0

Tip: Power Supply Labels

label12v

It’s convenient that the 5.5/2.1 mm center-positive DC connector is nearly ubiquitous among DIY electronics. On the other hand, the “whoops I grabbed the wrong supply and killed my LED strip” tragedy is almost a weekly occurrence in the forums. I’ve done it too. They all look the same.

You don’t need a fancy labeler for this (but they’re fun!). Tape will do. Or bread clips. Whatever, avoid the Magic Blue Smoke Monster and label all your power supplies one way or another.


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 code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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 12,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? The Electronics Show and Tell with Google Hangouts On-Air 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 https://www.instagram.com/adafruit/


Maker Business — Trade war rolls on, effects will have lasting implications

Wearables — Block the light

Electronics — Stay disciplined with ERC

Biohacking — Focus Building Meditation with Michael Taft

Python for Microcontrollers — Consumers Should Immediately… Python the Circuit! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit

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



5 Comments

  1. Sharpie Markers – the metallic “color”. Or “Paint Pens”.

    When I get a new supply, I write what it went to (XYZ phone, RasPi, etc) on the “box” part of the supply and/or the voltage – often on the plug itself, or something to identify it

  2. Second vote for metallic Sharpies. I write the voltage and current outputs on the wall wart portion of the supply.

  3. Also handy to indicate the rated current to avoid using a 350mA wart for a device that will draw 1A.

  4. What TZ said about including the data on which device the power supply originally belongs with. Since so many of the supplies are labeled with the name of some OEM power supply manufacturer, rather than anything that matches what it attaches to!

  5. Maybe a polarity note at the wire end as well? One side could say “12V,” and the other “tip +” or whatever your wallwart is.

Sorry, the comment form is closed at this time.