from machine import Pin, I2C
import utime
from ssd1306 import SSD1306_I2C

WIDTH = 128
HEIGHT = 64
pot = machine.ADC(0)
i2c = I2C(0, scl = Pin(1), sda = Pin(0), freq = 400000)
oled = SSD1306_I2C(128, 64, i2c)

while True:
    a_val = pot.read_u16()
    v_read=round(3*a_val/65535,2)
    print(v_read)
    utime.sleep(0.1)
    oled.text("Voltage", 0,0)
    oled.text(str(v_read)+"V", 0,20)
    oled.show()