Hackaday Prize Entry: Oscilloscope for the Masses

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If you head down to your local electronics supply shop (the Internet), you can pick up a quality true-RMS multimeter for about $100 that will do almost everything you will ever need. It won’t be able to view waveforms, though; this is the realm of the oscilloscope. Unlike the multimeter’s realistic price point, however, a decent oscilloscope is easily many hundreds, and often thousands, of dollars. While this is prohibitively expensive for most, the next entry into the Hackaday Prize seeks to bring an inexpensive oscilloscope to the masses.

The multiScope is built by [Vítor] and is based on the …read more

Imaginary AC Circuits Aren’t Really Complex

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If you have ever read advanced textbooks or papers about electronics, you may have been surprised to see the use of complex numbers used in the analysis of AC circuits. A complex number has two parts: a real part and an imaginary part. I’ve often thought that a lot of books and classes just kind of gloss over what this really means. What part of electricity is imaginary? Why do we do this?

The short answer is phase angle: the time delay between a voltage and a current in a circuit. How can an angle be a time? That’s part …read more

Hacked Car Axle Yields Custom 90° Gearbox

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Need a sturdy angle gearbox to handle power transmission for your next big project? Why not harvest a rear axle from a car and make one yourself?

When you think about it, the axle of a rear-wheel drive vehicle is really just a couple of 90° gearboxes linked together internally, and a pretty sturdy assembly that’s readily available for free or on the cheap. [Donn DIY]’s need for a gearbox to run a mower lead him to a boneyard for the raw material. The video below shows some truly impressive work with that indispensable tool of hardware hackers, the angle …read more

Amazon Echo Show

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Back in May, Amazon announced the Echo Show, its new version of Alexa with a 7 inch touchscreen. The Echo Show is an interesting device, but will the great unwashed masses pony up $229 to buy the show? That’s $50 more than the original Echo, or $180 more than the Echo Dot. With 5.2 million units sold in 2016, Echo has been a resounding success. This has been in part due to Amazon’s open approach to the API. Anyone can build an Alexa compatible device using a Raspberry Pi. Google has (finally) followed suit with their Home device.

It’s not …read more

Cardboard and Paper Gun Shows Off Clever Construction

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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 …read more

You are Go for FPGA!

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Reconfigure.io is accepting beta applications for its environment to configure FPGAs using Go. Yes, Go is a programming language, but the software converts code into FPGA constructs, so you don’t need Verilog or VHDL. Since Go supports concurrent routines and channels for synchronization and communications, the parallel nature of the FPGA should fit well.

According to the project’s website, the tool also allows you to reconfigure the FPGA on the fly using a cloud-based build and deploy system. There isn’t much detail yet, unless you get accepted for the alpha. They claim they’ll give priority to the most interesting use …read more

New Take on the Binary Clock

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By now it might seem like there’s no new way to build a binary clock. It’s one of the first projects many build to try out their first soldering irons, so it’s a well-traveled path. Every now and then, however, there’s a binary clock that takes a different approach, much like [Stephen]’s latest project which he calls the byte clock.

The clock works by dividing the 24-hour day into half and using an LED to represent this division, which coincidentally works out to representing AM or PM. The day is divided in half over and over again, with each division …read more

New Take on the Binary Clock

See the original posting on Hackaday

By now it might seem like there’s no new way to build a binary clock. It’s one of the first projects many build to try out their first soldering irons, so it’s a well-traveled path. Every now and then, however, there’s a binary clock that takes a different approach, much like [Stephen]’s latest project which he calls the byte clock.

The clock works by dividing the 24-hour day into half and using an LED to represent this division, which coincidentally works out to representing AM or PM. The day is divided in half over and over again, with each division …read more

You are Go for FPGA!

See the original posting on Hackaday

Reconfigure.io is accepting beta applications for its environment to configure FPGAs using Go. Yes, Go is a programming language, but the software converts code into FPGA constructs, so you don’t need Verilog or VHDL. Since Go supports concurrent routines and channels for synchronization and communications, the parallel nature of the FPGA should fit well.

According to the project’s website, the tool also allows you to reconfigure the FPGA on the fly using a cloud-based build and deploy system. There isn’t much detail yet, unless you get accepted for the alpha. They claim they’ll give priority to the most interesting use …read more

Cardboard and Paper Gun Shows Off Clever Construction

See the original posting on Hackaday

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 …read more

Celebrating a Subscriber Milestone with a Copper YouTube Play Button

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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 …read more

Friday Hack Chat: Electronics Design And Naming A Puppy

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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 …read more

Hackaday Prize Entry: Automated Wildlife Recognition

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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 …read more

Ikea Tradfri Hacking

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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 …read more

Ikea Tradfri Hacking

See the original posting on Hackaday

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 …read more

Hackaday Prize Entry: Automated Wildlife Recognition

See the original posting on Hackaday

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 …read more

Friday Hack Chat: Electronics Design And Naming A Puppy

See the original posting on Hackaday

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 …read more

Celebrating a Subscriber Milestone with a Copper YouTube Play Button

See the original posting on Hackaday

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 …read more

Hackaday Prize Official Rules Update

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We have made a change to the Official Rules of the 2017 Hackaday Prize that removes a potential ambiguity in the language. This section details the Announcement of the Challenge Round Results for Challenge Round 2 finalists. The correct language is as follows:

ii. On or around June 19, 2017, Sponsor will select up to twenty (20) Challenge Round 2 submissions to advance to the Final Round based on the six (6) evenly-weighted criteria above.

This section is now consistent with the existing language for the other four challenges. It is important to disclose changes to the official rules which …read more

Biped Bob Walks and Dances

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If you have a few servo motors, an Arduino, and a Bluetooth module, you could make Biped Bob as a weekend project. [B. Aswinth Raj] used a 3D printer, but he also points out that you could have the parts printed by a service or just cut them out of cardboard. They aren’t that complex.

Each of Bob’s legs has two servo motors: one for the hip and one for the ankle. Of course, the real work is in the software, and the post breaks it down piece-by-piece. In addition to the Arduino code, there’s an Android app written using …read more

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