Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hello,I currently working with the STEVAL-25R3916B kit and using the ST25R3916 GUI to tune the antenna. My goal is to achieve a target amplitude of 2600 mV or higher, but the system remains around 2 V even when 5 V is selected for RF power on the rea...
Hello, is there any additional documentation that supports this system diagram? My project will have one antenna that will be an RFID tag whereas the other antenna will be reader. Can ST25r100 support this use case? I'd like to have the ability to wr...
I’m currently working on a project where I already managed to read ISO14443 tags (NTAG213) successfully.To improve the reading quality and range, I now want to switch to ISO15693 tags.However, I’ve spent more than 30 hours trying, and so far, I haven...
I am using ST25R3916B with differential antenna without varicaps.The antenna is configured to receive maximum signal from the smartphone on the RFI1.There is a TFT display between the antenna and the smartphone. The smartphone reads the tag with gre...
Hi STNow I am using ST25R3916B evaluation board, it works well with the project code you provided.My final target is using 3920B on automotive for demostrating NFC card detection as well as digital car access to customer.But we will finally change to...
I am testing power consumption. The hardware is using nucleo-L476 and X-NUCLEO-NFC08A1, and the software is using the NFC06A1_PollingTagDetect routine from X-CUBE-NFC6. The test revealed that the average power consumption was 180 uA when entering the...
I am entering the world of NFC with a somewhat complex project, but I took the initiative to start it. The goal was to create a sensor that would work only with Energy Harvesting from the reader.For this, I chose the ST25R300 chip to be the chip for ...
I am using a custom PCB based on ST25R3911B + STM32F072C8T6, and I am encountering an issue where FeliCa cards cannot be read.Initially, I used the X-CUBE-NFC5 software package downloaded from ST’s official website, along with the integrated RFAL lib...
Hello everyone,I am using the X-NUCLEO-NFC10A1 NFC reader with an NXP MCU.I am able to successfully detect a MIFARE Classic 4K card using this reader.However, when I try to authenticate a sector for read/write access, I encounter an issue.I am sendin...
Hi,I am using the st25r3916b chip with phase awaken, wake-up timer range of 800 msec and delta 3.Once it wakes up, I go to read the value in the register 0x3A (Phase measurement display register) in order to check which is the difference between of t...