Traditionally, pumpkins are carved during the holiday of Halloween to represent malicious and frightening beasts. Flying in the face of this is [minihannah]’s carving of Adam Savage, which she’s calling a hero pumpkin. It’s a fun twist on the custom, and of course, it’s packing WiFi too.
The build starts with a carving of the typical orange winter squash cultivar, using artwork cribbed from the cover of Mr. Savage’s biography. Inside, there’s a bunch of LEDs, all under the control of an adafruit feather M0, which talks to the broader internet over WiFi. The pumpkin can be controlled by Alexa, thanks to the combination of Adafruit.IO and IFTTT.
It’s a fun little Internet of Things build, and one that’s ready for the modern smarthome, where you’re already used to yelling at the lights to switch off. We’d love to see a similar Billy Corgan build, if only for the pun. If you give it a go, be sure to drop us a line. Video after the break.
Continue reading “Alexa Controls This Savage Pumpkin”
For many of us, our first encounter with the famous trebuchet was Age of Empires II, or perhaps a documentary on historical siege engines. However, many people continue to pursue builds of their very own, exploring designs new and old. The walking arm trebuchet is a good example, which uses an unconventional design to great effect.
The design eschews a rigid frame, instead consisting of simply an arm and a triangular leg assembly. The arm is held upside down, and is launched by allowing the trebuchet to collapse forward to rest on the triangular leg. The triangular leg is fitted with spikes which dig into the ground, and the arm then pivots around, launching the projectile. The design is reportedly quite efficient, similar to a floating arm trebuchet, with a very simple design. Performance was so good, it netted a clean sweep of the 2018 Vermont Pumpkin Chuckin’ festival.
There’s a wide variety of ways to go about building a trebuchet, and we’ve featured some before. You can even instrument your payloads to quantify performance. Video after the break.
Continue reading “Walking Arm Trebuchet Is Different, But Effective”
Using a legitimate flamethrower is on the bucket list for a lot of us. Even Elon Musk got into the action with his Not-A-Flamethrower flamethrower. For the rest of us non-billionaires though, we have to come up with clever reasons to build our own like “Halloween is only six months away”. [HandsomeRyan] took this approach six months ago to great effect, and recently released the files on Thingiverse for us all to enjoy.
The cover for building this project was making a Jack-o-Lantern shoot flames out of its face on-demand. The build is based around a car door locking solenoid, which has plenty of kick for applications like this. [HandsomeRyan] upgraded his old wood design with fancy 3D-printed parts which, with the help of the solenoid, deliver a blast of flammable material across a candle inside the Jack-o-Lantern via an aerosol can hidden in the pumpkin.
Part of the elegance of this project is that a car door locking solenoid is typically controlled by remote, meaning that if you want this to be remote-controlled the work has already been done for you. If you need a more timely excuse for building one of these, the Fourth of July is a little bit closer, which should work in a pinch as an excuse to build something crazy even if you’re not American.
Continue reading “It’s Never Too Early To Prepare For Halloween: With Flamethrowers”
The wonders of 3D printing don’t stop coming. Whether it’s printing tools on the International Space Station, printing houses out of concrete, or just making spare parts for a child’s toy, there’s virtually nothing you can’t get done with the right 3D printer, including spicing up your Halloween decorations.
Not only is this pumpkin a great-looking decoration for the season on its own, but it can also transform into a rather unsettling spider as well for a little bit of traditional Halloween surprise. The print is seven parts, which all snap into place and fold together with a set of ball-and-socket joints. While it doesn’t have any automatic opening and closing from a set of servos, perhaps we will see someone come up with a motion-activated pumpkin spider transformer that will shock all the trick-or-treaters at the end of this month.
It’s not too late to get one for yourself, either. The files are available on Thingiverse or through the project site. And we’ve seen plenty of other Halloween hacks and projects throughout the years too if you’re looking for other ideas, like the recent candy machine game, a rather surprising flying human head, or this terrifying robot.
As the candy rush fades, the Halloween hacks continue pouring in. [Jeremy S Cook] has taken a few fundamental concepts and dressed them up inside the smartest pumpkin on the block.
This pumpkin has a WEMOS D1 Mini ESP8266 brain, LED eyes in place of a candle for illumination, and a small USB power bank for power. The code [Cook] is using is a modified sketch by YouTuber [Innovative Tom], which creates a server on your network — don’t forget to insert your network credentials! — that enable control of the LEDs from your computer or smart phone.
[Cook] has wired the LEDs to the relevant pins on the D1 Mini, zip-tied the battery and board together and stuff them in a plastic bag to keep them dry. Stick that into the pumpkin, hot glue the LEDs in place, and test it out!
Continue reading “The Internet Of Jack-O’-Lanterns”
Fall – it’s that time of year that brings falling leaves, Hallowe’en, and a pumpkin version of everything that you hold dear. In this case, it’s not a latte – it’s [Robert Vorthman]’s Pumpkin Piano.
[Robert] took a straightforward approach to the build, pressing a Raspberry Pi into service as the backbone of the operation. This is combined with an Adafruit breakout board for the MPR121, which is a chip that provides 12 capacitive touch-sensitive inputs. These are connected to the bountiful produce which make up the piano keys in this fun holiday hack. [Robert] uses some Python code that talks to fluidsynth, a software synthesizer that uses Soundfont files to create different sounds. It’s all wrapped up with some Neopixels that flash when each vegetable is triggered.
The build would make a great party piece for just about any fall gathering, and [Robert] has done a great job of rolling up all the hardware and software required in the write-up. For another take on a vegetable-based orchestra, check out last year’s Harpsi-gourd.
Halloween might be over, but for some of us there’s still another pumpkin-centric holiday right around the corner to give us an excuse to build projects out of various gourds. During a challenge at a local event, [Michael] came up with a virtual cornucopia of uses for all of the squashes he had on hand and built a touch-sensitive piano with all of them.
The musical instrument was dubbed the Harpsi-Gourd and makes extensive use of the Arduino touch-sensitive libraries. Beyond that, the project was constructed to be able to fit into a standard sized upright piano. While only 15 pumpkins are currently employed, the instrument can be scaled up to 48 pumpkins. Presumably they would need to be very small for the lid of the piano to still close.
The Harpsi-Gourd is a whimsical re-imagining of the original Makey Makey which can be used to do all kinds of things, including play Mario Bros. There are all kinds of other food-based musical instruments at your disposal as well, though.