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会员注册本文章将教会大家如何使用Arduino制作抢答器。
一、目标实现：
使用Arduino编程，使得按下按钮对应的LED灯会亮起，按下结束所有LED灯熄灭。
二、前期准备：
软件准备：Arduino 18.8
硬件准备：Arduino开发板，LED灯，220Ω电阻，面包板，杜邦线，按键。
三、接线：
如下图：
四、编写程序：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | int LED_R = 6;int LED_Y = 7;int LED_G = 8;int PIN_R = 3;int PIN_Y = 4;int PIN_G = 5;int OVER = 2;void setup() {pinMode(LED_R, OUTPUT);pinMode(LED_Y, OUTPUT);pinMode(LED_G, OUTPUT);pinMode(PIN_R, INPUT);pinMode(PIN_Y, INPUT);pinMode(PIN_G, INPUT);}void loop() {if (digitalRead(PIN_R) == LOW){RED();}if (digitalRead(PIN_Y) == LOW) {YELLOW();}if (digitalRead(PIN_G) == LOW){GREEN();}}void clear_led(){digitalWrite(LED_R, LOW);digitalWrite(LED_Y, LOW);digitalWrite(LED_G, LOW);}void RED(){while (digitalRead(OVER) == 1){digitalWrite(LED_R, HIGH);digitalWrite(LED_Y, LOW);digitalWrite(LED_G, LOW);}clear_led();}void YELLOW(){while (digitalRead(OVER) == 1){digitalWrite(LED_R, LOW);digitalWrite(LED_Y, HIGH);digitalWrite(LED_G, LOW);}clear_led();}void GREEN(){while (digitalRead(OVER) == 1){digitalWrite(LED_R, LOW);digitalWrite(LED_Y, LOW);digitalWrite(LED_G, HIGH);}clear_led();} |
五、Arduino抢答器成果展示：
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