Get this board for board manager in arduino
https://github.com/benlye/anet-board/raw/master/package_anet_board_index.json
https://github.com/ralf-e/ANET-3D-Board-V1.0/blob/master/ANET3D_Board_Schematic.png
x-stop -> pin 16
Will pull low when triggered
https://www.makerguides.com/a4988-stepper-motor-driver-arduino-tutorial/
A4988 Datasheet: https://www.pololu.com/file/0J450/a4988_DMOS_microstepping_driver_with_translator.pdf