Adafruit Learning System Weekly Update: Lego Edition #AdafruitLearningSystem

This week on the Adafruit Learning System, we published a couple new guides, and updated a few more. Learn how to make a Green Goblin Pumpkin CPB Ornament, create Clue and MagTag pep talk generators, and more!

Favorite New Guide


This week my favorite new guide shows you how to build a Green Goblin pumpkin CPB ornament!

Build an LED ornament inspired by Spiderman’s Green goblin!

Use the built-in LEDs on the Circuit Playground Bluefruit and an additional NeoPixel ring on the back to illuminate on both sides of the ornament!

The 3D printed shell fits over our 6cm DIY ornament with a printed mount to hold the Circuit Playground Bluefruit and 16 NeoPixel ring.

Power Up Your Lego

With the release of the new Raspberry Pi Build HAT Lego Robotics add-on, I started digging around on ALS to see if we had many other Lego projects. Turns out there are quite a few Lego related projects on the Adafruit Learning System. Here are some of my favorites:

3D Printed Lego Tape

Cling bricks to windows without glue!

In this guide, we’ll show you how you can 3D print flexible lego strips. These strips are 3D printed with a rubber like material that allow it to cling to glass surfaces without any adhesives! The bottom of these strips are able adhere to glass using suction, so this allows you to build lego projects with lots of different bricks so you can make pretty cool scenes.

Lego Neon NeoPixel Sign with CircuitPython

Build a Neon-like sign with NeoPixels and CircuitPython

Build a smart DIY fume extractor with an Adafruit FunHouse and CircuitPython. Use a PWM fan and the EMC2101 controller to change the speed based on readings from an SPG30 air quality sensor.

Use CircuitPython libraries and ESP32-S2 to connect to WiFi and log sensor data to a feed and display it on a dashboard with Adafruit IO. Use the FunHouse’s built-in TFT to display bitmap graphics with fan speed and air quality. Use the built-in buttons to select options like choosing to log data. CircuitPython makes it easy to customize features, experiment with other hardware and quickly iterate.

The electronics are housed in a 3D printed enclosure that snap fits together. Use a carbon activated filter to adsorb smoke from solder fumes. The fan controller and air quality sensor are connect with STEMMA QT cables for a plug-and-play circuit. A mini fan mounted in front of the air quality sensor directs fumes for sampling and measuring. The ports on the FunHouse make it easy to power 5V peripheral.

Lego Crickit Rover

Make a two wheeled robot with Lego

Build a CRICKIT powered rover robot using LEGO pieces and 3D printed mounts! Learn how to use the Circuit Playground Express and the LEGO brick system to build a two wheeled robot. Use Microsoft MakeCode to program movements with interactive lights and sounds. LEGO is the breadboard equivalent to mechanical design. It’s modularity makes it perfect for prototyping robotics. With just two motors, an Adafruit CRICKIT and Circuit Playground Express board, you can quickly make a moving robot. It’s expandable and completely customizable with 3D printing!

ALS Deep Cut


With so many guides on the Adafruit Learning System, some amazing guides of years past get buried and lost. ALS Deep Cuts brings these guides back up to the surface. This week’s guide is from back in 2018.

Build a Bluetooth remote control for the Lego Droid Developer Kit

A short time ago in a very nearby galaxy (in 1999)…

                 Lego® added the Droid Developer Kit to 
           the Mindstorms robotic range. This included the
        Micro Scout brick, a simplified version of the earlier
    Scout brick with a single, bi-directional motor and a light
 sensor. The Micro Scout functionality includes control via the
                         Visible Light Link (VLL) protocol.

This project revitalises the Droid kit with a Bluetooth Low Energy (LE) remote control for the Micro Scout brick. A Feather M0 Bluefruit LE is used to receive commands from the Adafruit Bluefruit LE Connect app and send corresponding VLL commands to the brick using an LED. The app is available on both Android and iOS.

The code is implemented in CircuitPython.

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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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