I've made an arduino circuit for my high school physics project. It uses an ultrasonic and an infrared detector to sense distances and operate a Servo and Leds and I am having troubles with the circuit diagram.
Can someone explain to me how I can represent an ultrasonic sensor, an infrared sensor and a servo in a circuit diagram? The ultrasonic sensor has 4 pins. Echo, trigger, ground and Voltage. The infrared and Servo have 3 each. The block diagram is as below