Add CNC to your…Propane Tank??!?

It’s starting to be that time of year again; the Halloween-themed hacks are rolling in.

[John Lauer] needed a propane-powered flame effect for his backyard ICBM “crash site”. Rather than pony up for an expensive, electronically-controlled propane
valve, he made a custom bracket to connect a stepper motor to the propane burner’s existing valve.

With the stepper motor connected up, a TinyG stepper motor controller and [John's] own graphical interface, ChiliPeppr, take care of the rest.

The hack is almost certainly a case of “everything looks like a nail when you have a hammer” but you have to admit that it works well and probably didn’t take [John] all that much time to whip up. Maybe everyone should have a couple spare stepper motors with driver circuitry just lying around ready to go? You know, just in case.

All the details of the build are in the video. If you’re done watching the flames, skip to around 2:50 where we see the adapter in action and then [John] steps us through its construction.

You may have seen coverage of the TinyG motor controller here before.

Additional thanks to [Alden Hart] for the tip.

Hacklet #9 Bugs and Fire

9 This week on the Hacklet, we’re spending some time looking at bugs and fire! honeybeeFirst up we have [Noel] who is saving the bees with Bee-O-Neo-Tweet-O. Bees are incredibly important, both to Earth’s ecosystem and the food chain we humans need to survive. Unfortunately bees are also sensitive to some of the chemicals humans dump into the atmosphere. Sometimes it results in colored honey, but more often than not it’s detrimental to the bees.

Neonicotinoids are a class of insecticide that has been causing problems to hives near where they are used. [Noel] is banking on sensors created with bismuth electrodes to detect the chemical near the entrance to hives. The data can be collected by beekeepers all over the world and sent to a central server. He’s using an Arduino Yun as a WiFi connected base station. Each individual hive has an Adafriut Trinket and a 433MHz radio link to send data to the base. [Noel] is even hoping to detect individual bees by the sound of their wings beating.

hivemonitor

[Ken] is keeping his own bees, and wants to monitor more than just chemicals. His honeybee hive monitoring system keeps track of the temperature and weight (and thus the honey produced) by his hives. Rather than buy an expensive load cell setup, [Ken] modified a standard digital bathroom scale to suit his needs. The insects connect to the IOB (Internet of Bees) with a bit of help from the Apitronics platform and a BeagleBone Black. Ken even added a solar-powered weather station with the Apitronics system.

bug-killa[Mike] is taking a slightly different approach. He doesn’t want to save the bugs, he wants to kill the ones that bug him! [Mike] doesn’t want to get his hands dirty, so he’s created Lazy Killer 9000 for easy bug killing. Lazy Killer uses the business end of an electrified fly swatter to do its work. This project wouldn’t be complete without an Arduino, so [Mike] is adding one, as well as a WiFi shield. The entire system will have a friendly interface to turn the juice on. One of the best features of Lazy Killer is the internet connected kill count. [Mike] knows that there aren’t any bugs in the vacuum of space, so he’s entered Lazy Killer in The Hackaday Prize.

fire-charger

From bugs, we move on to Fire! [mr.jb.swe] needed a reliable portable power source. He found it in LiFePO4 batteries, but still needed a way to charge them. Toward that end he’s created The Multicharger, a watt meter and charger which can be powered from solar, wind, or thermometric power. A Powerpot X provides the fire and the power to charge the batteries. [mr.jb.swe's] charger converts that into the standard constant current->constant voltage charging system needed by lithium chemistry batteries. The Multicharger isn’t a complete battery management system yet, but it’s well on its way.

Unitycandle candles have become a staple at wedding ceremonies.[Quinn] has taken things to the next level and beyond with this take on the classic unity candle. This candle throws fireballs 30 feet into the sky! We covered the candle back in June, but [Quinn] has been busy since then. With over 20 updates, [Quinn] has created one of the most well documented projects on Hackaday.io. Of course, being that this project is dealing with propane and monstrous fires, [Quinn] mentions you shouldn’t try unless you really know what you’re doing. Don’t set any brides on fire! That’s it for this week’s Hacklet! Tune in next week, same hack time, same hack channel, for more of the best of Hackaday.io!

The Party was Bumping, then the Fire Dragon Showed Up

Epic Party.

I don’t use that label lightly. After the Red Bull Creation’s day of show and tell was over — winners having been presented with trophies and stuffed with barbecue over at Bert’s — people started to trickle into OmniCorp Detroit for the party.

Like all of the best parties we didn’t really see it coming. I grabbed a folding chair on the street out front with a beer in my hand and enjoyed a rotating variety of interesting people to talk with. Brian Benchoff trys out the team choice trophy -- a modified toddler's tricycle [Brian] rolled up riding one of the trophies, a modified toddler’s tricycle that proves his future with a travelling circuit is still viable. They roped off the area and set up huge speakers for the DJ. Then two guys game lumbering down the street sharing the work of hauling a tub full of ice and 12-ounce clear glass bottles with colored liquid inside. Turns out they just opened a distillery down the street and decided to donate some vodka infusions for the festivities. Yum!

Upstairs, a couple hundred square feet of area was ringed by a bar (with wide variety of kegs, slushy drinks, and one of those hot dog rollers), couches, a few work benches, a second DJ booth, and a photobooth. We only got one picture before the smoke machine reduced visibility.

