In this Video you will learn how to make a Sonar Radar with the OLED Display. This Tutorial was made by a user Compact DIY , you can check out his youtube channel here where you can find other Visuino videos.
How to use ultrasound distance finder module,rotary encoder to specify and display ultrasound range on Lcd and set the limit distance with a red LED. We will be able to save the chosen distance by pressing on a rotary encoder button. Read Full tutorial here.