Electric Dump Truck Tricycle Is No Toy

There are some utility bicycles on the market, some with electric motors to help carry a good bit of cargo. If you really need to haul more weight than a typical grocery-getter like this, you’ll want to look into a tricycle for higher capacity loads. Nothing you’ll find will match this monstrous electric tricycle hand-built by [AtomicZombie] out of junkyard parts, though. It’s a mule.

Since [AtomicZombie] sourced most of the underpinnings of this build from the junkyard, it’s based on an old motorcycle frame combined with the differential from a pickup truck, with a self-welded frame. He’s using an electric motor and a fleet of lead acid batteries for the build (since weight is no concern) and is using a gear reduction large enough to allow him to haul logs and dirt with ease (and dump them with the built in dump-truck bed), and even pull tree stumps from the ground, all without taxing the motor.

[AtomicZombie] documented every step of the build along the way, and it’s worth checking out. He uses it as a farm tractor on his homestead, and it is even equipped with a tow hitch to move various pieces of equipment around. Unlike a similar three-wheeled electric contraption from a while back, though, this one almost certainly isn’t street legal, but it’s still a blast!

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Smart Bike Helmet Is Wireless

If you ride a bike, you probably share the road with a lot of cars. Unfortunately, they don’t always share the road very well with you. [Mech Tools] took a helmet, a few Arduinos, and some wireless transceivers and made headgear that shows when you stop and also shows turn signals. We were a little surprised, though, that the bike in question looks like a motorcycle. In most countries, motorcycle helmets meet strict safety standards and modifying them is probably not a good idea. However, it wasn’t exactly clear how the extra gear attached to the helmet, so it is hard to say if the project is very practical or not.

In particular, it looks as though the first version had the electronics just stuck to the outside of the helmet. The final one had things mounted internally and almost certainly had cuts or holes made for the lights. We aren’t sure which of those would be more likely to be a problem in the case of an accident.

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This Monowheel Is Bright Orange, And We Want One

Monowheels are a singular form of transport. Like electric scooters and the Segway, they are remarkably impractical for getting from point A to point B, are expensive to build or buy, and make you look faintly silly as you ride them down the street. However, we’d be hard pressed to find a member of the Hackaday team that wouldn’t at least want a go on one for half an hour. [MakeItExtreme] felt the same way, and built one of their own.

The build starts with a tube bender, used to form 40mm tubing into a continuous circle to form the main wheel. Teflon is then turned to produce several rollers that interface the main wheel to the inner frame. Several small motorbike tyres were cut apart to create the tread to provide some decent grip. Power comes courtesy of a 110cc four stroke engine, allowing this thing to go just fast enough to get the rider seriously injured in the event of an accident. The team reports stability is poor at low speed, but remarkably good once above 30 km/h.

The team did a great job, and we particularly enjoy the bright orange paint scheme and fetching decals that really finish it off well. The monowheel concept is remarkably similar to the diwheel, which we’ve seen applied to old Fords with somewhat terrifying results. Video after the break.

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Adding Upgrades To A Stock Motorcycle

In today’s world of over-the-air firmware upgrades in everything from cars to phones to refrigerators, it’s common for manufacturers of various things to lock out features in software and force you to pay for the upgrades. Even if the hardware is the same across all the models, you can still be on the hook if you want to unlock anything extra. And, it seems as though Suzuki might be following this trend as well, as [Sebastian] found out when he opened up his 2011 Vstrom motorcycle.

The main feature that was lacking on this bike was a gear indicator. Even though all the hardware was available in the gearbox, and the ECU was able to know the current gear in use, there was no indicator on the gauge cluster. By using an Arduino paired with an OBD reading tool (even motorcycles make use of OBD these days), [Sebastian] was able to wire an LED ring into the gauge cluster to show the current gear while he’s riding.

The build is very professionally done and is so well blended into the gauge cluster that even we had a hard time spotting it at first. While this feature might require some additional lighting on the gauge cluster for Suzuki to be able to offer this feature, we have seen other “missing” features in devices that could be unlocked with a laughably small amount of effort.

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Hackaday Links: August 19, 2018

If you want to creep everyone out, [Hunter Irving] has your back. He found a weird, creepy knock-off Thomas the Tank Engine toy and mounted a servo to it. This animatronic face is really, really creepy and has the aesthetic of a pastel plastic hell of the forgotten toys destroyed in a day care in 1991. It probably smells like a thrift shop. This rosy-cheeked locomotive shall derail your soul. It sings karaoke.

