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15 Jul 2014

Eagle_v7

by cadsoftusa.com:

The award winning EAGLE is a powerful and flexible PCB design software offering high level functionality of expensive commercial circuit board design software at a fraction of the cost for over 20 years. EAGLE offers the three modules: Schematic-Editor, Layout Editor and Autorouter embedded on one single interface. EAGLE is easy to learn, easy to use and easy to buy. It runs on Linux, Mac and Windows and allows feature enhancement, such as simulation, 3D-visualization, data import and export and self defined commands, through User Language Programs (ULP’s) which are partly integrated in EAGLE and available at the download area.

EAGLE Version 7 is released! - [Link]

15 Jul 2014

etch6

by homediystuff.com

Making your own PCB boards for DIY electronics projects is not difficult. Doing so as a DIY project is extremely handy and allows almost anyone to custom design one-off, or small batch circuit layouts relatively quickly and cheaply, without the need for the volumes or costs involved in using the services of professional circuit board manufacturers. With care, DIY PCB project results are usually of extremely high quality and are very satisfying. Even more interest can be added to projects when printed circuit boards are combined with CNC cutter designs for shaping of the circuit boards.

There are various different methods for making PCB boards. Each method has various pros and cons, with most considerations being linked to cost, quality of finished product, accuracy required for fine circuits and availability of chemicals and materials.

DIY Etching of Printed Circuit Boards (PCB) - [Link]

8 Jul 2014

yeeemif1

by Chang Fei Yee @ edn.com:

This paper discusses the essential steps taken to achieve a low-EMI prototype before conducting compliance tests in an anechoic chamber. These steps include electronic circuit design for minimal radiation, and pre-compliance inspections. The pre-compliance inspections include simulated EMI analysis of a printed circuit board (PCB) layout model using 3DEM software, and a near-field EM scan of the prototype PCB using a spectrum analyzer (SA). Success is confirmed by anechoic testing.

Build low-EMI prototypes: The essentials - [Link]

23 Jun 2014

Webench

by elektor.com:

Any experienced engineer will tell you that power supply design is not a trivial exercise and bad design often leads to poor system reliability. For more than a decade now engineers have been able to use the Texas Instruments WEBENCH design tools to streamline power supply design.

The online software allows designers to quickly create, optimize and simulate a complete design using calculation algorithms and the SPICE simulator tool provided by the WEBENCH Power Designer software. Careful PCB layout can also be critical for power supply performance. Texas Instruments have now added PCB Export to the WEBENCH suite of design tools. This allows engineers to run electrical and thermal simulations to characterize their designs, create a power supply PCB layout, and export it to Altium, Cadence Design Systems, Inc., CadSoft Computer, Mentor Graphics and RS Components CAD platforms.

According to the press release WEBENCH Power Designer together with PCB Export will help reduce PCB board design time from hours to minutes and take into account best layout practices to reduce noise and thermal issues.

WEBENCH now with PCB Export - [Link]


6 Jun 2014

pcbshopper

by Michael Dunn:

Thanks to software engineer and hardware hobbyist Bob Alexander, next time you need a batch of PCBs, make his PCB Shopper site your first stop. Enter your basic board specs, like size, layer count, and quantity, and out pops a list of vendors (from China, USA, Canada, & Germany) along with prices and delivery time (BTW, here’s another Canadian source that hasn’t made his list yet: Bittele/7pcb). The site also has a nice little summary of CAD tools.

pcbshopper.com – Find the cheapest PCB manufacturers - [Link]

3 Jun 2014

pcb_osh_600px

Get a professionally manufactured PCB for your design completely FREE!

We are happy to announce our new PCB giveaway program for the OSHW community. We will professionally manufacture 5 pieces of your PCB design and ship them to you worldwide completely free. We just ask to publish your Open Source design on Electronics-Lab.com projects section (under your name) and you will get your PCBs for free in 15-25 days (depending on destination). All designs submitted will be manually reviewed and if applicable will be processed for manufacturing.

