Collection of python libraries, arduino sketches and documentation about driving mobitec flipdot displays using serial communication.
This library is tested with a MAX485 module for converting the TTL serial signals to RS-485. Serial communication has been tested and confirmed working using: Raspberry Pi (see hookup diagram below), USB-to-TTL dongles with CP2102 chipsets, and Wemos D1 mini with CH340 chipsets.
The pinout from the mobitec flipdot display is:
- Red — +24V
- Black — Ground
- White — RS-485 D+ (A)
- Green — RS-485 D- (B)
See protocol.md documentation for more info about the mobitec protocol.
To use this project, you'll need to do the following:
- Clone the repository:
cd ~
git clone https://github.com/Nosen92/maskin-flipdot
cd maskin-flipdot
- Install the required dependencies:
pip install -r requirements.txt
The mobitec.py file contains a class that handles all communication using the mobitec protocol. The methods for driving the display include:
print_text("Example")Prints a text string.print_image(standard_m)Prints an image.draw_pixel(x, y)Flips a single pixel at the coordinates (x, y).display()Updates the display (applies all commands in buffer).clear_display()Clears the memory buffers.set_font(13px_wide)Changes the selected font when writing text.set_cursor(x, y)Moves the position where the text will be printed.
See example files for further guidance or reference.
If you would like to contribute to this project, please open an issue or submit a pull request on GitHub.
This project is licensed under the MIT License. See the LICENSE file for more information.
The controller board inside the sign is documented in prefixFelix's controllers.md.