📟 RP2040-LCD-0.96: Modular MicroPython Implementation

RP2040-LCD-0.96 is a professional-grade library framework for the integrated Waveshare 0.96" display board. This repository provides a Modular Driver Architecture, moving away from factory "all-in-one" scripts to establish a scalable environment for real-time robotic telemetry.

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🚀 Engineering Objective: Native Integration

The RP2040-LCD-0.96 is a compact, high-density development board, but factory support is often locked into monolithic CircuitPython scripts. For robotics applications requiring low-level hardware control, this introduces unnecessary overhead. I have engineered this framework to bridge the gap: providing a stable MicroPython UF2 environment and a decoupled ST7735 driver. This allows the RP2040 to act as a high-speed telemetry node, utilizing hardware SPI to drive the 160x80 IPS panel with precision and REPL accessibility.

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✨ Key Technical Features

• MicroPython Native Implementation: Optimized for the standard Pico ecosystem, facilitating shared codebases across robotics hardware.
• Modular Driver Stack: Display initialization (MADCTL, COLMOD) is isolated from application logic, allowing for clean import architectures.
• Hardware SPI Optimization: Leverages the RP2040's native SPI peripherals to maximize bus frequency for 65K color rendering.
• BOOTSEL Recovery Workflow: Specific protocols for wiping factory demo-loops and restoring serial control via Thonny.
• RGB565 Asset Compatibility: Fully compatible with 16-bit color mapping for high-contrast telemetry displays.

🛠️ Hardware Stack & Specs

• MCU: Raspberry Pi Pico (RP2040 Dual-core Cortex M0+).
• Display: 0.96-inch IPS LCD, 160×80 resolution (ST7735).
• Clock Frequency: Standard 133MHz (Overclockable for high-FPS rendering).
• Validated Firmware: pico_micropython_20210121.uf2 for guaranteed LCD clock stability.

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🔌 System Logic & Deployment

Recovering Serial Access

Out-of-the-box, these boards often execute a non-interruptible loop. This repository provides the tools to perform a forced Flash Wipe:

1. Enter BOOTSEL mode.
2. Flash the custom MicroPython UF2.
3. Establish 115200 baud REPL communication.

Modular Register Mapping

Instead of baking registers into your main.py, the driver logic is handled by:

1. The Core Module: Manages the SPI bus and ST7735 command set.
2. The Telemetry Script: Inherits the driver class, focusing purely on data visualization and sensor input.

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📐 Repository Structure

Folder / File	Technical Description
/modules	Decoupled display drivers (ST7735 logic).
/examples	SPI bus verification and geometric rendering sweeps.
/firmware	Verified MicroPython UF2 binaries for display stability.
WS_0-96_160x80_MIN.py	Lightweight register initialization for rapid prototyping.
graphicstest.py	Full RGB565 stress-test for visual debugging.

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⚡ Quick Start

1. Firmware Deployment: Drop the included .uf2 into the RP2040 mass-storage drive.
2. Filesystem Setup: Upload the /modules folder to the board's root directory.
3. Execution: Run MIN.py to verify the SPI handshaking and display panel initialization.

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© 2026 MatsRobot | Licensed under the MIT License