Organize projects with these modular Lego base plates for STEMMA boards! These 3d printed holders feature built-in standoffs for press fitting the PCBs. 

It’s a nice way to secure them without screws or adhesives.

STEMMA board and sensors allow you to plug-and-play together various devices and accessories, without any soldering!

In this project, we'll build Lego base plates for all of our STEMMA boards! We designed several different sizes to to fit all of our boards!

On the bottom are tubes that are designed to fit onto LEGO compatible bricks.

The clearance in between the PCB and holder allow space for components on the bottom of the PCB.

We also designed lego plates for a couple of components like Feather boards, battery pockets and a slide switch.

All of the base plates print will out any supports and the built-in pegs allow board to simply snap to place without any additional hardware.

Parts

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Video of a Adafruit FeatherWing OLED - 128x64 OLED Add-on For Feather - STEMMA QT / Qwiic connected to a temp and humidity sensor. Display reads "Adafruit" and various Temp and Humidity measures.
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Double prototyping feather wing PCB with socket headers installed
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Angled shot of a Adafruit Feather M4 Express.
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This guide was first published on Sep 09, 2020. It was last updated on Mar 08, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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