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Arduino map6/18/2023 (2) making different linear combinations of the straight analog value and the squared value: (1) taking the analog value and squaring it (using long as the number can get pretty big) In the stuff I posted, the four curves are generated by: Again, for joystick response, the thing we want is to get the right "feel" and that's something we're going to have to find out by trial and error. Same for things like polynomial curve fitting - computation intensive and overkill as well unless you want to precisely fit a curve who's characteristics you already know. For a real-time application, such as modifying joystick response, that may not be the best choice. That is a fine way to create an exponential curve, if you can afford the time and memory it takes to do floating point calculations. It's probably not the most efficient code for this, so any suggestions would, of course, be welcome. (6) re-map Throttle and Steering in accord with a Speedpot connected to third analog input pin.Īs the results of these calculations are fed into a CANbus network, there are probably some lines of code that refer to sending CAN messages, and I have not included the #define statements or variable declarations that precede all of this, but this does illustrate one way that one can get curving and scaling and so on using entirely integer arithmetic. (5) re-map the throttle axis to a new when going in reverse, and re-map the steering axis, with different steering sensitivities when going forward or revers. The result to this point is illustrated in the attached graph. (4) applies five levels of scaling ranging from linear to squared. (3) maps the voltage to a -1000 to 1000 scale (distinguishing between forward/reverse or left/right). (2) establishes a deadband as no joystick will perfectly self-center. (1) reduce output to 0 for voltages 4.95 V as that indicates a broken or shorted lead or internal joystick failure. \appdata\roaming\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9\xtensa-lx106-elf\include\c \4.8.2/tuple:1088: undefined reference to `std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base
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