Hardware Engineering Internship (Summer 2012)

Cody Cooke8/9/2012

Digi International

About Me

• Iowa State University– Senior in Electrical Engineering

• 1st year intern• Originally from White Bear Lake, MN• Played hockey for 15 years

Hardware Engineering Mentors

• Primary Mentor:– Nathan Herman

• Secondary Mentors:– Brad Ferguson– Matt Larsen– Nathan Carlson– Dan Skenzich

• Manager:– Frank Artner

Projects Worked On

• X2e Variant creation, Prototyping, and Testing• U-Blox GPS Python Scripting and GPS Simulation• WVA Daughter Board Assembly• X5R Proof of Concept, Assembly, and Homologation

Testing• X4/X4H Cellular Modem replacement and cellular Pre-

Scan using CMU200• Tank Monitor LED Testing • Other little projects around the office for people

X2e CADStar Variants• Worked with Dan to get the

XBP24CZ7PIS-I085 added into the Digi Libraries in Cadstar

• Created an Xbee Pro variant for both X2e with and without Wi-Fi

• Worked with Dan and Van to get the ENG and MFG files into Pending

• Filled out a Prototype Request for the -04 variant (US with Wi-Fi) to do collocation testing

X2e Collocation Testing

• After Prototyping, did a collocation test on both an -04 variant and a -02 variant

• Report the information to Brad and David so he could move forward with the ECO

U-Blox GPS and Python Scripting

• Worked with a U-Blox GPS engine and wrote a python script for reading the buffer

• Used the script to test if we were picking up valid coordinates

WVA Daughter Board Assembly

• Started with the bare PCB and soldered on all of the components

• Got graded by the Nathan’s on my work and what I need to look for

X5R

• Assembled the proof of concept for Nathan Herman

• Acquired MAC information• Mounted the X5R onto the

sheet metal• Installed the SIMs• Worked with Will to create

the homologation script for Lenny to test with

X4/X4H

• For the X4s and X4H, installed cellular modems

• Did CMU200 Testing on a few X4H’s to make sure they passed testing at Digi

Tank Monitor/IDF Formatting

• Worked with Matt to wire up the 55m so that we could test our new container

• Did LED testing to come up with an alternative to Red/Green Bi-color LED

• Worked with the mechanical team with getting mounting holes imported into ProE

Key Learning's

• Documentation for everything– i.e. variants, DVT testing

• Asking Questions and Using Resources• Developing a learning process that works for

you• Staying energized and enthused

Question and Answer