| Arduino | Bluetooth |
| 5v | Vcc |
| Gnd | Gnd |
| RXD (pin0) | TXD |
| TXD (pin1) | RXD |
arduino code
analog -bluetooth
void setup()
{
Serial.begin(9600);
}
void loop()
{
int sensorValue = analogRead(A0);
float voltage = sensorValue * (5.0 / 1023.0);
Serial.println(voltage);
delay (300);
}
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