adding setHeater and test ok

my-tclab-firmware/my-tclab-firmware.ino

@@ -13,7 +13,7 @@ int T1Val;
 int T2Val;
 const int nAvg = 10; // samples per reading
 const long BAUD = 115200; // Freq serial comm
-const float factor = 3.3/1024*100; // 3.3V/1024
+const float factor = 3.3/1024*100; // 3.3V/1024*100
 
 // functions
 
@@ -25,11 +25,23 @@ float readDeg(int channel) {
   return acc/nAvg;
 }
 
+void setHeater(int pin, float value) {
+  // clamp the input value
+  if(value<0) value = 0;
+  if(value>100) value = 100;
+  //convert to pwm 0 - 255
+  int pwm = (int)(value*255.0/100.0+0.5);
+  analogWrite(pin, pwm);
+  analogWrite(LED, pwm);
+}
 
 
 void setup() {
   // put your setup code here, to run once:
+  pinMode(Q1, OUTPUT);
+  pinMode(Q2, OUTPUT);
   pinMode(LED, OUTPUT);
+  setHeater(Q1,40);
   analogReference(EXTERNAL);
   Serial.begin(BAUD);
   delay(100);