Colin Karpfinger

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Slab Desk

On April 18, 2016, Posted by , in Uncategorized, With Comments Off on Slab Desk

I wanted to build a new desk for my room that looked nice but was substantial and sturdy feeling. After making tons of furniture with iron pipe fittings I decided to try something new. The legs are a mix of minimal modern designs and saw horses. The more modern legs seemed…

Functional art with Arduino: A painting that displays the surf report

On August 27, 2014, Posted by , in Uncategorized, With Comments Off on Functional art with Arduino: A painting that displays the surf report

  I made a piece of functional art with the LightBlue Bean! It uses python to pull the report, and the LightBlue Bean (essentially a BLE Arduino) to receive the data over bluetooth low energy and set the LEDs. The general conditions are indicated by the color of the LED…

Rusty Forks (not spoons)

On January 27, 2012, Posted by , in Uncategorized, With Comments Off on Rusty Forks (not spoons)

It’s cool living blocks from the ocean, except in San Francisco, where that just means cold-ass fog.  Being San Francisco, that could also be cold ass-fog.  Either one is bad for your motorcycle.  (for all you TLDR people, note the hyphen) I replaced my front forks on my Kawasaki Ninja…

Announcing Thumbies – Solving all your iPhone gaming frustation

On February 17, 2011, Posted by , in Uncategorized, With Comments Off on Announcing Thumbies – Solving all your iPhone gaming frustation

I’m quite happy to announce that Thumbies are now available nationwide at BestBuy locations, and online! Thumbies Standard Pack at BestBuy – $14.99 Thumbies Pro Pack at BestBuy – $19.99 The iPhone was clearly not built specifically for gaming.  Not having tactile buttons that you can feel is a major…

The Dropout’s Guide to PCB Trace Antenna Design

On July 27, 2010, Posted by , in Uncategorized, With 14 Comments

“There are 2 ways to learn antenna design.  One way is to go to grad school.  I’ll teach you the other way” -A mentor of mine Engineers love to refer to wireless as ‘black magic’.  Which is partly true.  But with the right tools and the willingness to fuck it…

New Punch Through Design Website

On June 22, 2010, Posted by , in Uncategorized, With 2 Comments

I had the Punch Through Design website re-done, and I’m loving the clean new look.  I was referred to the designer, Norm Orstad of Orstad Design, by a mutual friend, and I’m very happy with the results.  Now I need to work on publishing the other projects we’ve completed! Click…

Clients Mentioned in Minneapolis Star Tribune

On June 15, 2010, Posted by , in Uncategorized, With Comments Off on Clients Mentioned in Minneapolis Star Tribune

I’m happy to see a couple Punch Through Design clients getting press.  Both Pedal Brain and Shepherd are mentioned in the article: The iPhone and the iPod Touch, it’s a pretty cheap platform and it has a lot of power behind it,” said Colin Karpfinger, owner of hardware and software…

Ordering PCBs Designed With EAGLE

On June 14, 2010, Posted by , in Uncategorized, With 6 Comments

So you’ve figured out EAGLE’s design quirks, you’ve routed all your airwires and you’re wondering what next.  This guide will take you from a .brd file in EAGLE to a professionally made PCB.

Moving Cross-country via UPS / Fedex

On February 25, 2010, Posted by , in Uncategorized, With 1 Comment

Californians say ‘Bagel’ incorrectly

Zero-Op Mercenary Automated Paintball Sentry Gun

On May 20, 2009, Posted by , in Uncategorized, With 2 Comments

Like the best of projects, this started with a question- “I wonder if it’s possible…”. It turns out the answer is YES!, but not without a lot of hard work.  This project alone was my crash course in C++, Linux, Computer Vision, Servo Control, and designing circuit boards.  I can’t…