardware features:
RTC Vbatt pad option
more pads for currently unused pins if there is room

On the software side, mixed UART and ADC (I know, just a few lines of code I could do myself...) and RTC support.

by

|   January 22, 2010 at 1:45 PM

Hi,

Seems real great.
Will it work with micro SD HC cards?

Thanks,
Wan

by

|   February  1, 2010 at 2:35 AM

We'd like to use the logger v2 as a real time logger. Is it possible to access the log data from a PC via the USB port while the logger is running?

by

|   February  1, 2010 at 11:39 AM

I guess some folks have already modified the firmware
for their own particular needs. I would like to know which IDE/compiler they used. I currently have the Keil uVision 4. Has anyone used this for the firmware mods?

Regards.

by

|   February  1, 2010 at 2:22 PM

What I meant to say was use the logger as a real time A/D reading the data live via the USB port on a PC. Or alternatively through the serial port. We fly a PC104 form factor on our platform - our main computer - but would like to use the logger as an A/D acquisition device feeding data to our PC which is telemetered to the ground.