Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [tag]

26 questions
4
votes
2 answers

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://ar.in.tum.de/pub/padoy2008IAAI/padoy2008IAAI.pdf)…
user93189
  • 141
  • 2
4
votes
4 answers

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 too simple, and I cannot view the code for say,…
hak8or
  • 1,070
  • 11
  • 23
2
votes
1 answer

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

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 saw just this: [786026.932028] usb 3-1: new…
Denys Vitali
  • 129
  • 1
  • 5
1
vote
2 answers

how to read power labels on home appliances?

I want to know how to read the power label of a home appliance in order to estimate energy cost. I have provided a picture of an example power label What i understand from the provided label is I use the rated power as its the power that an…
user117582
  • 13
  • 2
1
vote
1 answer

125 kHz RFID antenna and read range relation

I have designed 125 kHz RFID reader circuit with which I can read regular card type tags around 4-5 cm and key tag type around 2 cm range. You can see my current circuit and antenna information from image1 and image2 (changed capacitor value for new…
U.Sim
  • 69
  • 8
1
vote
0 answers

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 have a few questions regarding some design…
Shayne Colbert
  • 41
  • 1
1
vote
1 answer

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 mode and the frequency and codification of the…
W. Lenert
  • 21
  • 2
1
vote
0 answers

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 satisfy my needs. Does anybody have a suggestion?
Meghan O'Lone
  • 19
  • 1
1
vote
0 answers

Build or Buy Bluetooth 4.0 BLE Tag

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 option i.e BLE 4.0 (at least works for iPhone and…
nj2010zoom
  • 19
  • 1
0
votes
0 answers

Cache Configuration for MIPS Processor

I am having trouble figuring out the tag, set, and byte offset fields for a 32-bit MIPS processor with the following cache configurations: (a) A direct mapped cache with capacity 8192 bytes and block size 32 bytes. (b) A 8-way set associate cache…
Bryan C
  • 1
  • 2
0
votes
1 answer

RFID tag sensitivity values

The datasheets of the passive UHF RFID tags mentions the read and write sensitivity values in dBm. I see that the reader transmit power is usually mentioned in watts and dBm values can be converted to watt. However, what does the -sign in this…
Zaffresky
  • 65
  • 6
0
votes
1 answer

Should the voltage be higher or lower when benchtop charging AA NiMH?

I thought I knew this, but now I'm learning more. I have 2 scenarios that seem the same, but have conflicting results. Scenario 1. 16x AA NiMH in series to recharge, I set CC to 10%, the voltage starts out low around 18v-ish, then over 12-15h the…
user3424554
  • 11
  • 2
0
votes
0 answers

Receiver antenna design for reading PIT tags implanted in snakes and reptiles

I am talking to a local conservation outfit trying to replace active implantable radio tags with passive PIT tags (I do not know who the manufacturer is). These active tags are really tiny glass capsules with a small antenna sticking out of them and…
user3418620
  • 1,320
  • 12
  • 24
0
votes
1 answer

Related to multiple tags

I am trying to find out the following points related to multiple tags. Whether multiple tags can have same information in them or they will always have different information. Real life example of multiple tags in RFID. Any help in this regard…
Saru
  • 3
  • 1
0
votes
0 answers

How to tell what type of RFID tag?

I have an RFID tag for access to my apartment building that I would like to clone(buying one through strata would be 100s of dollars). I have a proxmark 3 easy and have cloned tags in the past with great success. However the proxmark cant even see…
bega2550
  • 1
1
2