from machine import Pin, I2C
import ssd1306

from machine import Pin, I2C
import ssd1306
import time

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


x, y = 0, 32  
dire = 1   

while True:
    oled.fill(0)  
    oled.pixel(x, y, 1)  
    oled.show() 
    

    x = x + dire
    if x == 127 or x == 0: 
        dire *= -1
    
    time.sleep(0.05)