1. M

    RFID copier, source, execution

    Hello, I did some google searches for my project, and came upon this forum, so hoping it fits the forums purpose. Here is what I’m looking at doing: I have two vehicles under a local carwash companies monthly “unlimited subscription”. They just implemented RFID stickers for the system to...
  2. memedin

    esp32 c3 rc522 df player mini there is a voltage drop in the circuit

    I want to play music from dfplayer mini with an rfid card reader. When I set up the circuit on the plate, I get a voltage drop, I don't know why, very meaningless ı use 5vto3v3 ams1117, entry 10uf exit 10uf and normally I was going to feed it with tp4056, I would switch my circuit with a...
  3. D

    Making 2 RFID reader/writer modules talk to each other

    Hello everyone, I'm working on a project to communicate between two boards OTA (over-the-air) but within close proximity. I could consider LED/laser based communication, but that is too directional. WiFi or BT are wireless, but using them increases the BoM cost. I considered NFC/RFID, but all...
  4. L

    RFID Power Delivery Wearable

    So I have a project I'm working on a project to light these "NFC fingernail lights": They light up when in the presence of a 13.56MHz RFID field. The issue is other than my phone, I have no way to light them day to day. I would like to develop a device I can hold, like fist semi closed and it...
  5. M

    Mouse Trap Sensor

    I'll try to be as concise as possible. I'm an engineering student tasked by my university to create a mouse trap that alerts caretakers the trap has gone off. There is already a product on the market that achieve this but need to be hooked up to a wifi signal. The problem is that the university...
  6. Jenish989

    How do I use this Antenna?

    I bought this antenna for my Sparkfun Simultaneous Reader, but I don't understand which jumper will do what function. The antenna didn't come with datasheet and I can't find it on the Internet. I tried connecting different jumpers and tried to make sense what jumper will do what, but can't...
  7. G

    Large area 13.56MHz RFID Reader

    Hello everyone I'm newbie to RFIDs and I would like make large area reader. I found antenna from the Taobao site. Which is 45x30cm coil antenna. But the problem Is I can't seem to find reader that can use that large antenna. Any suggestions or help will be appreciated. Here is the antenna link...
  8. jcordeiro

    Unsigned Char using RFID MFRC522

    I am brand new to Arduino programming and am having a difficult time getting my code to compile. The goal is to create a puzzle with four readers and to compare the UID codes and readers against a known key. In other words, put the tags in the correct order and the puzzle will unlock. I have...
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