Help with water speed please

[Acetronics2]

Hi, Ed

Hope your speedo just is here " for the show " as its lack of precision never will allow any usable positionning info ( through math. integration ).

BTW you already DO have your formula @ #4 ...

Alain

[Ramius]

Hi Alain!
Thank you and Happy holiday's! The only way to work with positioning would be limited to the surface with the use of GPS. The catch is that once you are underwater, GPS is useless. http://www.eagletreesystems.com/inde...product_id=131 shows their boat speed sensor. As for a formula I think maybe you meant the formula referenced in #2? Again my math skills and understand of how the math works is seriously lacking especially when trying to even begin to write the code for a PIC.

Best, Ed

[Acetronics2]

Hi Alain!
Thank you and Happy holiday's! The only way to work with positioning would be limited to the surface with the use of GPS. The catch is that once you are underwater, GPS is useless. http://www.eagletreesystems.com/inde...product_id=131 shows their boat speed sensor. As for a formula I think maybe you meant the formula referenced in #2? Again my math skills and understand of how the math works is seriously lacking especially when trying to even begin to write the code for a PIC.

Best, Ed

Hi, Ed

you're right was @Post #2 ...
If I'm right ... you're begging for the full PBP calculation ...

Sorry, but I won't be able to take care of it before next year ... as I'm the WHOLE family cook for the moment.

Please, Understand it needs ... a little amount of time, as a retrieve table has to be calculated , and you need the full working subroutine ...

BTW ... knowing which processor you use could be necessary ...

Alain

[Ramius]

Hi Alain!
Thank you please take care of the family first. I will not even have a sensor to test until after the first of the new year. Probably a MCP3202 A to D and an
18f1320 although I am open to any and all suggestions. I can test the sensor in a tub of water much like part of a wooden barrel with an arm that spins the sensor in the water and there is a stop watch with a switch to start and stop the stop watch for the time part. I have 6 different speed for the motor that drives the arm that spins just above the water with just the sensor pick up tube in the water. I hope you and your family had a great holiday and that everyone will have a happy and prosperous new year!

Best, Ed