Prototype Your PCB On EasyEDA

After you finished your PCB design, you can directly order PCB from EasyEDA. EasyEDA provides fast and cheap prototyping service. They provide online instant quote, fast fabrication and competitive price, which saves a lot of time and money for customers.           PCB:       2-Layer  5cm×5cm  Max                          PCB:     2-Layer  10cm×10cm  Max Quantity: 10 pcs             ...

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Designing and Building the Macro Watch

Three weeks before the Houston Maker Faire Chris came to me asking if we could whip up a low cost giveaway for the faire. I wanted to giveaway something more than a blinky LED badge since that is the typical electronic swag at Maker Faire. It had to be something that the person would wear and would want to show off to other Makers to spread the word about MacroFab. Blinking LEDs are always necessary though. ...

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ARC Digital HD Amplifier (Canceled)

The ARC was designed to bridge the gap between high-end sound quality and the world of digital music. This ultra-compact system provides high-resolution USB audio and high quality aptX Bluetooth audio for an astonishingly detailed sound. Fully integrated with the latest in class-D amplifier technology, the ARC is a complete high-end digital audio system. For a great listening experience and immersive sound, ...

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Analog Ultrasound Range Finder

When I started my career in control systems I was fascinated with the many different ways that machines could be interfaced to the environment they operated in. Limit switches (electrical and optical), encoders, resolvers, strain gauges, thermocouples... the control system engineer had a long list of sensors to choose from. And the list has grown even longer following successful innovations in micro machini ...

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Circuit simulator and PCB design software – EasyEDA

EasyEDA is a free, zero- install, cloud-based EDA tool, designed to give electrical engineers, educators, engineering students and electronics hobbyists an Easier EDA Experience. It is easy to use circuit design, circuit simulator and PCB design that runs in your web browser. Features of EasyEDA: Cool Schematic Capture Draw schematics quickly using the available libraries on browser. Seamless automatic upgr ...

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Graphene could be good for Quantum Computing

Graphene has become an all-purpose wonder material, spurring armies of researchers to explore new possibilities for this two-dimensional lattice of pure carbon. But new research at MIT has found additional potential for the material by uncovering unexpected features that show up under some extreme conditions — features that could render graphene suitable for exotic uses such as quantum computing. The resear ...

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Turn an Old DirecTV Receiver into a Hard Drive

With DVR becoming increasingly common over the last few years, DirecTV has sought to distinguish its offerings on that front with multiple levels of service. At the top of the DirecTV DVR receiver options, the Genie offers a huge array of features on a powerful piece of hardware. You can get the newest Genie by signing up for DirecTV using www.SaveonTVDirect.com. For the average user, this means a better vi ...

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PICMAN prototyping board using PIC18LF4553

For a long time now I've been wanting to make my own microcontroller-based prototyping board. My original motivation was the unjustified high costs for even the simplest boards (a basic Arduino for $30 - why???) and the challenge of designing something that anyone can make at home within a few hours, with parts that can be cheaply obtained on eBay. Eventually, I came up with the PICMAN. It is: Based on Micr ...

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PIC PROGRAMMER MkV using PIC12F629

PIC Programmer MkV is designed to get you into PIC Programming for just a few dollars. It uses just 12 components. Most of them will be in your "junk-box" and the PC board is a small piece of matrix board. It's the cheapest way to get started. As well as PIC PROGRAMMER MkV you will need these 4 things: 1. A desk-top computer with DB-9 serial port. (This programmer will not work on a lap-top computer and may ...

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