Music-Loving BeagleBone

June 14, 2017 by Inderpreet Singh 10 Comments

Robotic control can get very complicated when multiple actuators need to work in coordination with each other. A simple robotic arm will require each joint to be controlled in sequence to attain a particular position. The BeagleBone Blue comes armed with motor drivers, sensor inputs, and wireless and is built for robotics.

[Andy] has prepared a musical robot called the BeagleBone Blue Electro-Mechanical Glockenspiel using the single board computer. The hardware consists of eight servo motors each with a mallet stick attached to them. The motors themselves are mounted on 3D-printed brackets allowing them to be mounted at the correct height. The servos connect to the main board for position control, however, an external supply had to be used to supply the necessary current to all the motors.

The software side has programs to translate notes into servo positions as well as connect to a web brower via MQTT and websockets. The basic user interface is simple and has buttons to connect to and send the keystrokes. The code, as well as the OpenSCAD designs, can be downloaded from GitHub. Check out the video below for a demo.

This project could be extended to an autonomous robot that plays tunes from the Internet. We are reminded of the rock throwing glockenspiel which was pretty cool and hope there are some permutations to come from both. Continue reading “Music-Loving BeagleBone” →

Cardboard And Paper Gun Shows Off Clever Construction

June 14, 2017 by Donald Papp 22 Comments

This project by [blackfish] shows off a cardboard lookalike of an MP5 that loads from a working magazine, has a functional charging handle, and flings paper projectiles with at least enough accuracy to plink some red party cups. It was made entirely from corrugated cardboard, paper, rubber bands, and toothpicks.

In the video (embedded below) you can see some clever construction techniques. For example, using a cyanoacrylate adhesive to saturate areas of wood, cardboard, or paper to give them added strength and rigidity. The video is well-edited and worth a watch to see the whole process; [blackfish] even uses a peeled piece of cardboard — exposing the corrugated part — as a set of detents (6:56) to retain the magazine.

Continue reading “Cardboard And Paper Gun Shows Off Clever Construction” →

Ikea Tradfri Hacking

June 14, 2017 by Al Williams 17 Comments

Smart lighting is all the rage right now. Sure, Phillips Hue is the giant player in the market, but there are plenty of ZigBee, Bluetooth, and WiFi light bulbs out there. Ikea–known for cheap furniture, meatballs, and waffles–is a recent addition to the field with their Tradfri system. Like most things from Ikea, they are effective and inexpensive. [Andreas] takes a Dremel to the controller and shows how to hack the system to use MQTT. You can check out the video below.

Once he had the device opened, the used the German Make magazine article we talked about earlier, to help understand what he had. Armed with the pinout, he was able to solder a wiring harness to the controller. He then connected a WeMos board. A little Arduino code later, and he was controlling the light with MQTT.

Continue reading “Ikea Tradfri Hacking” →

Hackaday Prize Entry: Automated Wildlife Recognition

June 14, 2017 by Donald Papp 11 Comments

Trail and wildlife cameras are commonly available nowadays, but the Wild Eye project aims to go beyond simply taking digital snapshots of critters. [Brenda Armour] uses a Raspberry Pi to not only take photos of wildlife who wander into the camera’s field of view, but to also automatically identify and categorize the animals seen using a visual recognition API from IBM via the Node-RED infrastructure. The result is a system that captures an image when motion is detected, sends the image to the visual recognition API, and attempts to identify any wildlife based on the returned data.

The visual recognition isn’t flawless, but a recent proof of concept shows promising results with crows, a cat, and a dog having been successfully identified. Perhaps when the project is ready to move deeper into the woods, elements from these solar-powered networked birdhouses (which also use the Raspberry Pi) could help cut some cords.

Designing Your Project To Scale: Crossing The Chasm

June 14, 2017 by Bob Baddeley 21 Comments

Hackaday is all about the neat hacks and the repurposing of old components into new projects, but many people then try to take those projects and turn them into businesses. We’ve seen lots of people offer their stuff as kits and sell them on Tindie, with the rare few going on to develop a consumer electronic product at scale.

