Brilliant Brick Prototyping

Have a rusty collection of protoboards wired together that would benefit from mechanical support? Working on putting together a robot and need to attach PCBAs without drilling holes, zipping a cable tie, or globing hot glue? Add some stud holes with [James Munns]’ Brick Mount! This isn’t the first time we’ve seen an interface between everyone’s favorite Nordic building system and circuitboards, but this implementation has the elegance we’ve come to expect from [James]’ software work.

4×8 Feather Medium protoboard

The project repository contains two things: a KiCad library with components for holes in standard patterns and sizes (1×1, 1×2, etc) and a series of protoboards made with those hole components. The protoboards feature a couple common elements; QUIIC connectors for easy chaining between them and holes in the middle or edges for easy mounting on studs. Some are intended to be carriers for Feather-format PCBAs (very convenient!) and others are primarily undifferentiated prototyping space. Of particular note is the “medium” Feather breakout seen to the left, which incorporates clever cutouts to make it easy to wires down under the board so it can be mounted flush against another board.

The thesis here is that getting custom PCBs fabricated is easier and less expensive than ever before. So easy and inexpensive that fabricating customized protoboard to use in one-off projects is cost-efficient enough to be worthwhile. Waste concerns aside this does seem like a great way to level up those temporary projects which find a more permanent home.

24 thoughts on “Brilliant Brick Prototyping

      1. Check out the Crazy Circuits system at It’s this idea but greatly expanded. We’ve been doing it since 2017 and all our parts are 100% open source. Our GitHub repo has a full step by step guide on designing your own components.

  1. Brick Mount

    Time for a catchy name

    Brix ‘n Match?


    Nordicboards (too many syllables?)




    Or we could go along with the “clothing/tool” theme that is so popular.
    (i.e. capes, hats, Phats, shields, …) codpiece? B^)

    Maybe I need a drink to help me think better,,, Caffeine?

  2. One may find that some boards fit between two vertical pieces and slot in between sets of studs facing each other, to make a rack. Whether you jam in the single thickness boards between the baseboard studs or use right angle or hinge blocks to do this is up to you.

    1. ive seen that before. see mindsensors. there was an old board that was a motor driver for vintage lego motors (pre power functions). it was meant to connect to the first gen nxt, but it was just an i2c interface and i ended up using it with an arduino instead.

  3. Cough cough… the open source Crazy Circuits system has been doing this exact same thing since 2017. We have a whole GitHub repo where we have dozens of parts made up for various components and microcontrollers, as well as a big KiCad write up on how to make your own. We use a 1/8th inch nylon conductive tape to connect components together in the LEGO environment.

    We have break out boards of Nanos, Teensy, Feather, Micro:Bit, and even a Pi Zero.

    Or we have boards and full educational kits available at and most major STEM websites.

    1. Hey! I’m the project author here, I hadn’t seen the Crazy Circuits boards or BrownDogGadgets before! As I mentioned on the project page, but I’ll definitely add a link now.

      Glad to see you already have something commercial (linked on a couple of the comment threads here already), so I can point folks your way!

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