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하트 그리기#include "NDelayFunc.h"// R1~R4가 빠져있어서 추가했습니다.enum { R5=1, R7, C2, C3, R8, C5, R6, R3, R1, C4, C6, R4, C1, R2, C7, C8 };const unsigned int pins[1+16] = { -1, 10, 11, 12, 13, 14, 15, 16, 17, 2, 3, 4, 5, 6, 7, 8, 9};const unsigned int R[1+8] = { -1, R1, R2, R3, R4, R5, R6, R7, R8 };const unsigned int C[1+8] = { -1, C1, C2, C3, C4, C5, C6, C7, C8 }; // C5 중복 및 오타 수정const unsigned int heart[1..

millis 함수로 현재 시간 확인하기void setup() { Serial.begin(115200);}void loop() { unsigned long t_now = millis(); Serial.println(t_now);} millis 함수로 delay 대체하기unsigned long t_prev = 0;const unsigned long t_delay = 1000;void setup() { Serial.begin(115200);}void loop() { unsigned long t_now = millis(); if (t_now - t_prev >= t_delay) { t_prev = t_now; Serial.println(t_now); }} 1초에 한번 t1, 0.5초..