• Part 1: Discovery of the hardware and firmware extraction
• Part 2: Planning the read of the external flash
• Part 3: Creating a Rust development environment
• Part 4: Dumping content of the external flash
• Part 5: Graphics extraction from the external ROM

The Anycubic Mono 4K is my first 3D printer. It's been quite a steep learning curve to print with resin, but it's really satisfying to make objects once the workflow is ironed out.

Here's the printer.

Here's an example of a printed object.

There are visible lines due to the lack of anti-aliasing support on the printer. Its LCD screen outputs only fully transparent, or fully opaque pixels, no gray-scale. Apparently, we have to wait for a firmware update, but I'd rather not wait.

• Replace the firmware of the printer, so we can implement the features we want. For example:
• Add anti-aliasing support
• Provide multiple exposure support for a given layer. This would be helpful to print exposure calibration objects. A bit like the R_E_R_F feature.
• Optimize print speed. During printing, The lift speed is a big deal. Too slow, and the print takes too long and my patience runs down. Too fast, and the print delaminates and it's trash. Perhaps we can detect the tensile pressure while lifting, or when the printed layer unstick from the FEP film to optimize printing speed
• Add a temperature control unit to keep the resin at temperature
• Accept USB sticks as usual, but also allow the printer to act like a device (USB OTG), and be controlled by a host.
• Write the new firmware purely in Rust!

• Part 1: Discovery of the hardware and firmware extraction
• Part 2: Planning the read of the external flash
• Part 3: Creating a Rust development environment
• Part 4: Dumping content of the external flash
• Part 5: Graphics extraction from the external ROM

• Datasheets: datasheet folder
• Original firmware: firmware folder
• UI images: /firmware/ui folder
• PCB photos: pcb folder
• Pin config: print_ports_config.py and port_config.txt
• Rust firmware: src folder