Hello,

I am trying to display sensor values to OLED ssd1306 using Micropython. “Hello World” example from MicroPython works. However, when i run “oled.text” in a while loop, i get the some values as solid blocks , not numbers. Below is my code :

while i < 50 :
water_sensor_value = 3.3*(water_sensor.read())/4095

pwr9v_value = 3.3*((pwr9v.read())/4095)

print ("i = ", i , "water sens =", water_sensor_value, "pwr9v = ", pwr9v_value)

water_sensor_str = 'wt_sn = ' + str(water_sensor_value) + "X"
pwr_sensor_str = "9V div =" + str(pwr9v_value)
count_str = "i = " + str(i) + 'X'

oled.text(water_sensor_str, 0, 0)
oled.text(pwr_sensor_str, 0, 10)
oled.text(count_str, 0, 20)

oled.show()
i = i + 1

#with delay of 2 power reading is more stable
sleep (2)

here is how it looks:

https://imgur.com/a/TlPLSRK#gjwGeHK

Any suggestions are appreciated.

Thanks