Mp3 Alarm
Make an alarm from your phone with the HC_RS501 motion sensor
Supplies
1.phone has mp3
2.motion sensor HC_RS501
3.transistor 2222 NPN
4.resistor 1k
5.switch ON/OFF
Connect the Wire From the Sensor to the Phone
-Connect the output pin of the HC_RS501 sensor with a 1k resistor to the transistor's B (base) pin, C (Collector) pin and E (Emitter) pin to the phone's music button.
-The switch is connected to the phone battery (image 1) and the other end is connected to the anode of the HC-RS501 diode. The remaining wire is connected to ground.
-Adjust the sensor alarm time to about 10 seconds.
-Choose a ringtone for about 15 seconds. Open the mp3 music player on your phone, press the music play button. Connect two wires C and E from the transistor to the music play button.
Connect Your Phone to Your Mp3 Player Via Bluetooth
Choose a bluetooth music player phone connected to a bluetooth mp3 player. So it can alarm remotely