Three quick (qwiic, heh) questions about the Thing Plus

Qwiic System
1
  1. If I power the Thing Plus off of a USB power bank, is there a way for the Thing Plus to detect when the battery bank is getting low? Will the voltage of the power bank drop to say … 4.9v when the power bank is at 50% life left, like a car battery might.

1a. If I power the Thing Plus using it’s onboard 3.3v connector and connect to an appropriate battery source, will it be able to tell battery life left?

  1. I need my Thing Plus to be able to record some data directly on the device, I’ll be using it’s wifi capabilities to send data off of it, but in case the wifi goes down I would like to be able to retrieve the data off of the device’s internal storage. I am thinking this is ideal: https://www.sparkfun.com/products/15164, but do you have any other suggestions? Keeping this unit as plug’n’play as possible as my goal.

  2. I was checking out some examples in the Arduino IDE for the Thing Plus, I see that there is some webserver example sketches. Is the Thing Plus actually powerful enough and capable to do some light web CRUD? Can it read POST’d form data?

Cheers all. Ty.

2

As far as I can see, Thing Plus does not have an in-built battery monitoring option. Like any other ESP32 board, you can make a battery level indicator out of it. You will find many tutorials on how to make a battery voltage level monitoring circuit for ESP32. One way to do that is reading the output voltage of the battery using an analog pin of the ESP32.

3

Excellent. Would it be able to monitor the output from a USB power bank?