Summary of Project work3:Arduino code and the circuit diagram using arduino
The article presents the design and implementation of a "music garden" project using Arduino. The key component is an Arduino code that controls sensors (IRD) and sound output pins, detecting presence via IR sensors and triggering sound tones for individual flower pots. The program uses arrays to manage multiple sensor-tone pairs, ensuring sounds play only once per detection cycle with timing control. A circuit diagram accompanies the code, though in practice components like sound cards and sensors were grouped together for easier connection.
Parts used in the music garden:
- Arduino board
- Infrared sensors (IRD) - 8 units
- Sound cards (music output pins) - 8 units
- Connecting wires
- Power supply
In order to realise the “music garden”,the most important part is the Arduino code and circuit diagram.
First of all,I will present my Arduino code:(I will show you the way I think as a flow chart at first)
Flow Chart:
Details:this flow chart is a mode for one single flower pot
IRDs means the sensor
PREVn means the records about whether there are people in front the sensor
When turn on the IRDn and the PREVn equals FALSE,Which will trigger the sound card to play tone(TONEn)，then set the PREVn equals TRUE,and time(TIMEn) set up to 0,and that cycle repeats.
Code:
const int sets = 8;
const int tick = 100;
int IRD[sets] = {30, 31, 32, 33, 34, 35, 36, 37};
int music[sets] = {38, 39, 40, 41, 42, 43, 44, 45};
bool previous[sets] = {false, false, false, false, false, false, false, false};
double limit[sets] = {2.0, 2.0, 2.0, 2.0, 2.0, 2.0, 2.0, 2.0};
double time[sets] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
void setup() {
// put your setup code here, to run once:
for (int i = 0; i < sets; ++i) {
pinMode(IRD[i], INPUT);
pinMode(music[i], OUTPUT);
digitalWrite(music[i], HIGH);
}
}
void loop() {
// put your main code here, to run repeatedly:
int val;
for (int i = 0; i < sets; ++i) {
val = digitalRead(IRD[i]);
if (val == LOW && !previous[i]) {
digitalWrite(music[i], LOW);
previous[i] = true;
time[i] = 0.0;
}
if (val == LOW && time[i] >= limit[i]) {
digitalWrite(music[i], HIGH);
}
if (val == HIGH) {
previous[i] = false;
digitalWrite(music[i], HIGH);}}
delay(tick);
for (int i = 0; i < sets; ++i) {
time[i] += (double)tick/1000;
}
}
Secondly:I will present my circuit diagram
In practice,I did not obey strictly according to this diagram,I put all sound cards and sensors together which will be easy for me to connect the circuit.
For more detail: Project work3:Arduino code and the circuit diagram
