This is a low cost USB-based JTAG programmer for ARM processors based on the OpenOCD platform.
If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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It's inexpensive as all get-out and it does work as well as the big-boys for a wide range of tasks (Just don't expect it to be a barn-burner for the same.)