Hi everyone, not that I knew about a good camera for this, but since it somehow fits the topic, let me just briefly say a few words to an alignment software I made some time ago.
Under http://hb9etc.ch/hg/aligner you can find some code which allows a cheap camera to be used for automatic alignment. The program uses OpenCV to grab frames from a camera and can then locate a template image inside the captured frame to determine the position of some prominent structure. We use this on our dispenser to automatically align to PCB traces. It is not especially fast or reliable when it comes to different lighting conditions, but it works quite well. A simple textual socket-based interface allows for remote control of it, so that a GladeVCP (which controls most of the special dispenser features) can use it during the production process. A python module providing some abstraction can be found in the src/ directory as well. Feel free to comment or ask questions about it. Maybe it's of use for someone else. Cheers, Philipp
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