Schematic of the Portable Arduino Uno R4 WiFi Distance Sensor

This project incorporates an Arduino Uno R4 WiFi Single Board Computer, an SSD1306 OLED Display and an HC-SR04 Ultrasonic Sensor. The project has a ‘Go Button’, and when pressed, the sensor makes a measurement, and reports the distance to the target. The project is powered by a Sunfounder breadboard power bank.