![]() ![]() The task of the second element, the loader mechanism is to identify the colour of the ball, and to let only one ball at a time through to the next stage. First there is the container, which holds the balls that are going to be sorted. On an abstract level the ball sorter consists of four elements. The resulting robot can be seen in the image on the right. I finally ended up with the loader mechanism, which also will be described further on in this article. A lot of things I came up with for this didn't work consistently, got stuck regularly or would throw the balls all over my floor. The hardest part was to design something that would allow only one ball at a time to pass. The first elements I came up with were the rotator and the container, which I will describe later on. The design process was very organic, trying and building parts of the machine, seeing if they would work. The first robot I designed and built myself is a ball sorter. ![]() If the black pegs are not being hit at the right time (if you think the hitter is swinging slightly too early or too late), you can try adjusting the hitting delay by using the left and right arrow buttons on the NXT. ![]()
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