描述

使用一些傳感器，我從植物中獲取實時讀數，通過 SonicPi 觸發聲音文件。

接收來自傳感器的實時讀數并進行比較，以檢查它們是否低于臨界水平，如果是，Arduino 會發出一個 MIDI 音符：一個 F# 音符用于亞臨界水平（當植物需要澆水時）和一個Bb 注意水分含量突然上升時（給植物澆水時）。

然后 MIDI 音符通過虛擬端口和串行橋接。

SonicPi 在虛擬端口上監聽傳入的音符，并比較傳入的音符是 F# 還是 Bb。

如果是前者，它會觸發一個聲音文件，如果是后者，它會觸發另一個聲音文件。

總而言之，該植物正在演奏只有兩個音符的音樂表演。

項目的控制流程。

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-Arduino代碼

int sensor_pin = A0;
int output_value_new ;
int output_value_old = 0;
int satisfied_note = 0x6A;
int scream_note = 0x66;
int threshold_moisture = 80;
void setup() {
 Serial.begin(9600);
 Serial.println("Reading From the Sensor ...");
 delay(2000);
 }
void loop() {
 output_value_new= analogRead(sensor_pin);
 output_value_new = map(output_value_new,550,0,0,100);
 if (output_value_old ==0){
 output_value_old = output_value_new;
 }
 if (output_value_new <= threshold_moisture) {
  //Note on channel 1 (0x90), some note value (note), silent velocity (0x00):
  noteOn(0x90, scream_note, 0x7F);
  delay(100);
 }
 int output_difference = output_value_new - output_value_old;
 if (output_difference >=30){
 //Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
 noteOn(0x90, satisfied_note, 0x7F);
 delay(100);
 }
 Serial.print("Mositure : ");
 Serial.print(output_value_new);
 Serial.println("%");
 delay(1000);
 output_value_old = output_value_new;
}
void noteOn(int cmd, int pitch, int velocity) {
Serial.write(cmd);
Serial.write(pitch);
Serial.write(velocity);
}

-SonicPi代碼

screams = "YOUR_SMAPLE_FOLDER_HERE"
satisfied = "YOUR_SMAPLE_FOLDER_HERE"
live_loop :midi_piano do
use_real_time
note, velocity = sync "/midi:loopmidi_port_0:1/note_on"  
if note == 102 #Fsharp7
 sample screams, rrand_i(1,7)
 sleep(rrand_i(1,5))
end
if note == 106 #Bb7
 sample satisfied, rrand_i(1,3)
 sleep(rrand_i(1,4))
end
end
in_thread do
use_real_time
use_real_time
note, velocity = sync "/midi:loopmidi_port_0:1/note_on"
if note == 106 #Fsharp7
 sample screams, rrand_i(1,7)
 sleep(rrand_i(2,6))
end
if note == 102 #Bb7
 sample satisfied, rrand_i(1,3)
 sleep(rrand_i(1,4))
end
end

NOTE: I have made the demonstration video along the lines of those sleazy TV infomercial ads we used to see on cable.

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