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Laser Tag System Design Review

I have been working on a project to make my own laser tag gins and sensor vests. I have completed the electrical side of my design but this is the first time I have designed something like this and ...
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1answer
24 views

Variations in RFID USB Serial reader detection distance by connected device

I have a RFID reader that sends the TAG information over USB serial. I have had some troubles with it in a product where the detection success rate changes alot depending on what the USB RFID tag is ...
0
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1answer
697 views

Increase range of 125khz RFID Reader

Currently the range for my 125khz RFID reader is about 4 centimeters. I have opened it like below: Is there any way to increase the range to around 10 to 20 centimeters? For example, increasing the ...
-4
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2answers
261 views

KiCAD How can I install every library in existence? [closed]

I'm trying to learn KiCAD and it seems that every 5 minutes I cannot find a component and substitute a different one (e.g. substitute lm317 for a lm338) This works all right in the schematic part but ...
0
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2answers
74 views

How is a NFC “connected tag” different from a full blown NFC reader?

I have played with NFC in the past, but those were full blown "NFC readers" based on NXP pn53x chips. I want to know, how is a so called "Connected tag" different from NFC readers? I found this chip ...
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1answer
2k views

How is one RFID reader able to read multiple tags?

Im looking to design a syystem that detects (location and identification) multiple rfid tags on a table top. Im quite new to rfid design and, i was hoping someone might point me in the right direction....
-1
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1answer
186 views

What is the frequency of response of a FDX-B RFID Tag protocol?

I am using the HTRC110 IC for driving the antenna, and the responses are always controlled by the SCLK signal. But when I send the command to read the RFID response, the IC enters in a transparent ...
0
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1answer
661 views

Copy nfc NXP MIFARE Classic [closed]

I have got a NFC key to enter in my room and i want to make a copy of this key in case of loss. I read the nfc tag key with my nexus 5 with Broadcom BCM20793M NFC controller. The phone reads the tag ...
0
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1answer
113 views

Ask about possibilty to use Digispark Pro as RFID Tag

I have read this article that explain how to use Attiny85 as RFID tag. Using an AVR as an RFID tag Is it possible to program Digispark Pro and use it as RFID tag??
1
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0answers
145 views

Ideas for triangulation of a small object within 6 feet

I'm looking to build a system that can detect the location of a tag within a 6 foot range to an accuracy of one or two inches. I have briefly looked into RFID sensors but I haven't found any that ...
0
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1answer
633 views

How can I find or build a passive RFID tag with a range of 6ft, as well as an associated reader?

I am looking to implement a RFID system that uses trilateration to localize a RFID tag. I have no experience with RFID, and although I have done some basic research, I have no idea where to begin. ...
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2answers
2k views

Implementing Processor Core for Cache Module in Verilog

I have written a simulation module for a Direct Mapped Cache (consisting of data, tag, and valid rams and cache controller) in Verilog. I now want to implement a Processor Core/Driver (also in Verilog)...
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1answer
6k views

Design RFID tag that works with Bluetooth

Is it theoretically possible to engineer manufacture a RFID tag that works within the Bluetooth wavelength range allowing a standard booth-tooth device (a phone for example) to power and pick up data ...
1
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0answers
266 views

Build or Buy Bluetooth 4.0 BLE Tag [closed]

I am planning to create a mobile application that scans a NFC tag and performs an action based on the unique scan (tap). Because Apple iPhone do not support NFC I am forced to look for an alternate ...
4
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2answers
189 views

Monitoring Use of Surgical Tools

First of all, I'm a biologist, so please let me know if this question is being asked in the wrong place. I regularly perform operations on rats and recently stumbled upon the following paper (http://...
2
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1answer
4k views

Read some (unknown?) RFID tags with a chinese reader / writer (125kHZ) [closed]

Some months ago I bought this 125kHz RFID Reader / Writer from eBay. I was wondering how can I actually read or write an RFID Tag with it. So I attached it by usb to my computer (running Linux) and ...
4
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4answers
3k views

What PIC24 C compilers are out there, and what is your opinion or review on them?

Specifically, the PIC24 series. I tried out microchips C30 compiler, but it seems to be a bit too complicated for me, and I couldn't find any libraries with it. Then I tried CCS, and it seems far ...