After studying the datasheet of M24LR, I am not sure if I implement two 3v button batteries, the M24LR could send back some massage (like UID) to the reader with a stronger signal than other passive tags. Here are my questions: 1: Will the signal st...
I am doing a project which requires ST25R95 reading distance operating about 30cm. I studied the EV kit of ST25R95 and implemented the circuit as a reference to design my system.Unfortuneately, the reading distance is still around 7cm. After several ...
Hi,I am using ST25R3916 to make an RFID reader, but I don't know how to calculate the transmit power of its antenna. I am using a differential antenna design, as shown in the figure below:Hope to get somebody's support.best regards,Lingfu
Hi !I use st25r3916 and esp32 for i2c or spi communication on my custom board.I'm referring to the st25r3916 i2c, spi driver related documents and codes from the link below.https://www.st.com/en/embedded-software/stsw-st25r-lib.html#documentationA...
Hi, I have a issue with the ST25R3916 when using the AAT and the Hardware wake up functions together. The tuning works fine and finds the best parameters, then when entering sleep mode the parameters changes to a fixed value. When waking up the first...
I am using ST25R3911DISCOComm.dll and the lib in a QT application. Using MSVC 2019 32-bit configuration I am able to get my application running using the 'Debug' sub-configuration only. If I use the 'Release' the application crashes immediately. My s...
Hi, I want to reconfigure the TX Power from transmitter to receiver. How to adjust my code to control automatic antenna tuning (AAT)? For example, I can increase the TVDD to max value which is the power supply of the tx driver, and which part of the ...
Hello,I am working on a project where I need to send information from an NFC reader to a tag. The idea is to use an (Arduino UNO + PN532) as an NFC reader and send the information to the ANT7-T-ST25DV04K module which will be connected to an MSP430 mi...
Hello to all,I would like to know what considerations and calculations i have to do to know the frequency shift as a consequence of the metal presence near the NFC/RFID antenna tag and also it is dependent of metal type and size of the tag. Thank you...
Hello,I'm using adafruit ST25DV module with Nordic 52832 as host MCU, and porting the code to host bases on the ST25DV_DISCOVERY_FW_V1.1.2 demo, then encountered below issues:1) In the demo, after enabling FTM, host MCU will keep monitoring the it st...