import machine
from machine import Pin, SoftI2C
from machine import Pin,ADC
from lcd_api import LcdApi
from i2c_lcd import I2cLcd
 
 
I2C_ADDR = 0x27
totalRows = 2
totalColumns = 16
 
i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=10000)    
 
lcd = I2cLcd(i2c, I2C_ADDR, totalRows, totalColumns)
pot=ADC(Pin(34))
potwert_OLD=4096
while True:
    potwert=pot.read()
    potwert=int(potwert/273)
    if potwert!=potwert_OLD:
        lcd.clear()
        lcd.move_to(potwert, 0)
        lcd.putstr("*")
        potwert_OLD=potwert