from machine import Pin, ADC, I2C
import ssd1306

i2c = I2C(0, scl=Pin(22), sda=Pin(21))  
oled = ssd1306.SSD1306_I2C(128, 64, i2c) 

pot = ADC(Pin(34))  
pot.atten(ADC.ATTN_11DB)  

while True:
    oled.fill(0)  
    valor = pot.read() 
    largura = int((valor / 4095) * 128)  
    
    for x in range(largura):  
        for y in range(32, 42):  
            oled.pixel(x, y, 1)  

    oled.text(f"Valor: {valor}", 0, 0)  
    oled.show()