control SSR on pin 8

src/main.cpp

@@ -6,9 +6,15 @@
 #define Bknown 4267
 #define R0 100000
 #define T0 298.15
+#define SSR 8
 
 void setup() 
 {
+  // turn on SSR (and bed)
+  pinMode(SSR, OUTPUT);
+  digitalWrite(SSR, HIGH);
+
+  // set up serial port
   Serial.begin(9600);
 }
 
@@ -28,6 +34,10 @@ void loop()
   // write out message
   Serial.write(String(String(T-273.15)+","+String(Rknown)+","+String(Runknown)+"\r\n").c_str());
 
+  // turn off SSR (and bed) at limit
+  if (T>120)
+    digitalWrite(SSR, LOW);
+
   // wait a sec, then repeat
   unsigned long start=millis();
   while (millis()-start<1000);