Hi,
I am trying to develop a wearable medical device using the XIAO ESP32C6. I know on the Wiki page, it is recommended to use a 3.7V Lipo battery to battery this microcontroller. However, I am wondering if it is possible to power it using a non-rechargeable battery such as the CR2032. (I am also open to other battery options but I want to keep it compact and light.) I hope to hear some advice from people who have done something similar before.
Thank you.
i would say it would be a waste… the 3.7v Lipo is the best way to go… anything will be a wasteful pain
When selecting a non-3.7VLipo and powering from the 5V pin, consider that it must be capable of supplying a voltage of 3.6V or higher and (if wireless is required) a peak current of 350mA.
Thank you very much.
Thank you for the reply. I am a little lost on what you meant by “powering from the 5V pin”. Is it not recommended to connect the battery to the designated battery pins? Or does this only apply to non-rechargeable batteries?
Only rechargeable batteries can be connected to the battery pad.
I see. Then I guess I will have to connect the battery to the 5V pin.
if you are doing ultra low power you may consider an ATtiny processor… what is your device doing?
what he is noting is the threshold limit for the 3v3 is quite high… this is the difficulty of power from non-lipo battery… it is unable to hold the 3v3 threshold thruought the life of the battery… and so the device may soon or on initial startup experience brownout issues
My device uses LEDs and photodiodes to collect the refraction of light under the skin. I will look into ATiny processor but I think the XIAO ESP32 makes more sense because of its WIFI/BLE support.
like a pulse oximeter?
https://www.amazon.com/Wellue-Fingertip-Saturation-Batteries-Bluetooth/dp/B085ZFDMMX
It is kind of like this product. However, my project will (probably) also use deep learning to analyze the data.
interesting… you may be able to use this device… you should be able to communicate with it and download the real time data just as the phone app can do
If miniaturization is important, nRF52840 with low current consumption and minimum operating voltage should be used!
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