How to know Ultrasonic on LCD
- The HC-SR04 Ultrasonic Module has 4 pins, Ground, VCC, Trig and Echo. The Ground and the VCC pins of the module needs to be connected to the Ground and the 5 volts pins on the Arduino Board respectively and the trig and echo pins to any Digital I/O pin on the Arduino Board.
- The HC-SR04 sensor attach to the Breadboard - The Sensor VCC connect to the Arduino Board +5V - The Sensor GND connect to the Arduino Board GND - The Sensor Trig connect to the Arduino Board Digital I/O 9 - The Sensor Echo connect to the Arduino Board Digital I/O 10
LCD Display Connection:
Before wiring the LCD screen to your Arduino or Genuino board we suggest to solder a pin header strip to the 14 (or 16) pin count connector of the LCD screen. To wire your LCD screen to your board, connect the following pins:
LCD VSS pin to Arduino GND LCD VDD pin to Arduino 5V LCD VO pin to 10k Potentiometer center pin LCD RS pin to digital pin 1 LCD RW pin to Arduino GND LCD Enable pin to digital pin 2 LCD D4 pin to digital pin 4 LCD D5 pin to digital pin 5 LCD D6 pin to digital pin 6 LCD D7 pin to digital pin 7 The 10k Potentiometer's other legs connect to +5V and GND For the backlight of the display, pin 15 (A+) and 16 (K-) of the LCD connect to +5V and GND
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