PiChart - Tiny Dashboard Charts for MicroPython

PiChart is a lightweight library for creating charts, cards, and image tiles on MicroPython displays, optimized for devices like the Raspberry Pi Pico with Pimoroni displays. Plot data as bars, lines, or points, display text cards, or show JPEG images in a customizable grid layout.

Features

• Bar, line, and point chart types
• Text cards for simple info displays
• JPEG image tiles with borders
• Grid-based container for layout management
• Customizable colors, sizes, and display options

Requirements

• MicroPython firmware (e.g., Pimoroni’s build with jpegdec)
• A compatible display (e.g., Pico Display Pack)
• Hardware: Raspberry Pi Pico or similar MicroPython device

Installation

1. Copy pichart.py to your MicroPython device using a tool like Thonny or rshell.
2. Ensure your MicroPython firmware includes jpegdec (included in Pimoroni’s builds).

Quick Start

from pichart import Chart, Container
from picographics import PicoGraphics, DISPLAY_PICO_DISPLAY

# Set up display
display = PicoGraphics(display=DISPLAY_PICO_DISPLAY)

# Create a chart
chart = Chart(display, title="Temp", values=[20, 25, 22, 28])
chart.x = 10
chart.y = 10
chart.width = 220
chart.height = 120
chart.data_colour = {'red': 255, 'green': 0, 'blue': 0}  # Red bars

# Add to container and draw
container = Container(display)
container.add_chart(chart)
container.update()

Documentation

See docs/ for detailed guides:

• User Guide: Full usage instructions
• API Reference: Class and method details
• Examples: More code samples

License

MIT License - See LICENSE for details.

Contributing

Contributions welcome! See CONTRIBUTING.md for guidelines.