$5 board eases ATX power supply connection to single board computers

Many people have ATX power supplies from older desktop PCs that they may want to reuse with Arduino boards, Raspberry Pi, or other single board computers.

It’s indeed possible to do so by trimming some cables and making a circuit to protect the board from over-voltage or over-current. But ZJ-012 adapter board offers a simpler solution with a 24-pin header for the ATX power supply, terminal blocks for connection to the target board, some fuses for protection, and a header to connect an on/off button.

ZJ-012 ATX Power Supply single board computerJZ-012 (also known as JZ-024) ATX power adapter board’s key features and specifications:

  • Power Input – 20-pin or 24-pin computer ATX power supply
  • Power output – 9-pin terminal block with +3.3V, +5V, -12V, +12V, +5V, GND with fuses for each power outputs
  • On/Off control – Toggle switch or header for external button/switch (shorted for power on)
  • Misc – Power indicator (red LED)
  • Dimensions – 70 x 63 x 20 mm
  • Temperature Range –25°C to 85°C
  • Humidity – 5%~95%RH

ATX power supply with terminal blocks 3.3V, 5V, 12VWith multiple voltage support, I suppose it could also be used to power a 3D printer and a Raspberry Pi running OctoPrint or Klipper for instance.

It’s also inexpensive, as I first found it on ICStation for about $5, but it can also be purchased on sites like Banggood or Aliexpress with the latter offering better deals for this particular board, as low as $2 plus shipping, which amounts to roughly $4-5 in total.

While looking at the subject I also noticed “Pod Bay 3″‘s mini ATX PSU II Raspberry Pi HAT designed to connect a desktop ATX power supply directly to the board. So that’s an option for a more integrated solution, but the price is quite higher starting at $26.45 on Tindie for a DIY kit.

Raspberry Pi Mini ATX adapter board HAT

Alternatively, if you’d prefer having the power supply to be housed in a case, it’s always possible to convert an ATX power supply into a bench power supply with some 3D printed parts.

Share this:

Support CNX Software! Donate via cryptocurrencies or become a Patron on Patreon

ROCK Pi 4C Plus
Notify of
The comment form collects your name, email and content to allow us keep track of the comments placed on the website. Please read and accept our website Terms and Privacy Policy to post a comment.
Weller PCB manufacturer