Fun with Arduino - a Series of Introductory Videos

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#42
Fun with Arduino 38 - Ultrasonic Distance Measurement with HC-SR04

The HC-SR04 is a sensor that has a little loudspeaker and a little microphone via which the distance to an object can be measured. It's ultrasonic, humans can not hear it.

Don't expect super high accuracy of this less than $1,- costing device, yet I was pleasantly surprised to see that measurements with an accuracy of a couple of mm are very well possible.

Link to Fun with Arduino 38 - Ultrasonic Distance Measurement HC-SR04


 
#43
Fun with Arduino 39 - OLED display SSD1306

We're going to add an OLED display to the ultrasonic distance measurement of the previous video. Together with a battery it now becomes a fully handheld portable device. This is just for fun, the actual purpose is to introduce the OLED display ... once we have that up and running there's a whole lot of fun and useful applications where they can be applied.

Link to Fun with Arduino 39 - OLED dDisplay SSD1306


 





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