Summary

Another ATX Bench Power Supply

This ATX PSU bench power supply combines some of the best features of other designs I found on Thingiverse : variable voltage unit, fuses, mini-voltmeters, USB,....

Features :

• Fixed 3.3 V, 5 V and 12 V terminals
• Variable voltage (0-12 V) terminal (from DPS5005 module)
• Two usb 5V ports
• Fuses on all + terminals
  • external for 3.3, 5, 12 and var.
  • internal in-line fuse for USB
• Bottom panel has a 'window' to allow you to read the ATX PSU specs.

The eight 3D printed parts for his unit :

• Top- and bottom-panels
• Front- and back panel
• 2 Left-side panels
• 2 Right-side panels

If your Right-side panel 01 is a little warped, you could print 4 extra little spacers and glue them on the inside (around the ventilator opening).

All parts are printable on small-platform printers, no supports needed.

Assemble using M3 x 10 mm. screws (conical shaped head). (32 pcs.)

You will need :

• DPS5005 Programmable Power Supply Module (here)
• Blue or red mini-voltmeters (4) (here)
• 12V USB adapter (here)
• 10 Ohm 10 Watt resistance
• Switch (here)
• 8 banana binding posts (4 red, 4 black) (here)
• 5 x 20 mm fuses (5) (here)
• 5 x 20 mm fuse-holders (4) (here)
• in-line 5 x20 mm fuse holder (1) (here)
• 2 leds (+ two 330 ohm resistors)
• 2 led holders (here)
• ATX 500W PSU with silent 12 cm ventilator and SATA, Molex connector (here)
• soldering iron and screwdriver, multimeter.

I used (part of) an aluminium heat sink from a broken icebox to mount the 10 Ohm 10W resistance on top of the ATX module (using some thermal silicone paste compound / thermal glue)

Update 15-07-19 : new version of front-panel V2

Enjoy !