19. LCD1602a

osoyoo

I2C Address

• PCF8574: 39
• PCF8574A: 63

API

• LcdInit(Addr: number)
  Initial LCD
  Addr: I2C Address.
• ShowNumber(n: number, x: number, y: number)
  show a number in LCD at given position.
  n: number will be show
  x: is LCD column position, [0 – 15]
  y: is LCD row position, [0 – 1]
• ShowString(s: string, x: number, y: number)
  show a string in LCD at given position.
  s: string will be show
  x: is LCD column position, [0 – 15]
  y: is LCD row position, [0 – 1]
• on()
  turn on LCD
• off()
  turn off LCD
• clear()
  clear LCD content
• BacklightOn()
  turn on LCD backlight
• BacklightOff()
  turn off LCD backlight
• shl() shift left screen 
• shr() shift right screen

Connection for flame sensor:

LCD1602a vcc 3.3V

吉哥的makecode 積木 https://github.com/lioujj/pxt-lcd1602