MicroPython TM1640 LED Matrix

A MicroPython library for a LED matrix modules using the TM1740 LED driver.

Installation

Using mip via mpremote:

$ mpremote mip install github:mcauser/micropython-tm1640

Using mip directly on a WiFi capable board:

>>> import mip
>>> mip.install("github:mcauser/micropython-tm1640")

Manual installation:

Copy tm1640.py to the root directory of your device.

Examples

Basic usage

import tm1640
from machine import Pin
tm = tm1640.TM1640(clk=Pin(14), dio=Pin(13))

# line from bottom left to top right
tm.write([1, 2, 4, 8, 16, 32, 64, 128])

# all on
tm.write([255, 255, 255, 255, 255, 255, 255, 255])

# all off
tm.write([0, 0, 0, 0, 0, 0, 0, 0])

# all LEDs dim
tm.brightness(1)

# all LEDs bright
tm.brightness(7)

# the number 3
tm.write([0b00000000, 0b00011110, 0b00110011, 0b00110000, 0b00011100, 0b00110000, 0b00110011, 0b00011110])

# cross
tm.write(b'\x81\x42\x24\x18\x18\x24\x42\x81')

# squares
tm.write([255, 129, 189, 165, 165, 189, 129, 255])

# 50% on
tm.write_int(0x55aa55aa55aa55aa)

For more detailed examples, see

Modules

• WeMos D1 Mini
• WeMos Matrix LED Shield
• DIY More MatrixLED Shield for D1 Mini
• Dual Base for WeMos D1 Mini

Connections

CLK and DIO are bit-banged. You can use any GPIO.

TM1640 LED Matrix	WeMos D1 Mini
CLK	D5 (GPIO14)
DIO	D7 (GPIO13)
VCC	3V3/5V
GND	G

Links

• WeMos D1 Mini
• micropython.org
• TM1640 datasheet
• Titan Micro TM1640 product page
• MicroPython framebuf

License

Licensed under the MIT License.