SunFounder Thales Kit, Manual

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SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
Wiring
1. In general, this circuit is a combination of the circuits in the previous two lessons.
2. Confirm again that the breadboard power bus is not connected wrongly or short-circuited!
Code
When the program starts, the LED will turn off within 5 to 10 seconds. You need to press the button as fast as possible,
and the program will tell you what your reaction time is.
import machine
import utime
import urandom
led = machine . Pin( 15 , machine . Pin . OUT)
button = machine . Pin( 14 , machine . Pin . IN)
def button_press (pin):
button . irq(handler = None )
rection_time = utime . ticks_diff(utime . ticks_ms(), timer_light_off)
print ( "Your reaction time was " + str (rection_time) + " milliseconds!" )
led . value( 1 )
utime . sleep(urandom . uniform( 5 , 10 ))
led . value( 0 )
timer_light_off = utime . ticks_ms()
button . irq(trigger = machine . Pin . IRQ_RISING, handler = button_press)
60 Chapter 3. For MicroPython User