Epd driver revb

2.9-inch raw e-paper driver

This directory contains a standalone 3.3V driver for the purchased 2.9-inch 296×128 black/white/red FPC-A005 raw panel. Rev B assumes the panel is electrically compatible with Good Display GDEY029Z94/SSD1680A and follows that panel's reference circuit.

Use Rev B

Open epd-driver-revb.kicad_pro in KiCad. The Rev B schematic is the electrical source of truth and currently passes ERC with zero errors and zero warnings.

The older epd-driver-breakout.* Rev A files have been removed to prevent opening the wrong project. Do not restore, fabricate, or continue routing Rev A: its boost values and Si1308EDL pin numbering do not match the selected panel reference design.

Files

• epd-driver-revb.kicad_sch: reviewed Rev B schematic.
• epd-driver-revb.kicad_pro: KiCad project settings.
• epd-driver-revb-schematic.pdf: read-only schematic preview.
• epd-driver-revb-erc.rpt: latest ERC report.
• epd-driver-revb.net.xml: exported netlist used by the automated assertions.
• epd-driver-revb.kicad_pcb: routed Rev B board source.
• bom-revb.csv: Rev B parts and ratings.
• REV-B-VALIDATION.md: pin mapping, corrections, design checks and remaining physical checks.
• epd-driver-local.pretty/: project-local connector and inductor footprints.
• SamacSys_Parts.pretty/: project-local compatibility aliases for legacy SamacSys footprint names that KiCad may retain in an older editor session.
• manufacturing/: dated Gerber, drill and DRC production outputs.
• archive/rev-a/: obsolete Rev A records and one-off conversion scripts; never use these files for fabrication.
• reference/: unmodified BSD-3-Clause Gulu source files.

PCB status

Rev B has been placed and routed. The C16 reference position has been adjusted in the PCB source to address the one silkscreen-overlap warning in the dated manufacturing report. KiCad DRC has not yet been rerun after that edit, so regenerate and validate the manufacturing package before treating it as a fabrication release.

When the schematic changes, open the .kicad_pro project and use Tools → Update PCB from Schematic. Do not copy tracks or net assignments from archived Rev A files.

Host connector J2

J2 is a 2×5, 2.54 mm through-hole header. Pin 1 is square.

Keep the prototype cable short and begin at 1–2 MHz SPI. Never feed 5V into J2.

Required physical check

The electrical pinout is high-confidence, but the FPC contact direction cannot be proven from the model marking alone. Before ordering, confirm the panel's exposed-contact side against the rear-entry Molex connector and print the connector area at 1:1 scale.