MiniOLED Unit

MiniOLED UNIT is a 0.42-inch I2C interface OLED screen unit, it’s a 72*40, monochrome white display.

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MiniOLEDUnit

UiFlow2 Example

Draw Text

Open the cores3_minioled_example.m5f2 project in UiFlow2.

This example displays the text “Mini” on the screen.

UiFlow2 Code Block:

example.png

Example output:

None

MicroPython Example

Draw Text

This example displays the text “Mini” on the screen.

MicroPython Code Block:

 1# SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
 2#
 3# SPDX-License-Identifier: MIT
 4
 5import os, sys, io
 6import M5
 7from M5 import *
 8from hardware import I2C
 9from hardware import Pin
10from unit import MiniOLEDUnit
11
12
13label0 = None
14label1 = None
15i2c0 = None
16minioled_0 = None
17
18
19def setup():
20    global label0, label1, i2c0, minioled_0
21
22    M5.begin()
23    Widgets.fillScreen(0x222222)
24    label0 = Widgets.Label("CoreS3", 127, 109, 1.0, 0xFFFFFF, 0x222222, Widgets.FONTS.DejaVu18)
25
26    i2c0 = I2C(0, scl=Pin(1), sda=Pin(2), freq=100000)
27    minioled_0 = MiniOLEDUnit(i2c0, 0x3C)
28    label1 = Widgets.Label(
29        "Mini", 15, 9, 1.0, 0xFFFFFF, 0x222222, Widgets.FONTS.DejaVu18, minioled_0
30    )
31
32
33def loop():
34    global label0, label1, i2c0, minioled_0
35    M5.update()
36
37
38if __name__ == "__main__":
39    try:
40        setup()
41        while True:
42            loop()
43    except (Exception, KeyboardInterrupt) as e:
44        try:
45            from utility import print_error_msg
46
47            print_error_msg(e)
48        except ImportError:
49            print("please update to latest firmware")

Example output:

None

API

class MiniOLEDUnit

class unit.minioled.MiniOLEDUnit(i2c, address=60)

Bases: object

Initialize the Mini OLED Unit.

Parameters:

  • i2c (I2C | PAHUBUnit) – The I2C bus the Mini OLED Unit is connected to.

  • address (int) – The I2C address of the Mini OLED Unit, default is 0x3C.

UiFlow2 Code Block:

init.png

MicroPython Code Block:

from unit import MiniOLEDUnit
minioled_0 = MiniOLEDUnit(i2c0, 0x3c)

MiniOLEDUnit class inherits Display class, See hardware.Display for more details.