Home Blog  





17 Jul 2013

F2VIVQ0HIWHR2WJ.LARGE

steveastrouk @ instructables.com writes:

This is useful tip for anyone making or using surface mount components on PCBs. It relies on access to a laser cutter, so if you don’t have one, look away now….. I cut a plastic stencil on the laser, align it with the PCB pads and then squeegee a thin layer of solder paste through the holes. Peeling away the stencil will leave a perfect pattern of pads with the correct amount of solder on each one. I have just successfully used this process on components with a 0.025″ pitch (0.65mm) – that’s VERY small,

Soldering stencils for DIY circuit boards - [Link]

7 Jun 2013

Copia-de-DSC00933-624x318

Jesus Echavarria @ jechavarria.com writes:

I develop this MCP23017 Brekout Board to interface a 2×16 LCD display with any microcontroller using a standard I2C bus. Typical 2×16 displays needs at least 6 lines to work (when working in 4-byte mode); in some cases, this will be prohibited for some microcontrollers. With this board, you can control it with only two lines (I2C bus) and, by the same price, obtain a few more IO’s. I use the MCP23017 I2C expander as a bridge. This integrated circuit provides 16 IO’s over a standard I2C bus. All the pins can configure as inputs or outputs independently, and supports high speed I2C (up to 1,7MHz). Also, this device has three hardware address pins that allow connecting up to 8 devices in the same bus. The rest of the features can be seen in the datasheet.

MCP23017 Brekout Board - [Link]

2 Jun 2013

pcb

By: Alex Danovich,President San Francisco Circuits

We live in an exciting time where we see a resurgence in electronics as a hobby. Mass production has wiped out a generation or two of kids learning to build radios from scratch with their mom or dad. In the good old days, not sure when, you had companies like Heathkit walk you through building a full size color TV at home, for example. “Yes, I made that!” you’d proudly exclaim to yourself after hours of work.

What’s causing this hobbyist resurgence?

  • Television shows such as How it’s Made, Mythbusters and other programming on TLC.
  • Websites such as instructables.com, hackaday.com, and specialized hobbyist blogs.
  • Interest in RC cars, robotics, gaming, computers etc.
  • Advent of Arduino boards, modules and free software.
  • Open source software/hardware.
  • The whole maker movement in general.

 

So what does this have to do with making circuit boards? Read the rest of this entry »

21 May 2013

docu-front

Philip designed a simple component size and silkscreen reference board:

since I kept checking old projects to figure out which silkscreens worked, and which didn’t, I made myself a simple reference board. I also included some common SMD component sizes, just to keep me from thinking 0402 was a viable default size.

[via]

Simple silkscreen reference board - [Link]


2 May 2013

figure-1-components-with-bottom-only-terminal-leads

Tom Hausherr’s blog is dealing with component package technology and libraries standards and providing lots of great and clear information. If you are designing your own libraries for your next project you definatelly have to check it out!

Tom Hausherr’s Blog - [Link]

24 Apr 2013

PCBWeb00

PCBWeb01

A new PCB design web application was released this last week called PCBWeb. The website states that PCBWeb is a free browser-based CAD application for designing and manufacturing electronics hardware.  The tool is currently released in BETA and allows you to create a schematic, full circuit board layout, and then export to gerber format for manufacturing. The application is supported on Windows and Mac using Silverlight.

Features include:

Schematic Capture

  • Multi-sheet schematics
  • Custom Ports
  • Digi-Key Part Library (+100K components with symbol and footprints)
  • Cut/Copy/Past and full undo/redo

PCB Layout

  • Multi-layer board
  • Support for all units (mm/inch)
  • copper pour
  • DRC (design rule checking)
  • Gerber Export

Bill of Material Manager

  • View real-time pricing
  • Order Links

PCBWeb – Free Online PCB Design Software - [Link]

14 Feb 2013

Eagle-wiki-swapping_route-b-186x300

Eagle PCB Tip: Pin and Gateswapping

To optimize board routing, there are times that interchanging pins or gates is necessary. Recent article on Dangerous Prototypes gives us a full description and procedure to make this happen in EAGLE.

Eagle Tip: Gateswap and Pinswap tool - [Link]

9 Feb 2013

QVwlVn7

Here’s an SVG image to Eagle polygon importer called svg2poly. It seems like an excellent alternative to the BMP importing plugin included in Eagle default package. [via]

Surprisingly often, I find myself wanting to import vector images into eagle, and have them appear as polygons – usually for silkscreen. Whilst importing vectors as lines is practical – although ridiculously awkward – up until now I haven’t found a single practical way to import a vector drawing as polygons.

Importing SVG images as polygons Into Eagle - [Link]

22 Jan 2013

Here’s a tutorial on how to automatically generate Eagle parts from manufacturers’ BSDL files. These files are available from some manufacturers and include tables listing pin names and numbers. [via]

Simplify Eagle library part creation from BSDL files - [Link]

21 Jan 2013

Ever want to print your own PCBs for high power LEDs, other SMT power devices, but regular PCBs can’t sink enough heat? Fear no more! You can print them right onto silicone thermal tape!

PCBs on thermal tape – Put them on heat sinks! - [Link]



 
 
 

 

 

 

Search Site | Advertising | Contact Us
Elektrotekno.com | Free Schematics Search Engine | Electronic Kits