Unlike a lot of ragers I’ve been at, it was easy to start up a conversation with just about anyone. Living expenses are so low in Detroit and artists are flocking to the area. This is who made up most of the group. Fascinating people who are working on a multitude of different projects and have stories of building community on their streets while rehabbing houses that cost $1-2.5k to purchase but didn’t come with most of what you’d assume a house should.

Then the fire dragon showed up

Inside was packed and outside was starting to get crowded. Then the fire dragon showed up. Named Gon KiRin, it’s the collaboration between [Teddy Lo] and [Ryan C. Doyle] who was on Team Detroitus and is artist in residence at Recycle Here!, the build venue for the Red Bull Creation. Couch on the back above the propane tankThe beast is built on the frame of a 1960′s dump truck and most of the building materials were found on the sides of the highway. The huge propane tank on the back allows it to breathe fire. I love that three daisy-chained 9-volts and two bare wires are the control mechanism for this. One thing became readily apparent; you don’t stand in front of Gon KiRin while it’s breathing fire.

The crowd piled onto the couches on top of the tail and at either rear hip. The dragons back also bore a continually rotating set of people. After midnight the guests really started to flood in. [Caleb] and I tried to close down the party but a few hours after midnight it didn’t seem to be getting any slower.

Capping off the weekend like this really proves that you need to get your team into next year’s Red Bull Creation. I got in the easy way — judges don’t have to stay up for 72 hours building stuff. Despite the sleep deprivation for contestants I didn’t come across anyone who wasn’t having a blast during the build, while goofing off, or trying to stay awake as this party got moving.

Bravo Detroit, you’re now on my short list of best party towns. Who else wants to be added to that list? Hackaday’s going to be in Las Vegas for DEFCON in a few weeks. Anyone know of parties planned that weekend and how we can get in?

[Furze] Sets Fire to Everything with Pyro Gloves

Pyro Build

Crazyman [Colin Furze] is back, and this time he’s setting everything on fire with his Pyro gloves. Though Hackaday readers are already a discerning bunch, this is a build we get submissions for all the time and feature fairly often. It would take an exceedingly impressive build to outshine the other fire hazards. But, as with his pneumatic Wolverine claws and his electromagnetic boots, [Furze] knows how to build the insane and then put on a good show.

The Pyro build is part of [Furze's] 3-part celebratory X-Men extravaganza, a nod to the realm of superheroes coinciding with the release of the new X-Men film. [Furze] began with a custom reservoir cylinder that fitted with two solenoid valves: one for a pilot light and another for the big blasts. He’s also affixed a Piezo element and a AA battery, which sits in a cozy little container. The bulkier bits of the assembly sit in a backpack, hooking up, as expected, to the wrist-mounted devices. This flame cannon, however, is unique among the ones we’ve encountered here.

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Wrist-mounted flamethrower on the cheap

flamethrowerGlove

Everyone wants to be Iron Man these days, but without a spare arc reactor lying around, you’ll have to settle on building a backup suit component. [Xavier] documents his take on the wrist-mounted flamethrower in this dirt-cheap and unquestionably dangerous build. Cobbled together from parts found at a local hardware store, this glove has the typical “ready” setting with a small flame that, upon turning one’s wrist, erupts into a loud and large swath of flames. We suspect the mask worn in the video below doubles as identity protection and to prevent accidental hair conflagrations. Skip to the end for a demonstration.

Though not the first flamethrower build at Hackaday, [Xavier's] is the only one with a guide and is certainly the cheapest. Be sure to look into the second generation of the Prometheus flame thrower and its subsequent third version that we featured a couple of years back. Not everyone’s flamethrower is wrist-mounted; some people put them inside a trombone. Remember, don’t try this at home.

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Propane forge built from a soup can

propane-forge-from-soup-can

It doesn’t look like much, but this easy to build propane forge is just what you need to try your hand at blacksmithing. [Code Cowboy] took on the build after watching this how-to video which shows the fabrication of a small knife after completing the forge build.

The first step is to eat all of the soup (or beans if you prefer). With an empty can in hand the stand — made of two angle brackets — and inlet are attached. Next comes the heat proofing for the walls of the forge. At first glance we thought that cat litter was one of the ingredients, but that’s just an empty container used to haul playground sand. The sand is mixed with equal parts of plaster of paris before adding water to achieve a clay-like consistency. This is packed into the can, with a small opening to receive the metal to be heated.

The torch itself can be used to cure the heat shield. After letting the mixture harden a 30 minute burn will force the rest of the water out of the heat proofing.

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Building an internal combustion engine from hardware store parts

[MacGyver] [Lou Wozniak] is on a mission to build an internal combustion engine using only hardware store parts. What you see above is his third attempt at it. Depending on your hardware store this may have ventured outside of what they sell because [Lou] switched over to using gasoline. But the first two attempts were powered by a propane torch fuel canister.

Unfortunately it still isn’t running. But the demo below makes us think that he’s really close. Timing is always touchy and that seems to be what is causing the problems. He makes use of a lot of plumbing fixtures. At the right you can see the parts (including a peanut butter jar) which make his carburetor with a valve pointing straight up as the choke. The fuel and air mixture moves down through the pipe to the cylinder and valve assembly where it is ignited by the black grill igniter module. His custom cut plywood gear moves with the fly-wheel. It triggers his improvised spark plug by using a bit of wire to pull on the leaf switch.

We feel like he’s so close to getting this up and running. If you have any advice on where he might be going wrong [Lou] welcomes your input.

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