The process is simple:

  1. Submit your design on the email below (Cadsoft EAGLE files in ZIP are preferred)
  2. We review your design based on how well it’s designed, how useful it is for the OSHW community
  3. You get notified by email if your design is accepted or not
  4. We process your design for manufacturing
  5. We publish your project here on Electronics-Lab.com
  6. You receive your PCB copies in 15-25 days

Some rules apply:

  • You must be the project owner (your project will be published with your name)
  • Your PCB can be 1 or 2 layers (max dimensions 10x15cm)
  • Your PCB design should meet manufacture specifications (we will let you know if your board meets specs)
  • You will get 5 boards for free + free worldwide shipping
  • Your design should be clean and pass most of ERC and DRC rules (electrical/design rule check)
  • All projects submitted should have at least: Schematic, PCB design, description / diagrams, code if available (photos are welcome)
  • CadSoft Eagle is the preferred CAD software to design your PCB (exported Gerber files from other software will be accepted)

Submit your projects NOW on webmaster @ electronics-lab.com (subject: Get your PCB for Free). You will get notified if your PCB meets minimum design specifications to participate on PCB giveaway program.

Feel free to ask any questions below.

Happy PCB designing!

UPDATES – Projects approved so far:

pcbs_th

28 May 2014

Ben is always looking for new tools and processes to help with all the projects he builds. He’s got a CNC mill, laser cutter, and a 3-D printer, but hasn’t found a way to whip up a PCB at his shop. He’s hand wired many circuits, but this can be tedious. He’s designed PCBs in Eagle and sent them off for production at a board house, but this doesn’t help when he wants a PCB the same day. In this episode, Ben experiments with three methods of PCB etching and shares the results.

Let’s Try PCB Etching! - [Link]

23 May 2014

687474703a2f2f626c61636b2d656c656374726f6e6963732e636f6d2f626c6f672f77702d636f6e74656e742f75706c6f6164732f323031342f30332f746f702e706e67

An open source PCB ruler by Hemal Chevli, that is available at Github. [via]

PCB ruler with different foot prints ,SMD proto-typing area, tables, various AWG size holes and inches and cm scale.

Open source PCB ruler v1.0 - [Link]

6 May 2014

MC_AN18.15

Design your PCB involving QFN or DQFN packages with this App note from Microchip.

Successful implementation of QFN and DQFN packages requires special consideration for printed circuit board (PCB) layout and solderpaste stencil production. This application note describes the important items to consider.

QFN packages are physically robust, thermally efficient, and occupy much less PCB space than equivalent QFP packages. They generally have superior lead inductance characteristics. They also present some particular design constraints. QFN packages generally have a row (QFN) or two (DQFN) of perimeter pads (“pads”) around a larger central pad (“flag” or “Epad”) encapsulated in a plastic body. These packages are surface-mounted to the target system PCB by a solder reflow process.

[via]

App note: PCB Design Guidelines for QFN and DQFN Packages - [Link]

30 Apr 2014

IMG_20140321_172658_356

by Dave Young

Anyone who has learned a layout package like EAGLE and sent a board off to a fab knows the trepidation felt when submitting the final gerbers. It doesn’t matter if the order is for 3 PCBs or 3,000 PCBs. The time lost from an error can ruin a project’s momentum, especially if it is a boneheaded error.

[..]

There is a better way to check all of the footprints with a layout: Paper PCB Protos. This low-tech technique only takes an hour, but can provide 100% confidence in the footprints checked. Thanks to proper scaling of the PCB, it is possible to create a PDF and print out an exact representation of the board. The designer can then place parts on the paper to quickly determine if a component’s footprint will be suitable, at least for a pilot production build.

Using Paper Protos to Check Footprints with EAGLE - [Link]

 



 
 
 

 

 

 

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