Wemos D1 Battery Shield Deep Sleep Mod

November 14, 2023

This will explain how I enabled deep sleep to be used on the Wemos D1 Battery Shield. There was very little information available on this device, so I will outline the relatively simple process below.

As per the image above, remove the blue led directly above the Wi-Fi symbol. Once done, solder a wire between the RST pushbutton leg and GPIO16 of the WROOM02 ESP module.

In order for the WROOM02 to wake from deep sleep, GPIO16 must be tied to RST.

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