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I have marked my anchor chain every 10 meters, but I think it must be possible to have a program that counts the length of the chain that is out.
Has someone made such a program and connected to OpenPlotter.
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Many newer windlass have the ability to put in a magnetic sensor to count turns. Once installed , you can hook them up to your pi, or other remote sensing device like the ESP8266 or and Arduino. A little code and you are in business.
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YESS, please someone please write an Counter for the ESP. My Old Diesel needs 600-1100 U/Min.
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While this is technically easy to implement, it is unneeded complication. What purpose does it actually serve? Do you think you can somehow factor this into the anchor alarm in a useful way?
Wouldn't accelerometers attached to the anchor itself, or a strain meter to measure the force/angle on the anchor chain itself be more useful?
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Actually, it would be nice when short handed. I have an anchor control switch at the helm, and knowing how many feet I let out when anchoring would be great. Three inputs needed - one counter from the magnet, one enable from each of the relays to increment or decrement the counter. There just have been higher priorities on the boat maint list.