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Why make a clone of another board? First and foremost it is not a straight copy of he original. board, rather it is an improved version of the Huzzah32. The original has issues with the biggest two being the price and the power consumption in deep sleep mode. The current consumption in deep sleep mode is about 10uA. The battery voltage monitor is nearly identical to the original and has two 100k resistors in series with the center tap connected an ADC channel . In this design it would be the dominant power draw so I added a high side switch that disconnects the resistors from the LiPo-cell when the board is in sleep mode.

Other small changes are the addition of activity LEDs for the RX and TX signals of the USB to Serial converter, a cutout of the PCB underneath the printed antenna of the Wroom-32 module to restore the RF performance of the Wroom-32 module.