CircuitPython driver for TM1638 Led & Key modules. Adapted to work on CircuitPython from MicroPython TM1638 LED Driver by mcauser https://github.com/mcauser/micropython-tm1638
Tested on Raspberry Pi Pico with CircuitPython 6.2
Copy the tm1638.py file to the board. Also copy the code below to code.py, using your favorite editor and file manager, or using Mu editor. The example assumes a TM1638 Led&Key module connected to a Raspberry Pi Pico (see next section)
"""CircuitPython TM1638 example"""
import tm1638
import time
import board
from digitalio import DigitalInOut, Direction
# TM1638 Keyboard & LED setup.
stb = DigitalInOut(board.GP21)
stb.direction = Direction.OUTPUT
clk = DigitalInOut(board.GP20)
clk.direction = Direction.OUTPUT
dio = DigitalInOut(board.GP19)
dio.direction = Direction.OUTPUT
kled = tm1638.TM1638(stb, clk, dio, brightness=2)
# blink all leds
for i in range(8):
kled.led(i, 1)
time.sleep(0.5)
kled.led(i, 0)
# display text
kled.show("PICO2021")
# change brightness
for i in range(5):
kled.brightness(i)
time.sleep(0.5)
kled.brightness(2)
time.sleep(0.5)
kled.clear()
# display number
kled.number(-1234567)
time.sleep(1.5)
kled.clear()
# led combinations
kled.leds(170)
time.sleep(0.5)
kled.leds(85)
time.sleep(0.5)
kled.leds(170)
time.sleep(0.5)
kled.leds(85)
time.sleep(0.5)
kled.clear()
# scroll text
kled.scroll("ABC DEF 123 456 789")
kled.clear()
# display temperature and humidity
kled.temperature(25)
kled.humidity(45)
time.sleep(1.5)
kled.clear()
# wait for a key press and activate corresponding led
while True:
kled.leds(kled.keys())| Raspberry Pi Pico | LED&KEY TM1638 Module |
|---|---|
| 3V3(OUT) - pin 36 | VCC |
| GND - pin 28 | GND |
| GP21 - pin 27 | STB |
| GP20 - pin 26 | CLK |
| GP19 - pin 25 | DIO |
Licensed under the MIT License.