https://github.com/arikb/LKM1638

JY-LKM1638 board driver library for Micropython / WiPy
https://github.com/arikb/LKM1638

Last synced: about 16 hours ago
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JY-LKM1638 board driver library for Micropython / WiPy

• Host: GitHub
• URL: https://github.com/arikb/LKM1638
• Owner: arikb
• License: gpl-3.0
• Created: 2016-07-07T12:04:45.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-07-07T12:17:53.000Z (over 8 years ago)
• Last Synced: 2024-04-22T12:34:17.111Z (7 months ago)
• Language: Python
• Size: 18.6 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-mpython - LKM1638 - Driver for JY-LKM1638 displays based on TM1638 controller. (精选驱动库 / 显示类)
• awesome-micropython - LKM1638 - Driver for JY-LKM1638 displays based on TM1638 controller. (Libraries / Display)

README

        
# LKM1638

JY-LKM1638 board driver library for Micropython / WiPy

Code has been written from scratch by me:

Arik Baratz 

but was HEAVILY inspired by the Arduino library by Ricardo Batista:

https://github.com/rjbatista/tm1638-library

This program is free software: you can redistribute it and/or modify

it under the terms of the version 3 GNU General Public License as

published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program.  If not, see http://www.gnu.org/licenses/

## Usage:

	from machine import Pin

	from LKM1638 import LKM1638, LED_RED, LED_NONE

	display = LKM1638(Pin.board.GP8, Pin.board.GP30, Pin.board.GP31)

	display.setup(True, 7)

	n = 0                 

	while True:

    	display.print_number(n, 16)

    	n+=1234

    

    	for i, button in enumerate(display.get_buttons()):

    	    if button:

        	    display.set_led(i, LED_RED)

     	   else:

        	    display.set_led(i, LED_NONE)

## WARNING ##

The JY-LKM1638 display is a 5v CMOS platform. This code has been tested on

WiPi - a 3.3v platform. While the diaplay can accept 3.3v input, WiPy cannot

accept a 5v input, which can happen on the DIO control.

I've used a simple bidirectional level shifter, described here:

http://electronics.stackexchange.com/a/97892/116011

This level shifter already has pull-ups on both ends, so I have configured

DIO as an open drain output without a pull-up. If your hardware differs, you

would have to change it. Note that it's reinitialised in the _recv method.