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GPS

Former Member

I was thinking about making a radio control boat about 30 inches (76 CM) long.  I would want to use the R/C unit to set a course then let the GPS to keep it on course.  I would want it to also be able to return to the launch point when I give it a signal.

It seems that this should be possible using an arduino, R/C servo and a GPS unit

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    An arduino could do it but with limited ram etc, it may be reduced to a very basic set of way points and not tracking intermediate spots. going home would be a case of either reversing the ay point order or simple line of sight back to the starting point. correction etc on the way would be a simple matter of speed, current location and calculating the correction.

     

    This would take some cleaver programming and possibly in raw C or even assembly rather than wiring in order to get better memory usage and speed, or using an arduino MEGA2560 solving the RAM and flash issue. the overhead of having an SD card on an Arduino UNO would outway its benifits in this situation as the drivers and required bufferes will consume a significant part of the available flash and Ram

     

    A PI would work, just with more power consumption. It may be worth looking at a Arm Cortex Mx board as an option like the SAML21 from atmel

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    An arduino could do it but with limited ram etc, it may be reduced to a very basic set of way points and not tracking intermediate spots. going home would be a case of either reversing the ay point order or simple line of sight back to the starting point. correction etc on the way would be a simple matter of speed, current location and calculating the correction.

     

    This would take some cleaver programming and possibly in raw C or even assembly rather than wiring in order to get better memory usage and speed, or using an arduino MEGA2560 solving the RAM and flash issue. the overhead of having an SD card on an Arduino UNO would outway its benifits in this situation as the drivers and required bufferes will consume a significant part of the available flash and Ram

     

    A PI would work, just with more power consumption. It may be worth looking at a Arm Cortex Mx board as an option like the SAML21 from atmel

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