https://github.com/wjdp/micropython-lcd

:pager: Class for controlling the HD44780 from a micropython pyboard.
https://github.com/wjdp/micropython-lcd

Last synced: 3 months ago
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:pager: Class for controlling the HD44780 from a micropython pyboard.

• Host: GitHub
• URL: https://github.com/wjdp/micropython-lcd
• Owner: wjdp
• Created: 2014-10-22T18:25:38.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2014-10-27T16:06:41.000Z (about 10 years ago)
• Last Synced: 2024-04-29T11:33:58.166Z (6 months ago)
• Language: Python
• Homepage:
• Size: 141 KB
• Stars: 19
• Watchers: 7
• Forks: 10
• Open Issues: 3
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-micropython - micropython-lcd - Class for controlling the HD44780 from a MicroPython Pyboard. (Libraries / Display)

README

        
# micropython-lcd

A simple class for controlling the HD44780 in 4 bit mode with the micropython

pyboard.

There are **no external dependences**, the only module we use is the pyboard's

`pyb`.

Micropython Forum thread: http://forum.micropython.org/viewtopic.php?f=2&t=354

## Usage

```

import pyb

from lcd import HD44780

lcd = HD44780()

lcd.PINS = ['Y1','Y2','Y3','Y4','Y5','Y6']

lcd.init()

lcd.set_line(0) # First line

lcd.set_string("ABCDEFGHIJKLMNOP") # Send a string

lcd.set_line(1) # Second line

lcd.set_string("1234567890123456") # Again

pyb.delay(3000) # 3 second delay

lcd.clear() # Clear the display

```

## Pinout

Hookup your LCD like the following.

![Pinout photo][pinout]

|Pin |Code    |Description         |Do what with it                     |

|----|--------|--------------------|------------------------------------|

|1   |VSS     |GND                 |Ground it                           |

|2   |VDD     |+5V                 |5V please                           |

|3   |V0      |Contrast (0-5V)*    |Stick to 0V if you don't have a pot |

|4   |RS      |Register select     |Connect to pyboard, 0 in array      |

|5   |R/W     |Read/write          |Ground it                           |

|6   |E       |Enable              |Connect to pyboard, 1 in array      |

|7   |DB0     |Data Bit 0          |Unused                              |

|8   |DB1     |Data Bit 1          |Unused                              |

|9   |DB2     |Data Bit 2          |Unused                              |

|10  |DB3     |Data Bit 3          |Unused                              |

|11  |DB4     |Data Bit 4          |Connect to pyboard, 2 in array      |

|12  |DB5     |Data Bit 5          |Connect to pyboard, 3 in array      |

|13  |DB6     |Data Bit 6          |Connect to pyboard, 4 in array      |

|14  |DB7     |Data Bit 7          |Connect to pyboard, 5 in array      |

|15  |A       |Backlight +someV    |My display is LED, I use 3.3V       |

|16  |K       |Backlight GND       |Ground it                           |

Then the pinout array looks like this

    PINS = ['Y1','Y2','Y3','Y4','Y5','Y6']

[pinout]:http://cdn.instructables.com/FMC/PZRT/G8LWOHW9/FMCPZRTG8LWOHW9.MEDIUM.jpg