Sound activated baby mobile by TheLoupen

Last crawled date: 3 years, 5 months ago

Simple baby mobile motor that activates when baby makes noise.
Only the axle needs supports (touching buildplate, 45 degrees)
Print the axle and hanger at 100% infill. Print the rest at 30% infill.
Other supplies:
Arduino Nano
28BYJ-48 Stepper motor
Stepper Controller (ULN2003)
608RS Bearing 8x22x7mm (or equivalent)
Sound Sensor
M3 screws
Wires
M4 nuts and bolts
Thanks to https://www.thingiverse.com/thing:3051036 for the stepper motor mount.
Here is the code I used:
include
define A 2
define B 3
define C 4
define D 5
const int stepsPerRevolution = 200;
int soundSensor = 7;
int FirstTime = 1;
Stepper myStepper(stepsPerRevolution, 2, 3, 4, 5);
void setup(){
myStepper.setSpeed(45);
pinMode(A,OUTPUT);
pinMode(B,OUTPUT);
pinMode(C,OUTPUT);
pinMode(D,OUTPUT);
pinMode (soundSensor, INPUT);
}
void write(int a,int b,int c,int d){
digitalWrite(A,a);
digitalWrite(B,b);
digitalWrite(C,c);
digitalWrite(D,d);
}
void spins(int times) {
myStepper.step(times);
write(0,0,0,0);
}
void loop()
{
int statusSensor = digitalRead (soundSensor);
if (FirstTime == 1) {
spins(50000);
FirstTime = 0;
}
else {
if (statusSensor == 1) {
spins(50000);
}
else {
write(0,0,0,0);
}
}
}