Let’s talk about the newest part of this year’s Hackaday Prize: Best Product. In addition to all of the other prizes offered, the Best Product Prize will award $100,000 to one entry which is designed for manufacturing and embodies the core of this year’s theme. What exactly does that mean? It boils down to one hundred grand to jumpstart your product launch. Let’s take a closer look at why we added this prize and the specifics of entry.
What about the other 90%
You have a working prototype and you’re one step away from making your first million, right? That is almost always a fallacy. One major hurdle is the engineering needed to take a working prototype to the factory line — that can be nine-tenths of the work. Designing for production is a story that we want to tell. This becomes an educational tool for those just starting to learn about product design. If we make the steps, gotchas, and tricks of the trade easier to learn we chip away at the hard part of hardware and this is one of the chief motivators for adding Best Product.
Proving Your Market
Before you take the risk you want to make sure there is a customer base out there who want to buy your hardware. We’ve noticed that Crowd Funding platforms are a growing avenue for market research. It has become something of a pre-order system, but it also means that all decisions are somewhat locked in before going into production. We see the Best Product prize as a way to prove the market, not just for the winner but surely for all of the ten finalists as well. Still want to go the crowd funding route afterwards? Fine, we’ve seen big things happen for a lot of great builds featured on Hackaday. But competing for the Best Product award keeps your options open during and after the crowd has spoken their peace.
Slightly Different Entry and Judging Criteria
The entry requirements and judging criteria for Best Product are both a bit different form the main entry field. Rest assured you are still eligible to compete for all of the other prizes.
On the entry side of things the biggest difference is that you need to send us three working beta units for testing by August 17th. When we sat down to figure out what makes something “a product”, the existence of several working prototypes in the hands of beta users was high on that list. In this case we’ll be the testers but this lets us verify that entries aren’t vaporware. You will also need to complete most of your documentation by the entry date.
On the judging side of things the criteria quite different. One noteworthy change to point out; Openness is not among the Best Product judging criteria. If you want to keep the secret-sauce secret you won’t be penalized for it. However, if you also want to win the Grand Prize, Open is the way.
Read the Rules, Start Your Entry
Now that you’re really excited about all of this, make sure you go and read all of the Official Rules. Sections 4 & 5 both have information about Best Product entry and judging criteria.
Getting your entry started is easy. Just begin a project on Hackaday.io and add the tags “2015HackadayPrize” and “BestProduct”. This lets us know you’re in it to win it and we’ll keep you informed of what is coming down the pipeline as the Hackaday Prize progresses.
Making a Space Invaders game is up there on the list of most unconventional things you could do with a laser cutter. In watching the tiny little ships burst into flames, [Martin Raynsford’s] modification has got to be one of the more dangerous looking ones we’ve seen as well.
[Martin] always had the desire to make a tangible version of the classic game. Since his Whitetooth A1 laser cutter already contained the bulk of the moving hardware needed, not to mention an actual high powered laser to “pew pew” with, he decided it was the perfect starting point for such a project. The game is played looking down into the cutter since the laser of course fires in that direction, however a basic webcam is mounted to the laser assembly so that you can view the game on a computer screen at the proper perspective. An Arduino Mini is responsible for stepper control, allowing the player to jog back and forth and fire with a keyboard. [Martin] added an extra gear to the z-axis bed-leveler so that it could drive rows of paper invaders left and right across the bottom. Paperclips wedged into slots along a modified backboard hold each of the paper slips in place. This works ideally since they can be reloaded easily and won’t be maimed during use.
Due to the heat of the laser, landing a well positioned shot will likely nuke all of the nearby invaders as well, making for a theatrical inferno and easy win. Now to step up the difficulty level and figure out how to make them fire back…
A one-shot is a pulse generator that runs once and only once. You trigger it, it produces the desired pulse, and that’s all she wrote. Why is this handy? Many external ICs that you’ll interface with have minimum durations for signal pulses that must be respected. You could program the AVR to toggle a pin high and then sit around and wait until it’s time to toggle the pin low again, but this wastes valuable CPU time, isn’t going to be very precise, and is susceptible to timing discrepancies if interrupt routines fire in the mean time.
