Martian.py

from m5stack import lcd
import machine, time

#lcd.compileFont('x12y20pxScanLine.c')

hexString="0123456789ABCDEF"
wordString="HOWALIVE"

lcd.clear()
lcd.setCursor(0, 0)
lcd.setColor(lcd.WHITE)

servo = machine.PWM(21)

servo.freq(500)
servo.duty(50)
time.sleep_ms(10000)

#lcd.font('x12y20pxScanLine.fon')
for index in range(len(wordString)):
    lcd.clear()
    lcd.setCursor(0, 0)
    lcd.print(wordString[0:index+1] + "\n\n")
    lcd.print(wordString[index] + "\n")
    hexValue = hex(ord(wordString[index]))
    lcd.print(hexValue)
    offset = 90 - 80 * int(hexValue[2],16) / 17 
    if offset >= 90:
        offset = 90
    if offset <= 20:
        offset = 20
    servo.duty(offset)
    print(offset)
    time.sleep_ms(2000)
    offset = 90 - 80 * int(hexValue[3],16) / 17
    if offset >= 90:
        offset = 90
    if offset <= 20:
        offset = 20
    servo.duty(offset)
    print(offset)
    time.sleep_ms(2000)
servo.deinit()