Logic Level Converter (4-ch) with a Raspberry Pi Pico

// Logic Level Converter (4-ch) on Raspberry Pi Pico: wiring and a free simulation at https://www.tinkered.ai/components/logic-level-converter/raspberry-pi-pico
#include <Arduino.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
const int TRIG = 14, ECHO = 15;   // through channels 3 and 4

void setup() {
  Serial.begin(115200);
  Wire.begin();                   // GP4 SDA, GP5 SCL, through channels 1 and 2
  lcd.init();                     // the library's entry point: starts Wire and the 16x2 display
  lcd.backlight();
  lcd.print("3V3 <-> 5V ok");
  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);
}

void loop() {
  digitalWrite(TRIG, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG, LOW);
  float cm = pulseIn(ECHO, HIGH, 30000) / 58.0;
  lcd.setCursor(0, 1);
  lcd.print("Dist ");
  lcd.print(cm, 1);
  lcd.print(" cm   ");
  Serial.println(cm, 1);
  delay(200);
}