Ordering Splitflap v0.7
The instructions below will walk you through ordering all the parts (excluding common tools) needed to build a splitflap v0.7 display with 4 modules.

Ready to assemble? Jump ahead to +Splitflap Kit v0.5/v0.6 Assembly Instructions 

Please leave inline comments below if you have any questions or come across anything that looks incorrect!

If you are interested in building a display with more than 4 modules, please see the notes at the bottom of this document about how the controller PCBs can be chained together for up to 12 modules controlled by a single Arduino Uno. 

If you have any questions, please feel free to reach out to me (scottbez1 at gmail or just mention me @Scott B in a comment on this doc). Or, join the new Slack group, to discuss or ask questions from the wider split-flap community! (it’s still new, so it may be a bit quiet, but don’t be shy!)


Order laser-cut parts

There are many places you can get laser-cut parts, but I’ve personally used Ponoko and Elecrow for ordering shipped to the US with an easy online-only process. I’ve been using Ponoko for several years and they offer a lot of different material options and good quality, but recently I’ve found Elecrow’s laser-cutting service, which can be significantly cheaper with good quality (though very limited material options).

💡 Note: v0.7 laser-cut parts are not dimensionally compatible with older v0.6 or v0.5 modules! If you’re extending an older display, make sure to use the older v0.6 files archived at the bottom of this document rather than the newer v0.7 files linked here.


  • 1 module
  • 4 modules

  • Go to Ponoko and sign up for an account.
  • Upload the SVG file from above. Confirm the dimensions match the values above, and check that blue lines are set for “Cutting” and black fill is set for “Area Engraving” (or turn this off to skip engraved features)
  • Select a material - MDF or Acrylic are recommended — choose 3.0mm (0.12 inches) thickness. Make sure to check the material’s maximum size against the dimensions provided next to the file links above; some materials may be too small to order the 4x versions.

💡 Important note if ordering Matte 1-Side acrylic at Ponoko: you must immediately send special instructions to Ponoko after placing your order, requesting to have the design engraved on the glossy side. This will result in the design being correctly cut so the matte surface will be on the exterior of the display when assembled. From Ponoko support (as of 2021-05-13): 
  • The matte is [by default] cut with the matte side up (so engraving happens on this side as well).

  • If you would like to place an order and have us engrave on the glossy side, just reply to the order confirmation page with your request and we'll be sure to make note in the order details.


Elecrow will cut 5 copies of the design per order from “wood” (unspecified type), for $14.55 + shipping. I think you’d be hard-pressed to find a cheaper deal (but let me know if you do!).

From experience it appears to be a 3-ply construction, with thin veneers on the front and back and some kind of very lightweight wood core. The thickness came out slightly undersized, at ~2.8mm rather than 3mm as specified. The finish and material is not as nice as Ponoko’s MDF (my order had visible scorch marks near cuts), so keep that in mind when deciding.

  • Download the appropriate file:
  • 3mm acrylic: [not yet tested. If you try this, I’d recommend starting with the Ponoko 3mm acrylic file from above; let me know which file you used and how it turns out - under/oversized, etc and I will use that feedback to generate a recommended file in the future]