 Welcome to the part three of the SD25PC NFC software demos. We are going to talk about the SD eval smart tag one board. On sd.com you can put in that smart tag one or smart tag into the search box and it will come up with this this board right here. You can buy the board from separate distributors on Digikey or Mausers and the resource you can see the schematics, the layout and a lot of detail information about this board. Basically it's the board that has the SD25DV along with temperature humidity sensors. We also have accelerometers and barometric pressure sensors. This tag allows you to use NFC to gather data. It also can also use as a logger, a data logger with a battery. After you order your SD25DV, the eval smart tag board as I indicated earlier, you need to do a little shopping for the corn cell battery. Here's what you can find on Amazon. Of course you probably only need one. Sometimes you can look around the house and find all your desk and find a 3-volt CR2032. If not, you can get them on Amazon quite inexpensively. Here you can see the SD25DV smart tag board on board next to the SD25R3911B with the battery installed on the smart tag. Now you can see that the blinking of the LED of LED 5 second when you first insert the battery. It shows that the board is working and it's collecting data every 5 seconds. So now that I have my smart tag and I have the battery, insert the battery into the smart tag, then start your SD25PC NFC software. Put the board in proximity of the SD25R3911B as you've seen on the previous part and do a scan one once. Then go to demo on the smart tag. You will see this panel over here. Reconfiguration will show that the LED is blinking every 5 seconds as it should be. Now be aware that when the field, when the tag is in the field, the LED will not be blinking. It only blinks when the tag is outside of the field. But you should be able to read and write the configuration. So imagine if you were to take the board away from the NFC field, you see a blinking of every 5 seconds. Put it back into the field. What you see here is that the microcontroller got the field detection and therefore turned the LED off because we say we have the updating configuration, stop data logging. Change this to one second and then update configuration. Now move the board out of the field. Now the LED should be blinking every second. In the next video we will show you how to gather data and display them on dse25pc nfc.