Terrabots / Mbed 2 deprecated turn_pot

Dependencies:   Motor mbed

main.cpp@1:532b7273ebc6, 2016-10-24 (annotated)

Committer:
simplyellow
Date:
Mon Oct 24 21:18:32 2016 +0000
Revision:
1:532b7273ebc6
Parent:
0:d97c87993116 
more measurements and calculations;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simplyellow 0:d97c87993116 1 #include "mbed.h"
simplyellow 0:d97c87993116 2 #include "Motor.h"
simplyellow 0:d97c87993116 3
simplyellow 0:d97c87993116 4 //Motor turn(p23, p28);
simplyellow 0:d97c87993116 5 AnalogIn pot(p15);
simplyellow 0:d97c87993116 6 Serial pc(USBTX, USBRX);
simplyellow 0:d97c87993116 7
simplyellow 0:d97c87993116 8 float value;
simplyellow 0:d97c87993116 9 float angle;
simplyellow 1:532b7273ebc6 10 float zero;
simplyellow 0:d97c87993116 11
simplyellow 0:d97c87993116 12 /*
simplyellow 0:d97c87993116 13 the angular range of the pot is 66.8 degrees
simplyellow 1:532b7273ebc6 14 so +/- 33.4 degrees
simplyellow 0:d97c87993116 15 the average float range is 0.2226
simplyellow 1:532b7273ebc6 16 so +/- 0.1113
simplyellow 1:532b7273ebc6 17
simplyellow 1:532b7273ebc6 18 potentiometer source link
simplyellow 1:532b7273ebc6 19 http://www.alphapotentiometers.net/html/16mm_pot_6.html
simplyellow 0:d97c87993116 20 */
simplyellow 0:d97c87993116 21
simplyellow 0:d97c87993116 22 /* DumpTruck pot measurements
simplyellow 0:d97c87993116 23 0.274 to 0.498 -> 0.224
simplyellow 0:d97c87993116 24 0.272 to 0.495 -> 0.223
simplyellow 0:d97c87993116 25 0.277 to 0.498 -> 0.221
simplyellow 0:d97c87993116 26
simplyellow 0:d97c87993116 27 */
simplyellow 1:532b7273ebc6 28
simplyellow 1:532b7273ebc6 29 int main() {
simplyellow 1:532b7273ebc6 30 zero = (float) pot; // this will be the center, 0 degrees
simplyellow 1:532b7273ebc6 31 while(1){
simplyellow 1:532b7273ebc6 32 value = (float) pot; // assuming turning wheels are in back
simplyellow 1:532b7273ebc6 33 angle = (value - zero)*300; // negative = left turn
simplyellow 1:532b7273ebc6 34 pc.printf("%f\n\r", angle); // positive = right turn
simplyellow 1:532b7273ebc6 35 wait(0.2);
simplyellow 1:532b7273ebc6 36 }
simplyellow 1:532b7273ebc6 37 }