Electronic Carb Sync Tool

long val1, val2, val3, val4 = 0; int count = 0; void setup() { Serial.begin(115200); } void loop() { //increment the averaging counter count += 1; //collect sensor values and sum with previous value val1 += analogRead(A0); val2 += analogRead(A1); val3 += analogRead(A2); val4 += analogRead(A3 ); if (count > 100) //If we've collected data for 1 second, { //average the summed values and apply calibration values //calibration values are found by running the code with the sensor exposed to atmosphere and making them all match. val1 = val1 / count + 10; val2 = val2 / count - 2; val3 = val3 / count; val4 = val4 / count - 3; //calculate average of the four sensors float avg = (val1 + val2 + val3 + val4) / 4; //send the percent difference of each sensor from the average. Serial.print(((val1 - avg) / avg) * 100); Serial.print(" "); Serial.print(((val2 - avg) / avg) * 100); Serial.print(" "); Serial.print(((val3 - avg) / avg) * 100); Serial.print(" "); Serial.print(((val4 - avg) / avg) * 100); Serial.println(" "); //reset the counters and values count = 0; val1 = 0; val2 = 0; val3 = 0; val4 = 0; } }

int count = 0; long sVal[2][4]; bool firstRun = true; long avg = 0; //smoothing weight, higher is less smoothing #define weight 0.75 //define this for no smoothing, average only //#define PAVG //calibration vlaues #define cal1 1 #define cal2 3 #define cal3 0 #define cal4 15 //calibration values are found by making all the output values match while running //the code with PAVG defined and the sensors exposed to atmosphere. void setup() { Serial.begin(115200); } void loop() { //increment the averaging counter count += 1; //collect sensor values and sum with previous value, add in calibration value sVal[1][0] += analogRead(A0); sVal[1][1] += analogRead(A1); sVal[1][2] += analogRead(A2); sVal[1][3] += analogRead(A3); if (count > 150) { //average + apply calibration sVal[1][0] = sVal[1][0] / count + cal1; sVal[1][1] = sVal[1][1] / count + cal2; sVal[1][2] = sVal[1][2] / count + cal3; sVal[1][3] = sVal[1][3] / count + cal4; #ifdef PAVG //print basic averaged values Serial.print(sVal[1][0]); Serial.print(" "); Serial.print(sVal[1][1]); Serial.print(" "); Serial.print(sVal[1][2]); Serial.print(" "); Serial.print(sVal[1][3]); Serial.println(" "); #endif //set old val to current val if its the first run. if (firstRun) { sVal[0][0] = sVal[1][0]; sVal[0][1] = sVal[1][1]; sVal[0][2] = sVal[1][2]; sVal[0][3] = sVal[1][3]; firstRun = false; } //calc new smoothed value. sVal[1][0] = weight * sVal[1][0] + (1 - weight) * sVal[0][0]; sVal[1][1] = weight * sVal[1][1] + (1 - weight) * sVal[0][1]; sVal[1][2] = weight * sVal[1][2] + (1 - weight) * sVal[0][2]; sVal[1][3] = weight * sVal[1][3] + (1 - weight) * sVal[0][3]; //calculate average of the four sensors avg = (sVal[1][0] + sVal[1][1] + sVal[1][2] + sVal[1][3] ) / 4; #ifndef PAVG //send the percent difference of each sensor from the average. Serial.print(((float)(sVal[1][0] - avg) / avg) * 100.0); Serial.print(" "); Serial.print(((float)(sVal[1][1] - avg) / avg) * 100.0); Serial.print(" "); Serial.print(((float)(sVal[1][2] - avg) / avg) * 100.0); Serial.print(" "); Serial.print(((float)(sVal[1][3] - avg) / avg) * 100.0); Serial.println(" "); #endif //old = current new value sVal[0][0] = sVal[1][0]; sVal[0][1] = sVal[1][1]; sVal[0][2] = sVal[1][2]; sVal[0][3] = sVal[1][3]; //reset the counters and values count = 0; sVal[1][0] = 0; sVal[1][1] = 0; sVal[1][2] = 0; sVal[1][3] = 0; } }