micro:bit開發板
I2C Address
| PCF8574 | PCF8574A |
| 0x27 | 0x3F |
- 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:
| microbit | LCD1602 |
| 5V | VCC |
| GND | GND |
| P19/SCL | SCL |
| P20/SDA | SDA |
LCD1602a vcc 3.3V
吉哥的makecode 積木 https://github.com/lioujj/pxt-lcd1602