New library: touchatag RFID readers on Processing

Re: New library: touchatag RFID readers on Processing

2 years ago

Can I have some test subjects for the Mac version of this library? :)

To install it just drop it in the normal Processing/libraries folder. Additionally, move both libnfc.0.dylib and libusb-0.1.4.dylib to /usr/local/lib

The library is available here: http://www.mysecondplace.org/wp-content/touchatag.zip

(You just need to have the touchatag drivers: http://www.acs.com.hk/drivers/eng/ACR122USAM_inst_MAC10.56_101_P.zip )

http://code.google.com/p/touchatag-processing/

Re: New library: touchatag RFID readers on Processing

2 years ago

The Mac version has been officially released. Feel free to report any issues :)

Re: New library: touchatag RFID readers on Processing

2 years ago

thanks for the library and i am quite happy that it is also available for mac right now.
I just ordered a touchatag starter kit. Might be going to use it in one of my workshops with some students

Re: New library: touchatag RFID readers on Processing

2 years ago

I'm glad to hear that. Let me know if any issues arise.

nick_w

Re: New library: touchatag RFID readers on Processing

2 years ago

Hi

I am currently using the library with one touchatag reader. I plan to buy some more as soon as they are in stock again.

Is there a way to identify each reader uniquely (by a serial number like the tags for example) when you have multiple readers to ensure that each time the app runs it is able to know which reader is which, rather than just that there are 3 of them?

Thanks

Nick

Re: New library: touchatag RFID readers on Processing

2 years ago

Hi Nick,

The way I do it is to associate each reader with a position of a vector, that way you always know which is which.

nick_w

Re: New library: touchatag RFID readers on Processing

2 years ago

Thanks for that. I can see how to do that, but I'm assuming that will only work if the number of readers stays the same each time the programme runs, and position in the array may change if readers are plugged in different usb ports on the machine. I can see how to do it within any single run of the program, but I am thinking about a touring rig that may get setup in different configurations still being able to identify a particular reader in code.

squallevan

Re: New library: touchatag RFID readers on Processing

2 years ago

Hey,

I've started using this library a couple of days ago , but I'm sort of stuck at this point , I'm trying to get a sort of identifier or event or anything for when a tag is removed ( in this case I'm trying to pause an audio file when the tag is gone) got any suggestions ? Here's the code of the fucntion i'm using for checking , it might not be the best though..

void playMusic(String[] tagList)
{
for (int i = 0; i < tagList.length; i++)
{
if (tagList[i].equals("04c5aa51962280") && !player.isPlaying() && playing==false)
{
playing = true;
player.play();
}
//print(tagList[i]);
if (!tagList[i].equals("04c5aa51962280") && playing==true)
{
playing = false;
player.pause();
}
}
}

EDIT : I have also tried checking if it is null, but to no luck..

Re: New library: touchatag RFID readers on Processing

2 years ago

Have you tried your code with a predefined array to see if it works? What happens when you run your code?

Re: New library: touchatag RFID readers on Processing

2 years ago

hey augustoest,
told you i am going to use them for some kind of workshops.
Thats what i am currently doing, and we realized the mac drivers dont work very well. The framerate drops down to 2-3 frames even with the simplest sketches getting slower and slower, looks like some memory issue... we had have that problem with every mac we tested it on. Are you aware of that problem? If you need some more information let me know...

Re: New library: touchatag RFID readers on Processing

2 years ago

I wasn't aware of that problem, I ported the code a bit in a rush. I'm really sorry if it caused you any problems. Unfortunately I can't work on it right now, but if you want I can send you the source code for the library. My email is augustoeae@gmail.com.

Re: New library: touchatag RFID readers on Processing

1 years ago

thanks, but i worry i dont have much experience in developing such drivers.
But i even realized that it is not working perfect on windows as well.
its not as bad as on mac systems thats why i didn't realized it earlier but on pcs it runs slow as well. it gets down to 5 frames as soon as i work with the reader no matter what the sketch is actually doing.

we tested it on about 14 different pcs as i am using your library for my students projects and they get the same problem on every system with different OS, processing and Java versions...

If you get the chance to look into it, that would be great!

Re: New library: touchatag RFID readers on Processing

1 years ago

That's so strange, I've worked with the Windows version on a couple of applications and I never had any problems (even on different computers). I'll take a look.

Re: New library: touchatag RFID readers on Processing

1 years ago

thanks that would be nice. if i can help you or test, let me know.

