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I developed an Android app for a Samsung Galaxy Tab 4 in Android 4.4. Now I'm trying to connect a RFID card reader through my microUSB port to emulate a keyboard so we can read different tags which contain different info. I'm using the Syris RD200-M1-G reader. I searched a lot in the internet and I read that is compatible with Android. My problem is that I connect it to my tab and the reader is powered off and I can't do anythyng.

Do I need something to power it? or maybe in my program code? Any help will be so appreciated. Thank you very much.

ben75
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acostela
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  • This isn't really about programming, therefore I flagged it as off-topic. – Kevin Apr 20 '15 at 10:39
  • Sorry it's the first time that I ask something in relation with this and I don't know if it's only hardware or I need to program something. I.E. in a readme file I saw that you can use it including a .dll and there is an example app that is done in visual basic. But in android we can not use .dll libraries... – acostela Apr 20 '15 at 10:41
  • I can see now why you think that belongs here, thanks for the clarification, but I still think it's not about programming. – Kevin Apr 20 '15 at 10:45
  • ok must I change my tags? or where can I post it? I never posted anything in off-topic – acostela Apr 20 '15 at 10:49
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    You misunderstand, off-topic means it doesn't belong here, it's not a separate place to post stuff. You can try posting your question on http://android.stackexchange.com/ or maybe even on http://softwarerecs.stackexchange.com/ if the problem is software-related. – Kevin Apr 20 '15 at 10:52
  • I looked around a bit for you and it seems your [reader gets it's power through USB](http://www.syris.info/reader/USB-RFID-reader/RD200-M1.html) and Android devices needs to support [OTG](http://en.wikipedia.org/wiki/USB_On-The-Go) to able to power other devices through USB. [Your tablet apparently doesn't support this](http://en.wikipedia.org/wiki/Samsung_Galaxy_Tab_4_7.0). So i guess that is the problem. – Kevin Apr 20 '15 at 11:07
  • Thank you very much Kevin, I was reading about that and I was suspecting that was my problem – acostela Apr 20 '15 at 11:11

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