fixed blink timer

src/main.cpp

@@ -4,7 +4,7 @@
 
 #define BLINKRATE 500
 
-long lastBlink = 0;
+unsigned long lastBlink = 0;
 
 void setup() {
     pinMode(LED, OUTPUT);
@@ -13,5 +13,6 @@ void setup() {
 void loop() {
     if ((millis() - lastBlink) > BLINKRATE) {
         digitalWrite(LED, !digitalRead(LED));
+        lastBlink= millis();
     }
 }