Re: New library: touchatag RFID readers on Processing

1 years ago

Hello,

I've recently started using the library with the goal to output a timestamped CSV file whenever a tag is detected. I'm using PrintWriter and CreateWriter at the moment for generating the CSV file.

I'm having trouble getting the tagid written as a string to the text file...is there an easy way to do this?

At the moment I've very simply modified the example like this:

void draw() {
// Gets the number of touchatag readers connected
int readers = rfid.On();
if (readers != 0) {
// Gets the tags for each of the touchatag readers
for (int i = 0; i < readers; i++) {
tags[i] = rfid.tagsOnReader(i);
println(rfid.tagsOnReader(i));
output.println(rfid.tagsOnReader(i));
}
}
}

But it seems that the output.println is spitting out different stuff than what's appearing in the processing console...

Re: New library: touchatag RFID readers on Processing

1 years ago

Have you tried using the values in tags[i]?

Re: New library: touchatag RFID readers on Processing

1 years ago

Got it working after I realised that the tags were stored in an array. I used a join command to spit the tag id's out to a txt file

stringtags = join(tags[i], ", ");

At least it's working now ... only thing is that it refreshes the reader value every 3 seconds or so. Any ideas to increase the reading speed?

Re: New library: touchatag RFID readers on Processing

1 years ago

@augustoest, did you get the chance to check? do you get similar results?

Re: New library: touchatag RFID readers on Processing

1 years ago

Hi,

After evaluating the app I'm making some more, I'm experiencing simular problems as @cedrickiefer. The initial framerate when starting my sketch is about 9FPS and keeps dropping down over time.

Also, the void draw() seems to refresh only every 3 seconds, whereas I would expect it to refresh together with the framerate.

So, I'm suspecting there's a memory leak somewhere in the library ... hoping for a fix, or I could try looking at the driver but I've got no idea if I can solve it ^^

Re: New library: touchatag RFID readers on Processing

1 years ago

Small update:

I tried running my program on windows instead of OSX, it's running a lot better there. The readings from the reader are almost instant. However, when checking the framerate, it starts 'normal' but goes down to about 4.2FPS (using println(frameRate); ).

At the moment I'm not using a graphical output, but I can imagine that when using interactive graphics this drop in framerate can be limiting.

If I can be of any help testing / looking at the drivers, I'll try to check back here.

Re: New library: touchatag RFID readers on Processing

1 years ago

funkelicious, if you want I can send you the source code. Unfortunately, I really don't have the opportunity to look into this matter at this moment.

axoia2

Re: New library: touchatag RFID readers on Processing

1 year ago

edit: increased stability by moving the rfid.on from draw to setup. again example only for 1 reader :)

import touchatag.*;
Touchatag rfid;
int numOfReaders = 1;
String a;
String[][] tags = new String[numOfReaders][1];
void setup() {
rfid = new Touchatag(this);
a = "";
int readers = rfid.On(); }
void draw() {
tags[0] = rfid.tagsOnReader(0);
if (join(tags[0],"").equals("")) {a = "";}
else {
if (join(tags[0],"").equals(a)) {}
else {
a = join(tags[0],"");
open("check.vbs " + a);
delay(3000);
}
} }

sample for check.vbs

'setsoundfile = "notify.wav"
'set objshell = createobject("wscript.shell")
'strcommand = "sndrec32 /play /close " & chr(34) & setsoundfile & chr(34)
'objshell.run strcommand,0,false
Set args = WScript.Arguments
arg1 = args.Item(0)
msgbox arg1

coopersmi..

Re: New library: touchatag RFID readers on Processing

1 year ago

Thank you for your great library. Really appreciate someone taking the time to bring Touchatag over to Processing.

I'm using the mac version, and when I drag the two files you've specified over to the install folder, I get an error "The action “Move Finder Items” encountered an error. Check the actionʼs properties and try running the workflow again."

Do you have any possible solutions? Thank you!

Cooper

Re: New library: touchatag RFID readers on Processing

1 year ago

You can move these files manually to ~/Processing/libraries/touchatag/library/

Hope it works :)

ashleyjam..

Re: New library: touchatag RFID readers on Processing

3 months ago

still doesnt work for me. I have an acr122ua9 , with latest low level drivers installed and the hardware works (in the sense that it glows red, scan a tag and it goes green and beeps) but i get the libnfc.dylib error in processing 1.5.1 on mac osx 10.6.8

tactileda..

