Hi everyone, I'm currently developing an application counting bottles on a transportation system. I'd like to use the photo sensors on the tmote. But it's quite hard for me to detect a bottle passing by without using an extra light. I've also played with a white LED and try to trigger on the reflexion of the bottles but didn't manage to count all the bottles or I got two or more triggers per bottle. My current approach lookes like that: I'm sampling the photo sensor a 10ms the compare the last two values with the current one and if the present is about 10% bigger than the former one I'll set a flag (high flag) and the go on sampling and wait for some value where the present value is about 10% smaller than the former ones. It works ok but as I was telling you before the results are not as good as they should be. Furthermore I think with sampling at 10ms there's also a lot of power consumed by the microcontroller.
Could anyone propose a differet approach to me? Thanks a lot Greetings Christian _______________________________________________ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