The Hackaday Prize 2017 Best Product highlights this journey. “Scale” itself is a vague term, but essentially it means to be able to produce enough to meet market demand. We hope that market demand is roughly 7 billion units, purchasing yearly, but the reality is that it is somewhere between 1 and a few hundred thousand, with very big differences in manufacturing at each order of magnitude. So how do you start with a proof of concept and design your product from the very beginning to be optimized to scale to meet whatever demand you can handle?

Continue reading “Designing Your Project To Scale: Crossing The Chasm” →

Friday Hack Chat: Electronics Design And Naming A Puppy

June 14, 2017 by Brian Benchoff 40 Comments

For one reason or another, Hackaday has an extended family of ridiculously capable contributors. One of the most illustrious is [Bil Herd], Commodore refugee, electronic engineer, medic, and all-around awesome guy. He’ll be joining us over on Hackaday.io this Friday for a Hack Chat on Electronics Design.

This Friday, we’re hosting a Hack Chat with [Bil]. If you want to talk Commodore, this is the guy. If you want to talk about PLAs and programmable digital logic, this is the guy. If you want to know how to build a system from scratch in just a few months, [Bil]’s your man. [Bil] has decades of experience and his design work was produced by the millions. You’ll rarely come across someone with as much experience, and he’ll be in our Hack Chat this Friday.

[Bil] has a long career in electronics design, beginning with fixing CB radios and televisions back when fixing TVs was still a thing. Eventually, he worked his way up the engineering ladder at Commodore Business Machines where he designed the Commodore TED machines and the amazing Commodore 128.

After surviving Commodore, [Bil] has worked at a trauma center in Camden, NJ, flown with medics in the Army, and eventually came over to Hackaday where he produces videos from subjects ranging from direct digital synthesis, programmable logic, active filters, and how CMOS actually works. Basically, if it involves electronics, [Bil] knows what’s up.

Oh, as an added bonus, we get to name a puppy this week. [Bil] got a new puppy and it needs a name. Send in your suggestions!

Here’s How To Take Part:

Our Hack Chats are live community events on the Hackaday.io Hack Chat group messaging. This hack chat will take place at noon Pacific time on Friday, June 16th. Confused about where and when ‘noon’ is? Here’s a time and date converter!

Log into Hackaday.io, visit that page, and look for the ‘Join this Project’ Button. Once you’re part of the project, the button will change to ‘Team Messaging’, which takes you directly to the Hack Chat.

You don’t have to wait until Friday; join whenever you want and you can see what the community is talking about

Celebrating A Subscriber Milestone With A Copper YouTube Play Button

June 14, 2017 by Dan Maloney 7 Comments

YouTube channels unboxing their latest “Play Button Award,” a replica of the famous logo in silver, gold, or faux-diamond depending on the popularity of the channel, are getting passé. But a metalworking channel that makes its own copper Play Button award to celebrate 25,000 subs is something worth watching.

[Chris DePrisco] is a bit of a jack-of-all-trades, working in various materials but with a strong focus on metalwork. He recently completed a beefy home-brew vertical milling center; we covered his attempt to leverage that platform by adding an extruder and turning it into a large bed 3D printer. For the Play Button build, [Chris] turned to the VMC to mill a mold from what appears to be a block of graphite; good luck cleaning that mess up. He melted copper scrap in a homemade electric furnace and poured it into the preheated mold — a solid tip for [The King of Random]’s next copper casting attempt. The rough blank was CNC machined and polished into the Play Button, and finally mounted behind glass neatly inked with paint pens in the versatile VMC. The final result is far nicer than any of the other Button awards, at least in our opinion.

Continue reading “Celebrating A Subscriber Milestone With A Copper YouTube Play Button” →