Voting resources, early voting, and poll worker information - VOTE. ... Adafruit is open and shipping.

Fun with ultracapacitors‬‏

Peter writes in…

It’s a demonstration of supercapacitors, while explaining ESR, Stored energy, and some other stuff. IT’s Educational AND has sparks flying, what’s not to like?

Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know –

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 24,000+ 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 7pm 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 — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Rub’n’buff

Electronics — Multimeter Bandwidth – AC Signal

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 6 Release Candidate, new hardware & more! #Python #Adafruit #CircuitPython #ElectronicHalloween @micropython @ThePSF

Adafruit IoT Monthly — Matrix Portal, Solar Lawn Sprinkler and more!

Microsoft MakeCode — micro:bit version 2 Announced!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 10/21/2020 Featuring #Adafruit Voice Bonnet for Raspberry Pi – Two Speakers + Two Mics! @adafruit #newproducts

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


  1. ha! the innuendo caught me off guard XD

    *great* explanation of battery current limitations 🙂

  2. This was an awesome video. I found it very enlightening and I was shocked to find the ultracapacitors melted through a coin!

  3. Great educational, and I found the right cap for the Li-Ion Solar Charger!!! 😉

  4. Reminds me of a couple Science Fiction stories where the weapon power packs were used as crude bombs.

    In one, as the cell was crushed, it internally shorted and blew off like a grenade.

    For live use, don’t forget to fuse these things, looks like they’d turn 10 gauge wire into a pretty effective rocket motor ignitor.

    Anyone actually manage to short one with something heavy enough to not burn away and see what kind of failure is to be expected.

  5. Did you watch the video YouTube chained from this one from where he’s running his TV off a bank of 2600 F capacitors charged to 12 V? Very interesting and impressive.

    However, it terrified me to see him waving his hands around the charged capacitors while wearing a metal ring on his finger and a metal band (watch strap?) on his wrist. I know of at least one person who lost a finger (burnt off) getting his ring across a 5 V TTL power supply for a largish 1970s computer. High current sources deserve at least as much respect as high voltage sources.

  6. I’ve worked on a project that has two 0.68F supercaps on it; they must have some sort of safety ESR built in, because their discharge rate is quite limited. (And thankfully so, as our client has shorted them in an attempt to fully discharge them!)

Sorry, the comment form is closed at this time.