Jimmy Hedman is a professional high performance computing (HPC) geek who works with large systems where size is measured in number of racks and cores. In his spare time, he goes in the opposite direction and focuses on smaller things, such as BeagleBone Blacks and Arduinos. He is currently employed by South Pole AB, the biggest computer server manufacturer in Sweden, where he is a Linux consultant with HPC as his main focus. This is the first book Jimmy has worked on, but hopefully not the last.
Pradumn Joshi is currently pursuing his Bachelor's degree in Electrical Engineering from NIT, Surat. He is an avid elocutionist, tinkerer, and debate enthusiast. He is also interested in economics, freelance writing, and western music. His area of technical interest lies in open source hardware development and embedded systems.
Sudar Muthu builds robots as a hobby, and Arduino is his playground. He discovered the joy of hardware programming through Arduino around 4 years back, and since then, he has been using it for his various pet projects. He has created a lot of libraries for Arduino and also currently maintains a Makefile for Arduino that helps you do professional Arduino development.
He conducts workshops about Arduino and robotics and has given talks at various conferences about hardware programming. He blogs about his experience in hardware programming and also about his various projects at http://hardwarefun.com.
Karan Thakkar is a hybrid mobile developer at Tata Consultancy Services Ltd., with experience in a variety of enterprise projects based on cross-platform frameworks/libraries such as EnyoJS, Sencha Touch, Backbone.js, and PhoneGap. He graduated from Shivaji University with a degree in Electronics and Telecommunication. His blog can be found at http://karanjthakkar.wordpress.com/blog/. He has written a couple of interesting and highly viewed articles on OpenCV and Arduino. Being a robotics enthusiast, he rarely stops boasting about how he had the chance to tinker with the humanoid robot, Aldebaran Nao, during an internship.