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Using NFC to Operate and Read pH Electrode (I2C ADC) via Antenna Cable/Smartphone

MERSI
Associate III

Hello everyone,

I'm exploring the possibility of using NFC technology to operate and read data from a sensor equipped with an I2C ADC (Analog-Digital Converter). Specifically, I'm interested in leveraging an antenna cable or a smartphone as part of my main system setup.

Here's the scenario I have in mind:

  • I want to utilize NFC functionality to communicate with the sensor.

  • The sensor incorporates an I2C ADC for digital data output.

  • Ideally, I would like to use either an antenna cable or a smartphone to facilitate this NFC communication.

System Diagram:
[Main System] - [Antenna Cable/Smartphone (AAT)] - [NFC Reader] - [I2C] - [ADC]

My questions are:

  1. Has anyone here successfully implemented a similar setup using NFC to communicate with an I2C ADC-equipped sensor?

  2. What specific NFC reader ICs or modules would you recommend for this application?

  3. Are there any particular challenges or considerations I should be aware of, especially regarding antenna cables or smartphone integration? 

Any insights, experiences, or advice would be greatly appreciated!

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1 ACCEPTED SOLUTION

Accepted Solutions
Brian TIDAL
ST Employee

Hi,

 

I recommend using an ST25DV dynamic tag on the sensor side instead of a reader. This allows the sensor data to be transferred through the ST25DV mailbox. A smartphone can then access the mailbox via NFC.

Refer to the STEVAL-SMARTAG2 evaluation board at STEVAL-SMARTAG2 for an example of such an architecture.

Regards

BT

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

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1 REPLY 1
Brian TIDAL
ST Employee

Hi,

 

I recommend using an ST25DV dynamic tag on the sensor side instead of a reader. This allows the sensor data to be transferred through the ST25DV mailbox. A smartphone can then access the mailbox via NFC.

Refer to the STEVAL-SMARTAG2 evaluation board at STEVAL-SMARTAG2 for an example of such an architecture.

Regards

BT

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.