You’d think that you could use the hardware timers for this, but it’s not straightforward. Normally, the timers are free-running; the counter that’s keeping track of time rolls over the top and starts over again. But we just want one pulse.
[Josh]’s very clever idea abuses the timer/counter’s TOP and MATCH values in “Fast PWM” mode. Essentially you trick the counter into never matching by setting TOP below MATCH. This means that the counter spins in its loop between zero and TOP forever, doing nothing.
To break it out of its loop and enable the one-shot, you manually set the counter to a value above TOP and let it go. As it counts up, it’ll eventually hit MATCH, turn on your pin, and then keep counting. When it rolls over the top (255 + 1 = 0 for the 8-bit AVRs), your pin will be correctly turned off again and then the counter re-enters its loop. The one-shot won’t fire until you manually set the counter higher than TOP again.
So there you have it, a one-shot depending only on the hardware timer/counter module and thus immune to jitter and consuming no CPU time at all. Our hats off to you, [Josh]. Clever hack.
The project is based on an Atmel 328P and all it needs to report position data is a small antenna and a battery. For those unfamiliar with APRS, it uses amateur radio frequencies to send data packets instead of something like the GSM network. APRS is very robust, and devices that use it can send GPS information as well as text messages, emails, weather reports, radio telemetry data, and radio direction finding information in case GPS is not available.
If this location reporting ability isn’t enough for you, the project can function as a shield as well, which means that more data lines are available for other things like monitoring sensors and driving servos. All in a small, lightweight package that doesn’t rely on a cell network. All of the schematics and other information are available on the project site if you want to give this a shot, but if you DO need the cell network, this may be more your style. Be sure to check out the video after the break, too!
Given the small selection of materials, the entire project is a labor of love. Even the video (after the break) glosses over the careful selection of bearings, bolt-hole spacing, and time-sensitive gear ratios, each of which may be an easy macro in other CAD programs that [Lawrence], in this case, needed to add himself.
Finally, the entire project is open source and up for download on the Githubs. It’s not every day we can build ourselves a pendulum clock with a simple command-line-incantation to
Here is a great introduction to a practical application of electromagnetic theory—the field telephone. It’s a training film from 1961 that covers the sound-powered, local battery, and common battery systems along with the six basic components they use: generators, ringers, transmitters, receivers, induction coils, and capacitors.
Clear illustrations and smart narration are the hallmarks of these Army training films, and this one begins with a great explanation of generator theory. The phone’s ringer uses electromagnetic attraction and repulsion to do the mechanical work of striking the bells. Similarly, the sound waves generated by a caller’s speech move an armature to create an alternating electrical current that is transmitted and converted back to sound waves on the receiving end.
In the local battery system, the battery pushes pulsating DC to carry the voice transmission. An induction coil increases the capabilities of this system, but capacitors are required to filter out the frequencies that would overload the receiver, passing only the higher speech frequencies.
In order for several stations to communicate, the use of a switchboard is required to patch the calls through. There are many advantages of a common battery system with regard to call switching: no local battery is necessary, nor is a generator needed at each station. Calls are easier to place, and communication is much faster.
The concession stand at the Midwest Rep Rap Festival did not disappoint when it came to the expected fare: hot dogs, walking tacos, and bananas for scale. But the yummiest things there could not be bought—the Nutella prints coming off the Ultimaker² at the structur3D booth.
Hey, what? Yes, an Ultimaker² that can print in Nutella, icing sugar, silicone, latex, wood filler, conductive ink, polyurethane, peanut butter, and a growing list to which you should contribute. This is possible because of their Discov3ry Universal Paste Extruder add-on, which is compatible with most filament printers, especially those that use a RAMPs or Arduino control board.
A large syringe containing the substance of your choice is loaded business end up in the Discov3ry. It gets pushed through tubing that runs to the print head and out through one of many commonly available polypropylene or stainless steel tips. The structur3D team has found that printing on waxed paper works best for the materials they’ve proven out. Each syringe holds 60cc of stuff, and the Discov3ry comes with three of them. They are currently available for pre-order, with a shipping forecast of early summer.