from machine import Pin, Timer
import time

# Pin definitions  
microswitch_pin = Pin(1, Pin.IN, Pin.PULL_UP)  # Adjust the pin number as needed  
solenoid_pin = Pin(2, Pin.OUT)                 # Adjust the pin number as needed

# Variables  
dwell_time = 1000  # Dwell time in milliseconds (adjustable)

# Timer for dwell time  
dwell_timer = Timer(-1)

# Function to turn off the solenoid  
def turn_off_solenoid(timer):
    solenoid_pin.off()

# Main loop  
while True:
    if not microswitch_pin.value():  # Microswitch pressed  
        solenoid_pin.on()
        dwell_timer.init(period=dwell_time, mode=Timer.ONE_SHOT, callback=turn_off_solenoid)
        # Wait until the microswitch is released to avoid re-triggering  
        while not microswitch_pin.value():
            time.sleep_ms(10)
        time.sleep_ms(200)  # Debounce delay

    time.sleep_ms(50)  # Short delay to avoid button bounce