Product Overview

1/23/2018 ESP32 Environment Sensor Shield Hookup Guide - learn.sparkfun.com
https://learn.sparkfun.com/tutorials/esp32-environment-sensor-shield-hookup-guide?_ga=2.200929641.659504291.1516640116-204410570.1509632…
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Any I2C Sensor
We’ve provided a header which will allow you to connect any other I2C sensor or device you may think useful to the board. In fact,
the pinout of this header is such that many SparkFun I2C boards can be directly attached without any wire order change at all!