Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
My partner and I are creating an app designed for P2P as well as traditional user/vendor interaction. We need a wearable that can create a mutual event on the back end when the two wearables touch or are in close proximity. I see the ST25R3916 or STM...
I'm trying to read the ST25DV64K memory but the ST25 NFC Tap app just keeps trying to read it, it keeps blinking as if it's trying to read it and then fails and the screen goes back to normal. I'm using a Samsung S24 Uktra with Android 16.
Hi,I’ve started working with the ST25R100 NFC IC using the X-NUCLEO-NFC09A1 board. I’m currently testing the initialization part and trying to read the Product ID via SPI.I’m getting a Product ID value of 0xA9, but I’m not sure if this is correct. Co...
Hi,is there a polling-only Linux C code example for the X-NUCLEO-NFC09A1? The demo app is IRQ based and we plan to use many readers so it would be convenient to save the IRQ pin and use only the CS pin per device.Regards.
Hello, I have a problem after updating the system to Android 16. Before, everything was great. I have a custom application to work with ST25DV04KC. Now, the NFC service crashes before connection, and the system app opens NDEEF. Only on the first "tap...
I'm developing an ios app and a need to present a password to write a protected block. I use the custom command 0XB3 that i allready used in the equivalent android app. Unfortunately without success. So I tried with the custom command menu of the NFC...
Hello ST Community, Our company is preparing to begin a project segment for our mobile application that would involve switching to the ST25TV NFC chip specifically for its anti-cloning protection features. I am not a developer myself, but I would...
I am working on an electronic chessboard that connects to Lichess. The board should be able to detect any chess position at any time, so I cannot rely on move tracking. For this reason, I chose NFC to identify each piece using tags.I am currently dev...
This is a custom-made PCB antenna board utilising the ST25R3911B chip, but I am unsure how to proceed with impedance matching debugging and parameter configuration. Could you offer some guidance? Below are the antenna dimensions, the calculated imped...
Currently, we are developing a card reader featuring a circular NFC antenna. However, due to the lack of equipment for measuring antenna parameters, we are reliant solely on calculated theoretical values. The circuit board and antenna are depicte...
