This project demonstrates how to read analog vibration data from an SW420 vibration sensor using the ADC pin on the ESP8266 board.
The analog output from the SW420 is connected to the A0 pin and read continuously using MicroPython, printing the vibration level on the Thonny IDE console.

🔹 The SW420 sensor’s output voltage changes when vibration or shock is detected.
🔹 Connect its DO pin to A0 for analog voltage measurement.

# A0 = SW420 Vibration Sensor

import machine
from machine import ADC
import utime

SW420 = machine.ADC(0)
# 10-bit ADC in ESP8266: 0–1023 (0–1V input range)

while True:
    adc_value = SW420.read()
    print('SW420 ADC Value:', adc_value)
    utime.sleep_ms(200)