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New Development Board for Li-Ion/LiPo + Solar Powered Projects: ESP32-S3 PowerFeather
von Powerfeatherdev (powerfeatherdev)

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Hello everyone, I do hope my small self-promotion is ok here. I’d like 
to introduce a board I designed and developed: ESP32-S3 PowerFeather. 
It’s a low-power, solar-capable, Li-ion/LiPo powered development board 
in a Feather-compatible form factor.

In terms of features, you can think of ESP32-S3 PowerFeather as the 
combination of the following hardware on a single board:

- ESP32 Firebeetle (or any other board with low quiescent current)
- Adafruit Universal USB  DC  Solar Lithium Ion/Polymer charger - 
bq24074 (or other charging modules with ‘pseudo’ MPPT)
- Adafruit LC709203F LiPoly / LiIon Fuel Gauge and Battery Monitor - 
STEMMA JST PH & QT / Qwiic (or MAX17048 module)
- Adafruit INA260 High or Low Side Voltage, Current, Power Sensor (or 
other modules for monitoring supply/battery voltage and current)

There is an Arduino/ESP-IDF SDK to help users with the power management 
and monitoring. You can find more details and links to various stuff in 
the landing page if you’re interested to know more: 
https://powerfeather.dev/.

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Re: New Development Board for Li-Ion/LiPo + Solar Powered Projects: ESP32-S3 PowerFeather
von Powerfeatherdev (powerfeatherdev)

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Since the release of ESP32-S3 PowerFeather last month I’ve been working 
on a demo web app that lets users explore some of the features of 
ESP32-S3 PowerFeather, which I recently got to a decent state:

https://i.ibb.co/WWMsGxT/charging-current.jpg

The web app is served from the ESP32-S3 PowerFeather (acting as an AP) 
and is accessed from the tablet's web browser. The part encircled in 
yellow shows the battery being charged at 1.5 A from the solar panel at 
the set MPP voltage of around 12 V.

The web app also displays other supply & battery telemetry information 
as well as some power management controls which are all built-in into 
the board and accessed using the PowerFeather-SDK API.

For those interested in the demo web app, maybe to try it on their 
PowerFeather or just to see how this was created: 
https://github.com/PowerFeather/powerfeather-demo .

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