Google Home Meets ESP8266

May 23, 2017 by Adam Fabio 23 Comments

[Luc Volders] is building his own smart house with the help of Google Home and an ESP-8266. Inspired by the house computers from the TV show, Eureka [Luc] created an IoT ecosystem using a mix of off the shelf devices and open source software.

There are about a thousand ways to create a DIY smart home these days. All of them involve setting up a command receiver (like Amazon’s Echo or Google Home), some sort of cloud connection, and an end device controller. This can get complex for the beginner. [Luc’s] article is great because he walks is through each step tutorial style. He even keeps things simple by programming the ESP8266 using BASIC with ESP-BASIC.

[Luc] uses If This Then That (IFTT) as his cloud service. IFTT is the glue between Google’s cloud service and the ESP8266 connected to his home WiFi network. Speaking of which, [Luc] shows how to set up port forwarding on the router so all accesses to port 8085 go to the ESP8266. Not exactly strong security – but it’s better than opening the entire home network.

You don’t need a real Google home device for this hack. You can build your own with a Raspberry Pi. Once that is set up you can do everything from turning on lights to watering your lawn.

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Arise, Chicken, Arise!

May 23, 2017 by Brian Benchoff 47 Comments

A couple of months ago, [Mike] started saving bones from all the fried chicken he had been eating. If that’s the opening line, you know it’s going to be good.

This Cyborg Chicken project grew out of [Mike]’s love for battlebots, and an immense dearth of battleborgs. The difference, though small, is distinct: a robot is simply a machine that carries out instructions either automatically or via remote control. A cyborg, on the other hand, contains both organic and biomechatronic body parts. Since [Mike] was saving chicken bones, he stumbled upon the idea of creating a cyborg out of trash, a few servos, an MSP430, and some other parts sitting around in his junk drawer.

A continuation of an earlier remote controlled food project, the capabilities of these chicken battleborgs are about what you would expect: they roll around on wheels and flail their drumsticks wildly. [Mike] has already built at least two of these devices, and the result is accurately described as Rock ’em Sock ’em Borgs. Check out the video below for the action.

On the hardware side of things, [Mike] picked up an MSP430, and whipped up a bit of code in Java. Three billion enterprise computing systems and, now, two cyborg chickens run Java. The motors and drivers come from Pololu, and control is provided over IR with a pair of Atari joysticks.

You can check out the videos of these cyborg chickens below. If you have to ask why, the answer is always, ‘because’.

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Hackaday Prize Entry: Rangefinder + Camera = SmartZoom

May 23, 2017 by Donald Papp 17 Comments

The interesting thing about submissions for The Hackaday Prize is seeing unusual projects and concepts that might not otherwise pop up. [ken conrad] has a curious but thoughtfully designed idea for Raspberry Pi-based SmartZoom Imaging that uses a Pi Zero and camera plus some laser emitters to create a device with a very specific capability: a camera that constantly and dynamically resizes the image make the subject appear consistently framed and sized, regardless of its distance from the lens. The idea brings together two separate functions: rangefinding and automated zooming and re-sampling of the camera image.

The Raspberry Pi uses the camera board plus some forward-pointing laser dots as a rangefinder; as long as at least two laser dots are visible on the subject, the distance between the device and the subject can be calculated. The Pi then uses the knowledge of how near or far the subject is to present a final image whose zoom level has been adjusted to match (and offset) the range of the subject from the camera, in effect canceling out the way an object appears larger or smaller based on distance.

We’ve seen visible laser dots as the basis of rangefinding before, but never tied into a zoom function. Doubtlessly, [ken conrad] will update his project with some example applications, but in the meantime we’re left wondering: is there a concrete, practical use case for this unusual device? We have no idea, but we’d certainly have fun trying to find one.

The Textile Bench

May 23, 2017 by Jenny List 52 Comments

What’s on your bench? Mine’s mostly filled with electronic test equipment, soldering kit, and computers. I’m an electronic engineer by trade when I’m not writing for Hackaday, so that’s hardly surprising. Perhaps yours is like mine, or maybe you’ve added a 3D printer to the mix, a bunch of woodworking tools, or maybe power tools.

So that’s my bench. But is it my only bench? On the other side of the room from the electronics bench is a sturdy folding dining table that houses the tools and supplies of my other bench. I’m probably not alone in having more than one bench for different activities, indeed like many of you I also have a messy bench elsewhere for dismantling parts of 1960s cars, or making clay ovens.

My textile bench, with a selection of the equipment used on it.

The other bench in question though is not for messy work, in fact the diametric opposite. This is my textile bench, and it houses the various sewing machines and other equipment that allow me to tackle all sorts of projects involving fabric. On it I’ve made, modified, and repaired all sorts of clothing, I’ve made not-very-successful kites, passable sandals, and adventurous tent designs among countless other projects.

Some of you might wonder why my textile bench is Hackaday fodder, after all it’s probably safe to assume that few readers have ever considered fabricating their own taffeta ball gown. But to concentrate only on one aspect of textile work misses the point, because the potential is there for so much cross-over between these different threads of the maker world. So I’m going to take you through my textile bench and introduce you to its main tools. With luck this will demystify some of them, and maybe encourage you to have a go.

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Go Big Or Go Home: A Tablecloth Touchpad

May 23, 2017 by Al Williams 10 Comments

Phone screens keep getting bigger. Computer screens keep getting bigger. Why not a large trackpad to use as a mouse? [MaddyMaxey] had that thought and with a few components and some sewing skills created a trackpad in a tablecloth.

The electronics in this project are right off the shelf. A Flora board for the brains and 4 capacitive touch boards. If you haven’t seen the Flora, it is a circular-shaped Arduino made for sewing into things. The real interesting part is the construction. If you haven’t worked with conductive fabric and thread, this will be a real eye-opener. [Maddy’s] blog has a lot of information about her explorations into merging fabric and electronics and also covers things like selecting conductive thread.

As an optional feature, [MaddyMaxey] added vibration motors that provide haptic feedback to her touchpad. We were hoping for a video, but there doesn’t seem to be one. The code is just the example program for the capacitive sensor boards, although you can see in a screenshot the additions for the haptic motors.

We’ve covered the Flora before, by the way. You could also make a ridiculously large touch surface using tomography, although the resolution isn’t quite good enough for mouse purposes.

Stupid Git Tricks

May 23, 2017 by Al Williams 25 Comments

My apologies if you speak the Queen’s English since that title probably has a whole different meaning to you than I intended. In fact, I’m talking about Git, the version control system. Last time I talked about how the program came to be and offered you a few tutorials. If you are a dyed-in-the-wool software developer, you probably don’t need to be convinced to use Git. But even if you aren’t, there are a lot of things you can do with Git that don’t fit the usual mold.

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Josef Prusa: Multi Material Extruders For Amazing Color Prints

May 23, 2017 by Mike Szczys 61 Comments

The Prusa i3 Mk 2 is the hotness in consumer-grade, quality 3D printing right now. And things just keep getting more interesting. We caught up with Josef Průša at Maker Faire Bay Area this weekend to see the multi-material extruder in its final form. It’s an upgrade to the Mk 2 which allows a single hot end to print in four different materials, be it different colors or different types of filament.