Like badges? Sure you do. Ph0xx is the badge for the upcoming Fri3d Camp, a family hacker, maker, and DIY camp in Belgium with 600 attendees. The badge features an ESP-32, two 5×7 LED arrays, accelerometer, an 18650 battery with protection and a charger, expansion headers, and this badge is compatible with Lego Technic. Oh yes, they went there.

We’re filing this under ‘but why’. It’s a custom Mercedes-Benz motorcycle, with a sidecar, that looks like an early 80s Benz convertible. [Maarten] stumbled upon a few pics of this, but the google-fu is weak in trying to get some information about this build. Who built it? Why? Does it run?

Here’s something near and dear to my heart: my greatest contribution to humanity so far. The Shitty Add-On spec for this year’s batch of Def Con badges is the reason badges now have their own badges. Now it’s time for a slight upgrade to the standard, and I need your help. The SAO standard 1.1bis will retain the VCC/GND/SDA/SCL layout of the first revision, but to increase mechanical stability and decrease the complexity of populating the headers, we’re adding two pins. Here’s the question: what should these two extra pins do? The current options are adding TX and RX to the standard, or two GPIOs that are undefined, but able to be utilized by each badge team for their own purposes. Those are the two options, but I’m looking for your input in the comments. Hurry up, because we have Superconference badges to build.

You should know the Primitive Technology channel on YouTube. This week he made another step towards the iron age. The basic idea behind this channel is a guy in Australia playing Minecraft in real life, building everything he can, starting with the technology of punching trees. The latest video shows his process for smelting iron. The iron comes from iron-bearing bacterial sludge found in a creek. The geologic disadvantages of northeastern Australia notwithstanding, he’s doing everything else right. He’s making charcoal, and turning that sludge into something that could be a bloom of iron.

Harley-Hardened Wire Helps High-Gain Antenna Hack

What does a Harley-Davidson motorcycle have to do with building antennas? Absolutely nothing, unless you happen to have one and need to work-harden copper wire to build a collinear antenna for LoRa.

We’ll explain. Never being one to settle, [Andreas Spiess] needed a better antenna for his LoRa experiments. Looking for high gain and an omnidirectional pattern, he bought a commercial colinear antenna, which is a wire with precisely spaced loops that acts like a stack of dipoles. Sadly, in a head-to-head test [Andreas] found that the commercial antenna was no better than lower gain antennas in terms of range, and so he decided to roll his own.

Copper wire is a great material for antennas since it can be easily formed without special tools and it solders like a champ. But the stuff you get at the home center is nowhere near stiff enough for a free-standing vertical whip. This is where the Harley came in: [Andreas] used his Hog to stretch out the 1.75-mm diameter (a little bigger than #14 AWG) copper wire. Not only did the work-hardening stiffen the wire, it reduced its diameter to the 1.4 mm needed for the antenna design. His vector network analyzer told him that ground-plane elements and a little fiddling with the loop diameter were needed to get the antenna to resonate at 868 MHz, but in the end it looks like the antenna is on track to deliver 5-dBi of gain.

Of course there are plenty of other ways to stretch out a wire — you could just stretch it out with hanging weights, or even with a go-kart motor-powered winch if you’re ambitious. But if you’ve got a bike like that, why not flaunt it?

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Finding Your Motorbike Using Wi-Fi

An urban planner once told me that every car requires at least four times as much space as they actually occupy. Each needs a spot on the roads, and three available parking spaces: one at home, one at work, and one to shop. Motorcycles are much smaller, but they still spend most of their time parked.

Motorcycles are the primary means of transport in Southeast Asia, and learning to safely drive one is an essential part of adapting to life here. Assuming it’s not pouring rain and you’re not flooded past your ankles, it’s actually quite a pleasant experience… until you have to park.

Unlike the parking lots you may be familiar with, there’s no expectation that your bike won’t be moved. In fact, it might very well end up on another floor, in another parking lot, or behind hundreds of impassable parked bikes on the roof. In the latter case, the attendant will shrug and suggest you come back in a few hours. Eventually, this won’t even register as a frustration – you will simply reason that there are plenty of other things that are more convenient here, like the weather (recent typhoon aside) or unlimited symmetrical fiber to the home for USD 5 a month.

That being said, with a little technology the problem could be lessened a bit while waiting for automated parking lots to become commonplace. On rare occasions I see people with little radio emitters that make their headlights flash, but they’re not terribly common here and require carrying yet another thing on my already full key chain (homes here typically use several different locks). It seemed pretty easy to pull off something similar using my smart phone with an ESP8266 running NodeMCU. I had been meaning to try out the sleep modes to save battery power anyway, so off I went.

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