Use order 1 regression to prevent overfitting

Changes

1 changed files (+5/-5)

• Detector-Building.ino
  • @@ -28,10 +28,9 @@
    // Voltage to resistance conversion double v2r(double V_out) { return R_k * (V_in / V_out - 1); } - double vol[100]; - int con[100]; + double vol[100], con[100]; - const int order = 2; + const int order = 1; double coeff[order + 1]; void setup() {
  • @@ -53,13 +52,14 @@ Serial.println(con[n]);
    ++n; } - fitCurve(order, n, vol, con, coeff); + fitCurve(order, n, vol, con, order + 1, coeff); + for (int i = 0; i <= order; ++i) Serial.println(coeff[i]); } void loop() { double v = a2d(analogRead(THERM)); double c = 0; - for (int i = order; i >= 0; --i) c = v*c + coeff[i]; + for (int i = 0; i <= order; --i) c = v*c + coeff[i]; Serial.print("Voltage: "); Serial.println(v);