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21 January 2009 Guard II is now up and running. I'll try to make a video in the next few days but it's time consuming. This is a stationary bot that listens and "looks" for targets. When it finds one it shoots a ball at them. Overall, this has worked well for me. It came together quickly, and unlike Guard, the design of both the bot and its program are my own. The ultrasonic problem was a simple fix in the end, but the nxt-g interface made it hard to spot. I hadn't created a control link ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/guard-ii