SunFounder Thales Kit, Manual

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SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
5. Insert the Button, connect one side of it to the GP16 pin, then use a 10K resistor to connect the same side and
the negative bus. Do not forget to connect the other side to the positive power bus.
Note:
The color ring of 220 ohm resistor is red, red, black, black and brown.
The color ring of the 10k ohm resistor is brown, black, black, red and brown.
Code
When the program is started, the traffic light will switch in the order of red for 5 seconds, yellow for 2 seconds, green
for 5 seconds, and yellow for 2 seconds. If we (pedestrians) press the button, the red LED will be extended to 15
seconds, which will give us more time to cross the road.
import machine
import utime
import _thread
led_red = machine . Pin( 15 , machine . Pin . OUT)
led_yellow = machine . Pin( 14 , machine . Pin . OUT)
led_green = machine . Pin( 13 , machine . Pin . OUT)
button = machine . Pin( 16 , machine . Pin . IN)
global button_status
button_status = 0
def button_thread ():
global button_status
while True :
if button . value() == 1 :
button_status = 1
_thread . start_new_thread(button_thread, ())
while True :
if button_status == 1 :
led_red . value( 1 )
utime . sleep( 10 )
global button_status
button_status = 0
led_red . value( 1 )
utime . sleep( 5 )
led_red . value( 0 )
led_yellow . value( 1 )
utime . sleep( 2 )
led_yellow . value( 0 )
led_green . value( 1 )
utime . sleep( 5 )
led_green . value( 0 )
led_yellow . value( 1 )
utime . sleep( 2 )
led_yellow . value( 0 )
3.4. Projects 65