Terminator T800 music effects ultrasonic sensor

T800 Terminator modification with motion detection, LED activation, musical track playback

Operation:

1) The HC-SR04 ultrasonic sensor detects a person passing by, with a default distance of 80 cm (detection distance is adjustable)
2) The two LEDs turn on gradually (gradual activation with adjustable timing)
3) Once the LEDs are fully on, the musical track stored on the YX5300 UART player begins to play
4) After a settable time, the LEDs fade out (gradual deactivation with adjustable timing)
5) After the LEDs turn off, everything resets
6) The cycle restarts from point 1

This is a remix of the model:

https://makerworld.com/it/models/1436143-t-800-head-for-a1mini-full-size-in-parts-no-stand#profileId-1494113

Some parts have been modified to house the control electronics for various components:

1- Arduino nano
https://www.amazon.it/dp/B0D7Q6BGW8?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

2- Adapter for Arduino
https://www.amazon.it/dp/B08T155GTY?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

3- Ultrasonic sensor
https://www.amazon.it/gp/product/B00W3GRUZC/ref=ox_sc_act_title_1?smid=ACVR5JKB028QH&th=1

4- MP3 player + SD card
https://www.amazon.it/dp/B07KFL1X4D?ref=ppx_yo2ov_dt_b_fed_asin_title

Note that the YX5300 module typically requires files to be in a folder named "01" and renamed as "001.mp3"

5- Amplifier
https://www.amazon.it/dp/B07XRCSS4B?ref=ppx_yo2ov_dt_b_fed_asin_title

If audio disturbances are detected due to power instability, connect a 1000uF capacitor between the PAM8403 power input VCC ➔ 5V GND ➔ GND, see photo

6- Speakers, I used these:
https://www.amazon.it/dp/B09PL6XFHC?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

I had purchased these for another project. To use them here, I had to adapt the side slots with a file. I recommend buying different speakers to avoid manual modifications

7- 3.5 jack
https://www.amazon.it/dp/B0C6M9W262?ref=ppx_yo2ov_dt_b_fed_asin_titleù

8- 9V battery
amazon.it/gp/product/B07NRNP7V1/ref=ox_sc_act_title_1?smid=A11IL2PNWYJU7H&psc=1

9- Mini Toggle Switch
https://www.amazon.it/dp/B0C3QZ4W6N?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

10- 9 Volt Battery Connector
https://www.amazon.it/gp/product/B0D7CVWJN7/ref=ox_sc_act_title_2?smid=A3RSAJ6PHJ8E3L&th=1

11- Cables and connectors for the various connections

I am attaching the 100% functional Arduino Nano sketch. Each line is described in detail, where you can adjust:

1-LED turn-on time
1-LED turn-off time
2-Music track duration
4-Wait times between actions
3-Person detection distance, etc