From 9c39dce0570d10eaa9fb026a621c8a663c511848 Mon Sep 17 00:00:00 2001
From: Anthony Wang
Date: Fri, 11 Feb 2022 20:21:05 -0600
Subject: Use order 1 regression to prevent overfitting

---
 Detector-Building.ino | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Detector-Building.ino b/Detector-Building.ino
index 498a114..b2c49d3 100644
--- a/Detector-Building.ino
+++ b/Detector-Building.ino
@@ -28,10 +28,9 @@ int d2a(double d) { return d * analog_max / V_in; }
 // 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 @@ void setup() {
     ++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);
-- 
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