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This low-profile, dual-channel power supply is designed to mount discreetly under your desk, providing quick access to fixed 12V and 5V rails for all your maker projects, LED strips, and microcontroller testing.
Features
- Dual Fixed Outputs: Stable 12V (up to 4A) and 5V (up to 8A) rails
- Integrated Monitoring: Dual digital LED displays for real-time voltage and current monitoring on both channels
- Versatile Mounting: Designed to be secured under a desk with four #4 screws, or used as a low-profile desktop unit
- Customizable Layout: I’ve provided three chassis options so you can place the Power Entry Module (AC Input) on the Rear, Left, or Right side to fit your specific cable management needs.
Bill of Materials (BOM)
To complete this build, you will need the following components:
- PSU: MEANWELL RD-85A
- Digital DC Voltmeter Ammeter Displays: https://www.amazon.com/dp/B0CQC6781P
- Power Entry Module: https://www.amazon.com/DEVMO-Printer-Switch-Circuit-Protection/dp/B0899ZHDNP
- Banana Jack Binding Posts: https://www.amazon.com/Connectors-Amplifier-Insulated-Terminals-Lkelyonewy/dp/B09LSTMJJ6
- 5x M3 heat-set inserts: https://www.mcmaster.com/94180A333/
- 5x M3 10mm flat head screws for bottom cover
- 2x M3 6mm flat head screws for MeanWell PSU
- Wood Screws: 4x #4 x 1/2 in. or #4 x 3/4 in. Phillips Flat Head Screws
Print Instructions
- Material: PETG, ABS, ASA or CF reinforced filament is recommended for warp resistance, though PLA will work for desk top applications
- Infill: 20-25% (Gyroid recommended for strength).
- Supports: Minimal supports may be needed for the front display cutouts depending on your printer's bridging capabilities.
- Orientation: As provided in the slicer file
Wiring
⚠️ Disclaimer
WARNING: ELECTRICAL HAZARD. This project involves wiring 120V/230V AC mains electricity. Incorrect wiring can lead to fire, injury, or death. By downloading and building this project, you acknowledge that you do so at your own risk. I claim no responsibility for blown fuses, damaged components, or any incidents resulting from the assembly or use of this device.
For Adjustable Bench Top version, see: https://makerworld.com/en/models/803816-dps5020-dps5015-power-supply-enclosure#profileId-744110
yashmulgaonkar
