Comments for Colin Karpfinger

Comment on The Dropout’s Guide to PCB Trace Antenna Design by shaun cronin

shaun cronin — Sat, 27 Aug 2011 22:41:26 +0000

well done , we design gsm and 3G and have been doing design for 10 years
some of the pcb antenna we purchase are not much chop
We are in the process of starting to design our own ,and unforntuntaly i will have to get my head in the books again, your site make my life just that better , hey well done

Comment on The Dropout’s Guide to PCB Trace Antenna Design by Tim Ambrose

Tim Ambrose — Mon, 15 Aug 2011 19:44:06 +0000

Colin – This is a really great article. Here are my additions. You might want to pull back the solder mask from the antenna to avoid some of the mask losses you might incur at 2.4GHz. When using the network analyzer, you will want to use ferrite beads to isolate the antenna from the analyzer. This will prevent RF currents from circulating on the coax ground connection.

Comment on Ordering PCBs Designed With EAGLE by luke

luke — Tue, 22 Mar 2011 20:09:32 +0000

Thanks Colin. Great tutorial.

Comment on Using the Pololu Servo Controller in .NET by Colin Karpfinger

Colin Karpfinger — Thu, 17 Feb 2011 16:49:11 +0000

Hey Korey, the link was incorrect. Here is the correct link: http://colinkarpfinger.com/pololu/PololuServoExample.zip
Sorry about that!
-Colin

Comment on Using the Pololu Servo Controller in .NET by Korey

Korey — Wed, 16 Feb 2011 17:57:41 +0000

Hi Colin,
Where can I find the example code for the pololu?
Doesn’t seem to work anymore.
Thanks!

Comment on Zero-Op Mercenary Automated Paintball Sentry Gun by .grey

.grey — Thu, 25 Nov 2010 14:13:46 +0000

I wonder if you could post some more specific information. Is the software opensource? Could you post a quick overview of how you designed your targeting algorithm and so on?

Comment on The Dropout’s Guide to PCB Trace Antenna Design by Joby Taffey

Joby Taffey — Fri, 08 Oct 2010 10:48:38 +0000

Great stuff. I’ve just spotted this guide from TI which is handy too:
http://focus.ti.com/lit/an/swra161b/swra161b.pdf

Comment on Zero-Op Mercenary Automated Paintball Sentry Gun by Bob

Bob — Sat, 04 Sep 2010 07:56:05 +0000

Hi, do you actually sell these?

Comment on The Dropout’s Guide to PCB Trace Antenna Design by jay

jay — Sat, 21 Aug 2010 22:36:11 +0000

Its nice article. this the best . I am sure they are more design. keep a good works..

Comment on Ordering PCBs Designed With EAGLE by Ed

Ed — Tue, 10 Aug 2010 09:42:14 +0000

Thanks! My first board is all done, but I’ve spent all day trying to figure out how to package it up to send it to none other than Advanced Circuits. Thanks for the great, straightforward info to get me over the finish line!