Create parts with separate power pins

dangerousprototypes.com writes:

Ever wonder how some designs group all the power supply pins in one corner of the schematic? They look organized, and it’s easier to understand how the circuit works because pins are grouped by function. In this tutorial we’ll show you how to make an Eagle part with separate power pins. This can be extended to group pins by function as well.

Create parts with separate power pins – [Link]

Low-cost, low-distortion square to sinewave signal converter

Convert square wave clock signals to low distortion sinewaves – [via]

This circuit derives a pure sinewave from a crystal-controlled clock source by using a ring counter to remove the highest-amplitude unwanted harmonics, and filtering the result with an 8th-order lowpass, switched-capacitor elliptic filter

Low-cost, low-distortion square to sinewave signal converter – [Link]

5 Tips for Using a Multimeter for Your Home Improvement Projects

If you are someone who enjoys doing your own home improvement and you are working with electronics during the process, having access to a multimeter is an absolute must. There are going to be instances where you will need to be able to measure voltage, ohms and continuity and without an electronic multimeter, it will be difficult to determine just what you need to do. Here are a few tips for using your multimeter to perform home improvement projects.

  1. Understand your options – Multimeters are available in different types. These can run from the most basic to the most luxuries, which is also the most expensive. Unless you have highly advanced electronic skills and knowledge, a basic multimeter is going to be just fine and will have fewer features that you need to figure out.
  2. Familiarize yourself with your multimeter – Take some time to examine the multimeter before you use it. When looking at the face of the design you should see three different things – dial, settings and lead ports. These should be color coded which makes it much easier to avoid mistakes when plugging in leads.
  3. Learn the dial settings – As you look at the dial, take notice of the symbols and numbers that surround it. You should see an arrow that points to the right with a plus sign beside it. This is the setting that is used for continuity. The “V

P-FET Reverse voltage polarity protection tutorial

Rectifier circuit with very low voltage drop featuring a P-channel MOSFET  – [via]

Different ways you can protect your circuit from backwards power connections. Diodes, schottky diodes and P channel MOSFETs.

P-FET Reverse voltage polarity protection tutorial – [Link]

Create Eagle parts with pins that have the same name

dangerousprototypes.com writes:

Most chips have multiple power pins that need to be connected to the same power supply, but Eagle doesn’t allow you to give 2 different pins the same name. This short tutorial shows how to get around this and name multiple part pins the same thing.

Create Eagle parts with pins that have the same name – [Link]

Making Your Own PCB – pitfalls and overcoming them

If you start tinkering with electronics, eventually you will want to make your own printed circuit board. In the olden days you could just buy an etching kit at your local radio shack. Now, most electronic projects are much more complex, the boards are much smaller, and you need to deal with 2 layers, surface mount components and vias. Rather than being just another PCB tutorial, this extensive two part overview covers the myriad of problems you may encounter and the methods available for solving these problems.

Making Your Own PCB – pitfalls and overcoming them – [Part1]+[Part2]

Wago 233 – connected by one click!

PCB terminal blocks Wago 233 provide a fast and reliable connection at production and also a very convenient way of installing for end users of your devices.

Perhaps the biggest advantage of Wago 233 terminal blocks is saving of space and a simple installation of wire leads. Pin spacing is only 2.5 mm and a simple pushing of a plastic lever is all that is necessary to insert of a lead.

This way of installation is very simple and intuitive. That´s why the Wago terminal blocks are very suitable even for products, where a user himself must connect leads, for example various security devices, controlling units etc. Usable are leads with a 0,08-0,5 mm2 cross section. Recently we enhanced our stock with next types, that´s why you can now choose from 5 types – 2, 3, 4, 5 a 12-pole. Upon order, we´re able to deliver you even other versions and also models in an orange color (with 2.54 mm pin spacing). Detailed information will provide you the Wago 233-203 datasheet.

Wago 233 – connected by one click! – [Link]

Getting acquainted with the chipKIT programming tool

embedded-lab.com writes:

The overall process of designing a microcontroller-based system is divided into  two parts: designing the hardware of the system, and writing the control software for it. Before the design cycle begins, it is important to have good knowledge of the tools available for the chosen development platform. While we already explored the hardware features of the chipKIT UNO32 board in Exploring the chipKIT Uno32 board, it’s time to look at the software development process. The flowchart below gives an overview of how an application program is developed for the chipKIT board.

Getting acquainted with the chipKIT programming tool – [Link]

Exploring the chipKIT Uno32 board

embedded-lab.com writes:

The chipKIT Uno32 development board is based on the powerful PIC32MX320F128 microcontroller, which features a 32-bit MIPS processor core running at 80MHz, 128K of flash program memory, and 16K of SRAM data memory. The board can be powered via USB or an external power supply. The on-board USB-UART interface provides a communication path between the board and the MPIDE tool running on the PC. MPIDE stands for Multi-Platform Integrated Development Environment and is a complete tool for developing and downloading embedded applications into the chipKIT Uno32 board. Now let’s explore the chipKIT Uno32 board and its on-board features in more detail.

Exploring the chipKIT Uno32 board – [Link]

The C-1 Electric Vehicle (7159)

The number and quality of electric vehicle (EV) options on the market continues to expand, spawning vehicles like the new C-1. Created by Lit Motors, the trick electric motorbike uses gyroscopes for stabilization in much the same way as the Segway personal transporter to keep the rider from falling over, even at a stop without added effort from the rider.

Taking around 6 hours to charge to full capacity, the C-1 can then travel for around 150 to 220 miles without ever using a drop of gas. Top speed is around 120 mph, impressive for any EV. The electric motorbike offers the traditional advantages of a motorcycle; fast speed, good acceleration, spirited cornering and a fun ride; while avoiding their pitfalls.

The rider doesn’t need to worry about balance as that’s what the gyros are for. As for safety, a hard outer shell creates a cocoon around the rider, allowing for car-like safety. Even when struck by another vehicle from the side, the gyroscopic system will work to keep the C-1 from falling over.

Expected some time in 2014, the Lit Motors C-1 will carry a base price of around $12,000 to $14,000, less than a typical home renovation, but undercutting the cost of commercially available electric cars by a significant margin. Due to the small nature of the company, credit buyers will likely be responsible for their own financing.

When seeking bank financing for an alternative powertrain vehicle the applicant needs good credit. The average credit card debt of card users will need to be kept under control as banks will be hesitant to loan out to applicants already saddling heavy debt.

One option for those who would like to get rid of some debt in anticipation of electric vehicle financing is 0 interest balance transfer credit cards. By transferring balance from several cards or other debt sources to a single card with a no-interest policy for one year, monthly payments will come down significantly and come at the convenience of paying to a single source rather than several monthly payments.

The Lit Motors C-1 is the EV to watch out for in 2013 and 2014, proving that thinking outside the box to create a new type of personal vehicle can produce a form of transportation that has never even been conceived of before. There’s tons of electric motorbikes on the market, but the C-1’s innovative gyroscope system makes it stand out. And stand up, on it’s own!