1. How can the user change the Wi-Fi configuration?
click-me
’ file to reach the dedicated
www.avr-iot.com/aws page for the device and
enter the new credentials in the web form. Download the resulting file to the
CURIOSITY drive. Read more in Section Via AVR-IoT Webpage. Wi-fi
command. Read more in
Section Via AVR-IoT Webpage.2. How can the user change the Wi-Fi credentials using the online form without exposing the details to security threats?
Although it appears in the browser, the Wi-Fi credential setup form does not transfer any information to third parties. A small text file (WIFI.CFG) is created (this can also be done manually using any text editor) and it is recommended that saves it directly to the CURIOSITY drive. Since the browser settings vary according to the platform and personal preferences, the user might have to change them or perform a drag and drop from the default download folder. Even though it looks like the WIFI.CFG file is now stored on the CURIOSITY drive, this is just an artifact of the operating system (caching). No file is permanently recorded and the information contained is immediately used to update the Wi-Fi module settings. These settings will be maintained after subsequent power cycles of the AVR-IoT Development Board, but the file will disappear.
3. Can a phone/tablet alone be used to perform the demo?
Assuming the user has a way to provide power to the board (a USB back up battery, a USB charger, a Li-Ion battery, or other 3.3V-5V power supply), the QR code can be scanned (on a sticker under the board, next to the Microchip and Amazon color logos) using any smartphone camera (old operating system versions might still require a separate app) and open the resulting link in the smartphone browser.
4. The user scanned the bar code with the phone/tablet, but nothing happened?
Ensure the scanning of the QR code present on the sticker under the AVR-IoT WA board. It can be recognized by the distinguishing squares on the three of its corners and its proximity (same sticker) to the MCHP and Amazon logos (in color). Although there are also other bar codes present on the Wi-Fi module, and/or the anti-static bag the board came with, those are not QR codes.
5. Which battery is recommended to be used with the AVR-IoT WA Sensor Node board?
Microchip recommends Li-Ion or Li-Poly batteries with at least 400 mAh capacity and 3.7V nominal. For more information about powering the board, refer to the AVR-IoT Wx Hardware User Guide.
Other Helpful Tips:
The following steps are not required for operating the AVR-IoT WA Sensor Node board, but will significantly increase the possibility of positive results.