Keyestudio ESP32 - 3. Test Code; 4. Test Result

ESP32 Starter Kit
3. Test Code
When a large heart and a small heart switch display according to a certain time will give people a feeling of beating.
/*
keyestudio ESP32 Inventor Learning Kit
Project 18 Beating Heart
http://www.keyestudio.com
*/
#include "LedControl.h"
int DIN = 23;
int CLK = 18;
int CS = 15;
LedControl lc=LedControl(DIN,CLK,CS,1);
const byte IMAGES1[] = {0x30, 0x78, 0x7c, 0x3e, 0x3e, 0x7c, 0x78, 0x30}; // a big heart
const byte IMAGES2[] = {0x00, 0x10, 0x38, 0x1c, 0x1c, 0x38, 0x10, 0x00}; //a small heart
void setup() {
lc.shutdown(0,false);
// Set brightness to a medium value
lc.setIntensity(0,8);
// Clear the display
lc.clearDisplay(0);
}
void loop(){
for(int i=0; i < 8; i++){
lc.setRow(0,i,IMAGES1[i]);
}
delay(1000);
for(int i=0; i < 8; i++){
lc.setRow(0,i,IMAGES2[i]);
}
delay(1000);
}
4. Test Result
After connecting the wiring and uploading code, the two sizes of hearts are displayed alternately.
8.5. Arduino Project 111