Friday, September 20, 2013

OpenXC Hackathon and CO2 Danger

Two weekends ago went to the Ford OpenXC Hackathon at TechShop Menlo Park.  I had fun and learned not to use my recycled air button unless the air outside is bad.  What I tested was the CO2 concentration in the car cabin and found that it increase quite rapidly with the recycled air on.  With two people in the car the CO2 level reached above 1000 ppm (this is the level where adverse affects start) in less than 3 minutes.  You can look at some of the data in the presentation below.

Hackathon Presentation PDF

Tuesday, October 30, 2012

DevFest West at Google

On the 20th I gave a talk at DevFest West at the Google campus giving an introduction to Arduino which I had fun giving.  There were a few requests for the slides I used so I've put them up here.  They were mainly just for reference at a few points during the talk but enjoy!

Thursday, September 20, 2012

Tips for Arduino as a USB mouse or keyboard

For those of you starting to use the newer Arduino as a USB mouse or keyboard (or those that have been using the great Teensy microcontroller) here is a quick tip on your programs.  In your setup() add a safety delay of a few seconds so that in does not immediately start when you plug it in.  The reason for this is that if you want to reprogram it (a very likely occurrence) you do not want the microcontroller taking control and potentially closing your program or rewriting it before you can even upload the new one.  

Tuesday, August 07, 2012

Processing and Android

I've been playing around with using Processing on Android and found (at least on my LG-G2X) that the P3D (OpenGL) rendered graphics is much faster than just leaving it at the default.  Realized this when I saw that the 3d graphics sketches were running much faster than the 2d sketches, but you can still use P3D for 2d sketches and get the speed improvements.

The magic line to have in your void setup(){
size(480, 800, P3D);

Monday, July 02, 2012

Arduino Tabs: Your Friend

The tabs in the Arduino IDE are an underused feature that more people should take advantage of.  You can think of them as just grouping functions or a single function on another page so you don't have to scroll through a giant document to get to the area you are working on.  When the program complies it just rejoins it all together (just be careful with global variables and definitions and stick them in the main tab).  The more people use them maybe the more features we will also get (I'm looking at you find that only finds in one tab, where is your option for search all?)

Monday, March 12, 2012

Terminal Programs for Arduino

I was needing a better serial monitor for my Arduino programs while using Mac OSX and after reading some reviews found CoolTerm and I'm liking it for it's ease of use and the functions I was needing (raw transmit).

Monday, October 31, 2011

Nokia 5110

Trying out the Nokia 5110 LCD screen for a project and so far I'm liking it. I got a couple from Adafruit and used their tutorial to set it up but instead of using their library for it I'm using this one. which has a few more options in font sizes and text location control (left, right, centered).

Monday, March 14, 2011

iPad2 Decals on Etsy

Put up some awesome iPad2 Smart Cover decals on Etsy by artists Mel Olivares and Stevie Schulz. The first ones that are available can be found here and here with more to come in the future. If you are curious what this Smart Cover is go here.

Tuesday, February 15, 2011

Tuesday, January 04, 2011

Emotigraph Site Updates

The Emotigraph site now has build instructions and links to buy and Emotigraph through Etsy (this link) are up, too. Get the early editions now!

Arduino Watch in Instructable eBook!

The Arduino Watch is in the new Instructables eBook, it will be available for various eBook readers and the iPad.

Friday, November 05, 2010


Was just interviewed by CBS News as part of their story on the TechShop and showed off my new creation, the Emotograph! Soon the full site for the Emotigraph will be ready at

Wednesday, October 13, 2010

Arduino Classes at the TechShop

Learn the basics of Arduino this Saturday! I will be teaching introductory Arduino classes at the TechShop in Menlo Park this Saturday (Oct. 16) and
These fun classes will get you started in Arduino even if you have no previous Arduino experience.

Sunday, June 13, 2010

Posts all around for the Arduino Watch!

Welcome everyone from all the sites that just linked in! Just now found that,, and have all posted articles on the Arduino Watch! And don't forget the article.

For the current functions of the watch I would check out the youtube video (or for the embedded version just scroll down).
For the build instructions check out the Instructable.
And for the source code check out the google code page.

Future updates to the code I'm looking at the possibilities of a heart beat sensor and a Tron like lightcycle game, but let me know what you would like to see in new versions.

Thanks everyone for the interest!

Saturday, June 05, 2010

Wednesday, June 02, 2010

The Steampunk Edition

The Arduino Watch: Steampunk Edition was out at Maker Faire but for everyone that didn't get to see it there, enjoy these pictures!
And be ready for the coming Instructable that will teach you how to make your own Arduino Watch!

Tuesday, June 01, 2010

Maker Faire Post Report

I've had a week to recover from the Maker Faire, which was a great success! It is time for a wrap up of the events. The big event for me was the eTextile Fashion Show on Saturday which you can see an article about the show The video below is the full show, my appearance is towards the end of the show at about 4:30 into the video.
This week I'll be releasing the instructable of how to make your own Arduino Watch and pictures of the Steampunk Edition watch.

Friday, May 14, 2010

Arduino Watch Screen Views and Hackaday!

To give a better view of the interface than the youtube video here are most of the current display types. And the Arduino Watch is now on!

Arduino Watch: Biopunk Edition

There is a new video up showing my new Arduino Watch: Biopunk Edition here.
More details and pictures coming and next week the Steampunk Edition will get a video.

Friday, May 22, 2009

Makers at Maker Faire

At Maker Faire there will be many makers with little booths (myself included) filled with great projects they have made. All the booths will be open throughout Maker Faire, but how do you know when they are doing a special demonstration or event? To solve this question I made Makers at Maker Faire or if you need to remember it easier. This is a Google calendar that any maker can add to tell people about their demo or event just by sending a event invitation to the calendar. Then at Maker Faire anyone with a web phone can easily see the schedule and not miss out on the great projects.

Wednesday, April 01, 2009

Triple Updates

Many updates to the Optimized Force site!

There is new Portal themed carves on GameCarve to check out.
At the Wooduino page there is a project connecting the Wiimote to a Wooduino.

And 101 Yogurt is now started were you can find out what to do with all those leftover yogurt lids.

Sunday, March 22, 2009

Welcome the Wooduino!

Check out the first official product from the Optimized Force labs, the Wooduino! The Wooduino is a wood prototyping board for the Arduino microcontroller. Check out the details on the Wooduino site.