Med flere fargede knapper hvit og blå samt OLED display så lager vi i dag et veldig enkelt snake...
21. desember
I dag kobler vi opp litt flere knapper sammen med den passive buzzeren og lager oss et lite mini piano.
buzzer + → D15
buzzer - → jord (blå linje)
b1 → D4
b2 → D22
b3 → D18
b4 → D19
b1/b2/b3/b4 → rød linje
https://gist.github.com/senikk/44b1dfc0c5033ab24985ae063c957a4f
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| #include <Bounce2.h> | |
| int b1Pin = 4; | |
| int b2Pin = 22; | |
| int b3Pin = 18; | |
| int b4Pin = 19; | |
| int buzzerPin = 15; | |
| // Toner | |
| #define NOTE_C4 261 | |
| #define NOTE_C4S 277 // C♯4 | |
| #define NOTE_D4 294 | |
| #define NOTE_D4S 311 // D♯4 | |
| #define NOTE_E4 330 | |
| #define NOTE_F4 349 | |
| #define NOTE_F4S 370 // F♯4 | |
| #define NOTE_G4 392 | |
| #define NOTE_G4S 415 // G♯4 | |
| #define NOTE_A4 440 | |
| #define NOTE_A4S 466 // A♯4 | |
| #define NOTE_B4 466 | |
| #define NOTE_C5 523 | |
| // PWM-kanal for ESP32 | |
| int buzzerChannel = 0; | |
| Bounce b1 = Bounce(); | |
| Bounce b2 = Bounce(); | |
| Bounce b3 = Bounce(); | |
| Bounce b4 = Bounce(); | |
| void setup() { | |
| ledcAttachChannel(buzzerPin, 2000, 8, buzzerChannel); | |
| pinMode(b1Pin, INPUT_PULLDOWN); | |
| pinMode(b2Pin, INPUT_PULLDOWN); | |
| pinMode(b3Pin, INPUT_PULLDOWN); | |
| pinMode(b4Pin, INPUT_PULLDOWN); | |
| b1.attach(b1Pin); | |
| b1.interval(50); | |
| b2.attach(b2Pin); | |
| b2.interval(50); | |
| b3.attach(b3Pin); | |
| b3.interval(50); | |
| b4.attach(b4Pin); | |
| b4.interval(50); | |
| } | |
| void loop() { | |
| b1.update(); | |
| b2.update(); | |
| b3.update(); | |
| b4.update(); | |
| if (b1.rose()) { | |
| tone(buzzerPin, NOTE_C4, 250); | |
| } | |
| if (b2.rose()) { | |
| tone(buzzerPin, NOTE_C4S, 250); | |
| } | |
| if (b3.rose()) { | |
| tone(buzzerPin, NOTE_D4, 250); | |
| } | |
| if (b4.rose()) { | |
| tone(buzzerPin, NOTE_D4S, 250); | |
| } | |
| } | |
| void tone(int pin, int frequency, int duration) { | |
| ledcWriteTone(pin, frequency); // Start tone på ønsket frekvens | |
| delay(duration); // Vent i den ønskede varigheten | |
| ledcWriteTone(pin, 0); // Stopp tonen | |
| } |
