A list of random things going on in my life

A list of random things going on in my life

It’s been a while since I published anything personal on here. Not that I ever really did that, but I’ve been having some blogging guilt lately. I present the following unorganized list of things going on which you may, or more likely may-not find interesting. I tend to get introspective around birthdays that are divisible by five. This is a complete random collection of items. You have been warned.

Continue reading “A list of random things going on in my life”

Developing the CryptoCape at SparkFun Electronics

I’m about to start my second week at SparkFun Electronics as a hacker-in-residence and I’ve made some great progress. I have an initial draft design of the CryptoCape, which will be scrutinized this week by the awesome SparkFun engineers. Also, I’m working on a BeagleBone Black Cape tutorial which should help anyone looking to get started with Capes and setting up the EEPROM. On Wednesday, my last day, I’ll be giving a lunch-and-learn entitled “Crypto for Makers.” There’ll be a short primer on cryptography and then I’ll dive into project ideas involving crypto. I’m planning on ending with a short talk on submarine life, just for fun.

Ok, so this picture wasn't taken at SparkFun.  But I'm using the AtMega328p on the Cape.  Also, working at SparkFun is equivalent to taking a Master's course in Eagle CAD, so expect some nice revisions to the Hashlet!
Ok, so this picture wasn’t taken at SparkFun. But I’m using the AtMega328p on the Cape. Also, working at SparkFun is equivalent to taking a Master’s course in Eagle CAD, so expect some nice revisions to the Hashlet!

If you are in the Northern Colorado area, I’ll be hosting a talk at Loveland CreatorSpace on Tuesday, January 21st where I will describe the hacker-in-residence experience and go into some more details about the CryptoCape and building for the BeagleBone Black.  Space is limited, so RSVP on Meetup.

At Cryptotronix, I’ve made my first international sale! I’ve expanded shipping to Canada and Europe. Check out the Cryptotronix store on Tindie for more details.

SparkFun TMP102 Sensor and BeagleBone Black

This tutorial will show you how to wire and program the BeagleBone Black (BBB) to use SparkFun’s Digital Temperature Sensor BreakoutBoard (TMP102) over I2C.  Many thanks to this Arduino example for the inspiration!

First, you might want to see my BBB I2C references if you haven’t used I2C before.  It’s simply a two-wire interface that requires SDA and SCL.  But you will also need a Vcc wire and a GND (data only communicates on two wires…).  Now the TMP102 breakout board is very good at measuring ambient temperature and it’s very sensitive to small changes around it; if I put my hand next to it I can see the temperature rise.

SparkFun's TMP102 Breakout board (with logic analyzer leads attached.)
SparkFun’s TMP102 Breakout board (with logic analyzer leads attached.)

Continue reading “SparkFun TMP102 Sensor and BeagleBone Black”

My first time soldering

I just received a Sparkfun beginner toolkit complete with soldering iron, stand, solder and other fun stuff.  Just like I learned how to cut an avocado, I watched a YouTube video on how to solder and then gave it a try.  The ATSHA204 Breakout Board is slightly crooked on the pins, but I think the DeadOn RTC came out well?  I have yet to wire them up and test them.  That’s probably the true test. Continue reading “My first time soldering”