Fischertechnik Picaxe Draughts Sorter
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Uploader Comments (exartemarte)
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All Comments (6)
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Ace!
What can`t you do with picaxe
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so how does it know the colour?
stdavross666 11 months ago
@stdavross666: There is an infra-red reflective sensor looking down at the platform at the bottom of the chute. It shines infra-red light at the platform and measures the strength of the light reflected back. The level is low for a black draught, high for a white draught and somewhere inbetween for the red platform (= no draught). Thresholds are set in software to distinguish between the three conditions.
exartemarte 11 months ago
@exartemarte I see. Thanks for the reply and nice machine.
stdavross666 11 months ago
@stdavross666 You're welcome, and thank you. If you are interested, there is more detail on my website at exartemarte.me.uk
exartemarte 11 months ago