Adafruit Industries, Essential service and business: NYC – Executive Order 202.6 - Read more.

Simple 3D Printed Adapter for Turning a Test Tube into an LED Light Bulb #LEDs #3Dprinting

Big Clive, who describes his channel as the trashiest electronics on YouTube, has mucked around before with making his own LED lamps. Now he has monkeyed with 3D design and printing for the first time to create a simple adapter that turns a test tube into an LED bulb.

As he points out, this is a decorative, ambient lamp, not proper room lighting.

The circuitry is a simple classic capacitive dropper and I ended up managing to fit in about 26 RGB slow colour changing straw-hat style LEDs. Note that it’s better to use the slow change RGB LEDs instead of the fast flashing ones as there will be a high open circuit voltage across a flashing LED while it’s not lit and that might damage it. You could also use standard LEDs for continuous illumination. The light only uses about 1W of power, so it’s more for decorative use than room lighting.

This was also Clive’s entrance into the world of openSCAD. He includes the openSCAD script he created which you can cut, paste, and tweak to your own purposes.

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.

Join 16,000+ makers on Adafruit’s Discord channels and be part of the community!

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more

CircuitPython – The easiest way to program microcontrollers –

Maker Business — 1,000 True Fans, how creators can sustain themselves in the digital age

Wearables — Augmented reality IRL

Electronics — Free ICs!

Biohacking — Vitamin-C + Gelatin for Accelerated Recovery

Python for Microcontrollers — Together we’ll make it… #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF @Adafruit

Adafruit IoT Monthly — Hack-Proof Garage Door Opener, The Internet of Things is Sending Us Back to the Middle Ages and More!

Microsoft MakeCode — MakeCode Powered Flowerpot!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.