Stepper Motor and Ultrasonic sensor

Using Arduino Sensors
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I am completely new to arduino and coding, but I want to make a project where the stepper motor (Nema 17) runs upon pressing a start button, and when the ultrasonic sensor detects something within a certain range the motor will stop and be delayed for a few seconds before resuming.

The goal would be to build a conveyor belt that runs and when an object (lets say a container) is detected, an LED indicator light will turn on, the motor will stop and a valve will let out some fluid to fill up the contianer for a certain amount of time (I assume using a delay), then the motor will continue moving and repeat the loop.

I've already figured out the components and wired the breadboard and and built the conveyor.

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Good things to share here are a diagram showing all components and their connecting points. Also, verify each component operates with your code before interconnecting the components... to include power supplies.

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