ESP32 Thing Motion Shield Hookup Guide
Contributors:
MTaylor
MTaylor 
Hardware Overview
The hardware is a conglomeration of an SD card socket, LSM9DS1 IMU, and GPS serial port. There's also an LED for general indication.
All components are populated on the top of the board. Here, you can see the SD card, IMU, and port. The ESP32 Thing is intended to sit above this board, so no pins are labeled.
There are no options on the bottom side. Here, you'll find labels for all of the pins. The two rows of pins on the side are wired together so that you have one available for prototyping after installing an ESP32 Thing.
The signals that are used are show here, grouped by function.
| ESP32 Thing Pin | Direction | Signal | Group | ESP32 Function |
|---|---|---|---|---|
| GPIO 13 | I | LED | LED | GPIO 13 |
| GPIO 16 | I | GPS_TX | GPS UART | Serial 1 |
| GPIO 17 | O | GPS_RX | GPS UART | Serial 1 |
| GPIO 18 | I | SD_SCK | SD Card | SPI SCK |
| GPIO 19 | O | SD_DO | SD Card | SPI MISO |
| GPIO 23 | I | SD_DI | SD Card | SPI MOSI |
| GPIO 33 | I |
SD_CS | SD Card | GPIO 33 |
| GPIO 38 | I |
SD_CD | SD Card | GPIO 38 |
| GPIO 21 | I/O | SDA | IMU | I2C SDA |
| GPIO 22 | I | SCL | IMU | I2C SCL |