QuinLED-Dig-Octa System

Lots of projects need power, especially LEDs! For this I have designed several powerboards which can be used to distribute and safely use the required power.

Currently the power-5 is only available in a “normal” version and not a HC (High Current) version.

[board shot]

[board shot with connected cables]

Design Goal

The power-5 is built around 12x 5.08mm pluggable output terminals divided over 2 sides. The power-5 in the series of powerboards has been specifically designed to allow for a stackable form factor which means that all output ports and fuses can still be reached even when multiple powerboards are stacked on top of each other.

All input and output terminals are equipped with individual fuse sockets allowing you to select the individual value fuse per output terminal.

The normal version of the power-5 has 3x 9.5mm barrier terminal blocks for input of power allowing for connecting up to 3x parallel wires from a single power supply to minimize voltage drop between the power supply and the powerboard.

Advised Power Supply

This board is ideally suited to be used with a Meanwell LRS-350-5 (60Amps @ 5v) or LRS-600-12 (50Amps @ 12v) power supply.

*Connecting multiple power supplies to a single powerboard is not allowed, if you wish to use multiple power supplies (even with different voltages) this is allowed within a stack so will require multiple boards.


  • 3x 9.5mm “barrier block” input terminals for both positive and negative
    • Allows power input wires using
      • Bare wire
        • Also when soldered (not recommended)
      • Wires with crimped on wire ferrules
      • Wires with crimped on fork style crimps (preferred)
    • With the right style fork crimps allows for up 3x 6AWG input wires
  • Board recommended max 50Amp continuous load total
    • Fore more detailed power handling rules please see the following article
  • 12x 5.08mm pluggable output terminals
    • Allows up to 14AWG/2.0mm2 cable with ferrule
    • Has both + and – on single connector
    • Fuse socket per output
    • Max 10Amps fuse recommended
  • 5v-24v capable
  • “Broken Fuse” light per output
    • Custom independent “constant brightness” circuit
  • Onboard capacitors
    • Features 2x 1500uF 35v big capacitors
      • Smooths high transient loads and voltage spikes
    • Per output 1uF 50v capacitor
      • Provides noise filtering on output ports
  • Onboard Voltage display
    • Shows actual voltage including potential voltage drop
    • Easy to identify voltage of powerboard in a mixed voltage stack!
  • 4x M3 mounting holes
    • Connected to GND


  • Equipped with QPowerPost feature
    • Allows sharing power from powerboard to brainboard stack
      • Output only
    • Fully protected (Max 1.5Amps out, PTC auto-reset fuse)
    • 5x M2.5 screw holes
      • Outer 4x GND
      • Inner 1x VCC
  • Extra 1x 5.08mm pluggable terminal
    • Provides VCC and GND out
    • Protected against input and max 1.5Amps (PTC auto-reset fuse) current
    • Ideal for hooking up brainboard if you do not wish to use QPowerPost

Suggested handling capabilities

Please see this dedicated article for the power handling capabilities and suggestions.