Distance Measurement with HC-SR04 on an LCD

This is a random thing I made on my journey to build fun stuff with electronics

It measures distance using an ultrasonic sensor and displays the result on a 16×2 LCD.

I ran this using the platformIO extension on vscode with the ARDUINO framework

Hardware

• ESP32 (what im using but other microcontrollers should be fine, just watch the pins and libraries)

• Ultrasonic sensor: HC-SR04 (has echo and trig pins seperate)

• 16×2 LCD (had to suffer on 4-bit mode since i didnt have an I2C)

• Potentiometer (for LCD contrast)

• Breadboard and jumper wires

DEMO

[WIP]