Blog Archives

ESP8266 Prototype – Step 1

Welcome back, I’ve had a chance to work with my ESP8266 module and become familiar with its commands. I used the RealTerm terminal emulation program to issue the AT commands and read the responses. If you’re not familiar with RealTerm you can find a link to it on our Tools web page.

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Requirements Wrap Up

Alright, its finally time to move on to creating our diagrams in the Modelio modeler. But first, I wanted to do a quick wrap up to the 5 part Requirements articles. I hadn’t pointed out in those articles that there are actually two types of requirements. In case you are new to requirements,

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Requirements – Part 5

Welcome back, in this requirements post we have the detailed requirements that were decomposed from the reworked top level requirements. We could probably spend more time trying to make the requirements more elegant but the payoff becomes diminished at a certain point. The requirements stated should be enough to continue on with the next phase of design which will be the SysML model.

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Requirements – Part 4

Welcome back! Well, after putting together the top level Use Case Diagram in the last post, which was derived from the top level requirements, it was easy to see that we needed at least one more tweak to the top level requirements. It was apparent that we could clean up the connections on the Use Case Diagram by extending a sensor and actuator Use Case from a base subsystem Use Case that would handle the common stuff.

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