SunFounder Thales Kit, Manual

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SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
Wiring
1. Connect VCC of LCD to VBUS of Pico.
2. Connect the GND of LCD to the GND of Pico.
3. Connect SDA of LCD to GP0 of Pico, which is I2C0 SDA.
4. Connect SCL of LCD to GP1 of Pico, which is I2C0 SCL.
Code
The following is the library of lcd1602 packaged by Sunfounder.
You need to save it in Pico, name it lcd1602.py and use it as a library.
import machine
import time
class LCD ():
def __init__ ( self , addr = 0x27 , blen = 1 ):
sda = machine . Pin( 0 )
scl = machine . Pin( 1 )
self . bus = machine . I2C( 0 ,sda = sda, scl = scl, freq = 400000 )
#print(self.bus.scan())
self . addr = addr
self . blen = blen
self . send_command( 0x33 ) # Must initialize to 8-line mode at first
time . sleep( 0.005 )
self . send_command( 0x32 ) # Then initialize to 4-line mode
time . sleep( 0.005 )
self . send_command( 0x28 ) # 2 Lines & 5*7 dots
time . sleep( 0.005 )
self . send_command( 0x0C ) # Enable display without cursor
time . sleep( 0.005 )
self . send_command( 0x01 ) # Clear Screen
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102 Chapter 3. For MicroPython User