YAPBPS

Yet Another Parametric Bench Power Supply

A modular, fully parametric 3D-printable benchtop enclosure in OpenSCAD tailored for custom DC-DC buck/boost converters (SK200W, SK150C, and equivalents).

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Overview

YAPBPS bridges the gap between static bench enclosures and DIY versatility. It features an angled console profile, dynamic venting, an active clearance auditor, and a coordinate-driven placement engine to mount any connector on any panel.

Key Highlights

• Angled Console Profile: Optimal workbench viewing angles and dial ergonomics while keeping the top surface flat.
• Universal Matrix Placement: Position components on any face (Front_Slope, Front_Lip, Top, Rear, Right, Left) via percentage-based coordinates (U, V).
• Active Collision Auditing: Integrated 2D bounding-box validation detects and reports overlapping ports in the OpenSCAD console.
• Z-Dovetail Service Door: Hinge-free maintenance lid sliding along rear dovetails, secured by a single front M3 screw with an anti-flex stepped collar.
• Auto-Balance Rear Panel: Automatically distributes and centers rear-facing connectors.
• Parametric Venting: Panel-independent airflow patterns (hex, slots, diag_slots, chevron, louver, swirl, fan_radial, etc.).
• Integrated Chassis Infrastructure: Molded floor zip-tie anchors, anti-sag support pillar for USB-C trigger boards, and M3 standoffs for ideal-diode modules.

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Supported Hardware & Cutouts

Category	Component	Default Panel	Mount / Standards
Displays	Front Display Meter	Front_Slope	SK200W / SK150C (flush bezel counterbore)
Outputs	Banana Binding Posts	Front_Lip	Dual isolated 4mm (19.05 mm / 3/4" standard pitch)
	USB-A Output	Front_Lip	Bulkhead female socket
Inputs	XT60E-M / XT30E-M	Rear	Flanged panel mount with dual M3 screw anchors
	USB-C PD Trigger	Rear	Slotted port with retention cradle & floor rest
	DC 5.5 x 2.5 mm	Rear	Standard threaded barrel jack
	Pluggable Terminal	Rear	KF2EDG screw terminal block
	AC Mains Inlet	Rear	IEC 60320 C14 panel socket
	Anderson Powerpole	Rear	Dual 15A/30A/45A housing
Controls	Rocker Switch	Right	KCD1 rectangular switch (snap-fit)
	Push Button	Front_Lip	16mm metal latching/momentary LED button
	Potentiometer	Front_Lip	Standard rotary encoder / pot bore
	Status Indicator	Front_Lip	5mm panel-mount LED bezel
Utility	Circular Aviation	Right	GX12 / GX16 threaded plug
	Axial Fan	Rear	Parametric square fan bore + guard
	Keystone RJ45	Rear	Snap-in pass-through
	Fuse Holder	Rear	5x20 mm panel-mount screw cap

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Quick Start

Prerequisites

• OpenSCAD (v2021.01 or later)
• Python (v3.10+, required only for compiling single-file distributions)

Workflow

1. Clone the repository: {B}bash git clone https://github.com/camiu01/YAPBPS.git cd YAPBPS {B}

2. Open the project: Always open main.scad directly. Never launch modules from inside modules/. {B}bash openscad main.scad {B}

3. Configure parameters: In OpenSCAD, open Window > Customizer to tune dimensions, active cutouts, coordinate placements, and thermal patterns.

4. Verify design:

   • Press F5 to update the assembly preview.
   • Use preview_slide and preview_explode sliders to audit internal clearances and sliding tolerances.
   • Watch the console for layout errors: {B}text ECHO: "WARNING: Port overlap detected on Rear panel between [XT60E-M] and [DC_Jack]" {B}

5. (Optional) Bundle into single file: {B}bash python build.py {B}

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Manufacturing Guide

STL Export

1. Chassis: Set render_main_body = true and render_side_lid = false. Render (F6), then Export STL (F7) as YAPBPS_Chassis.stl.
2. Side Door: Set render_main_body = false and render_side_lid = true. Render (F6), then Export STL (F7) as YAPBPS_Lid.stl.

Recommended Slicer Settings

• Filament: PETG, ABS, or ASA (higher heat resistance near regulators than PLA).
• Wall Loops / Perimeters: 4 - 5 (keeps vent meshes, dovetails, and standoffs completely solid).
• Infill: 20% – 25% (Gyroid or Honeycomb).
• Supports:
  • Chassis: Organic/Tree supports for cutouts and connector ports.
  • Side Lid: None (prints flat on the bed).
• Surface Finish (Optional): Fuzzy Skin is completely optional and based on personal preference. If you prefer a textured matte finish, use Contour Only (suggested: thickness 0.1 mm, point distance 0.25 mm) to prevent altering the internal dovetail tolerances.

Assembly Hardware

• Lid Retention: 1x M3x8mm countersunk screw.
• Internal Standoffs: 4x M3 heat-set brass threaded inserts (OD: 4.2–4.6 mm).
• Cable Management: 2.5 mm nylon cable ties.

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Extending Ports & Vents

1. Duplicate modules/cutouts/ports/_TEMPLATE_port.scad or modules/vent/patterns/_TEMPLATE_vent.scad.
2. Center your cutout profile at [0, 0, 0].
3. Register the new shape in the respective aggregator under modules/.
4. Append the descriptor entry to ALL_PORTS_REGISTRY in modules/core_logic.scad and expose its UI flags in main.scad.
5. Run python build.py to regenerate single-file dist assets.

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License & Authors

Maintained by Camiu (@camiu01). Distributed under the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0).