April 2023 UFO

Be sure to bookmark a3d.fyi for quick access to UFO reveal posts.

Revenge of the 5th! Space theme.

Filamentcolors.xyz is a digital catalog of filament from around the globe, curated with the purpose of helping people find the perfect colors for their project. We print and photograph every filament under the same conditions, allowing users to compare different colors directly. We also measure the color and report this as a hex color, and use that to calculate complementary colors, similar filaments, and even similar colors in other materials to help users perfectly plan their projects. We’re a hobby project and always growing through filament donations and partnerships, so keep checking back to find your favorite filaments!

Congrats to Gary G. for winning the April 2023 Mothership Box!

This month's Mothership prize is a Kingroon KP3S 3.0 3D Printer Kit


  • Alien Lollipop
  • Trading Cards

Please login to view codes if you received this months UFO.

Subscriber @tsiolkovsky created a neat trading card holder for the top of the printer to hold the card for the sample you're printing with!
Download Card Holder

Filament Samples

All filament samples are at least 20 meters in length (actually more, I increased the length to eat up the extra filament being left behind on the rolls)

Those looking for a sample spooler, MadMonkey designed this one and it's been my favorite so far https://www.printables.com/model/36621-expandable-sample-spool-holder




Mini Digital Spirit Level

The inclinometer is a multi‑purpose measuring tool.

  • Protractor
  • Inclinometer
  • Spirits Level

Equipped with a magnetic bottom, large LCD screen and bubble level.

The digital inclinometer has a quick response to measured values and keeps high performance for wide measurement. Useful for 4 x 90° measuring range. Reading Value: 0.1°, Measurement Accuracy: 0.3°, Battery Type: 3V CR2032 battery (not included.), LCD Screen Size: Approx. 35 x 20mm / 1.4 x 0.8in

Similar On Amazon

Bonus Project!

+Nano version of the UFOs received an ESP32


I've done a Temp/Humidity sensor previously, but this one is a bit more advanced, as well as a bit more refined. Items included in project:
  • RTC DS1307 clock module
  • 3 x push button
  • on off button self recovery
  • LCD1602 I2C screen
  • dht-11 sensor
  • dc jack 5.5x2.5
  • power cable
  • 10 x 12" F to F Jumper
I apologize for the Instructable and components not being an exact match. Customs had the projects for 3 weeks and they arrived the Thursday before UFOs went out, so wasn't able to get a kit to DSK ahead of time. He has now updated models, code and instructions at the below link.
Get Files and Instructions

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