Re: New library: touchatag RFID readers on Processing

1 year ago

I am getting a similar error to @ coopersmith, I am also running it on a Mac. This is the error:

Exception in thread "Animation Thread" java.lang.UnsatisfiedLinkError: /Users/trevor.hogan/Documents/Processing/libraries/touchatag/library/libnfc.dylib: Library not loaded: /usr/local/lib/libusb-0.1.4.dylib Referenced from: /Users/trevor.hogan/Documents/Processing/libraries/touchatag/library/libnfc.dylib Reason: no suitable image found. Did find: /usr/local/lib/libusb-0.1.4.dylib: stat() failed with errno=13 /usr/local/lib/libusb-0.1.4.dylib: stat() failed with errno=13

I did have trouble installing the .dylib files, but I managed to move them to the lib folder manually.

Any thoughts?

ashleyjam..

Re: New library: touchatag RFID readers on Processing

3 months ago

im having smae problem, moved files manually. did you get it to work ?

lorainecl..

Re: New library: touchatag RFID readers on Processing

1 year ago

The link for the library download doesn't seem to be working any more.
Could you post up a new link for the library?

Thanks
Loraine

Re: New library: touchatag RFID readers on Processing

1 year ago

The link is fixed, thanks :)

haffa87

Re: New library: touchatag RFID readers on Processing

1 year ago

hello;

i'm starting to implement a touchatag reader and i don't know how to proceed :(

if any one can help me or sending me and exemple source code??

thank you!

http://code.google.com/p/touchatag-processing/

Re: New library: touchatag RFID readers on Processing

1 year ago

You can find an example here:

haffa87

Re: New library: touchatag RFID readers on Processing

1 year ago

yeah i find this exemple but i need to know how to implement the reader the hole project i don'y know how to proceed!!thx

joep.elde..

Re: New library: touchatag RFID readers on Processing

1 year ago

Hi,

I'm having some troubles with the library on a mac, whenever I start the example sketch without a tag on the rfid reader I get the ArrayIndexOutOfBoundsException: 0 error on this line:

"tags[i] = rfid.tagsOnReader(i);"

When I start the sketch with a tag on the reader it works ok and I can detect additional tags, but when I remove the initial tag from the reader The sketch quits unexpectedly and give this:

"Invalid memory access of location 0x0 eip=0x3b9c47" error in the processing log

I'm using a acr122u-A9 reader which is almost the same as a touchatag branded reader, has this something to do with it?

Any thoughts how I might resolve this?

Thanks

Re: New library: touchatag RFID readers on Processing

1 year ago

I assume the problem is due to the fact you're not using the touchatag reader. Even with no tags on it, it shouldn't give you that error on tags[i] = rfid.tagsOnReader(i);

Before trying to read tags, have you checked it's length? E.g.:

String[] tags = rfid.tagsOnReader(i);
if (tags.length != 0) {
// Code
}

willbarde..

Re: New library: touchatag RFID readers on Processing

10 months ago

Hello All

My touchatag has connected without a hitch to processing 1.51, and the code sample works well. Sadly thats about it. I am wanting to integrate the touchatag system into a music player. At the moment I can't even get processing to recognize which tag has just been read. Here is my code sample.

import touchatag.*;

Touchatag rfid;

int numOfReaders = 3;

String[][] tags = new String[numOfReaders][3];

void setup() {

rfid = new Touchatag(this);

size (200,200);

background (20);

int readers = rfid.On();

}

void draw() {

tags[0] = rfid.tagsOnReader(0);

if(tags[0].equals("04c32f193e2580")){

println("this works");

}

println(tags[0]);

}

But I never get a "this works" message in the monitor. I am very new to processing, and this does not seem to help.

Can anyone show me the error of my ways.

Many thanks

Will

Re: New library: touchatag RFID readers on Processing

10 months ago

I can spot this this error:

if(tags[0].equals("04c32f193e2580")) -> You're comparing an array with a string

Assuming you only have one reader, you can try something like:

import touchatag.*;

Touchatag rfid;

String[] tags = new String[3];

void setup() {

rfid = new Touchatag(this);

size (200,200);

background (20);

}

void draw() {

int reader = rfid.On();

if (reader) {

tags = rfid.tagsOnReader(0);

if (tags[0].equals("04c32f193e2580")) println("this works!");

}