diff --git a/barista/barista.ino b/barista/barista.ino
index 1d0c416..fa4bd14 100644
--- a/barista/barista.ino
+++ b/barista/barista.ino
@@ -10,8 +10,8 @@ enum logic {
 };
 
 #define DEBOUNCE_TIME 20L /* ms */
-#define TEMP_MIN 80.0f
-#define TEMP_MAX 90.0f
+#define TEMP_MIN 40.0f /* C */
+#define TEMP_MAX 50.0f /* C */
 
 #define LED_MIN_VALUE 0
 
@@ -59,6 +59,7 @@ struct btn {
 };
 
 struct input {
+	unsigned long t_ms;
 	int ntc_V;
 	enum logic btn[MAX_BTN];
 } g_in;
@@ -108,6 +109,8 @@ void setled(int pin, enum logic st)
 
 void do_input(struct input *input)
 {
+	input->t_ms = millis();
+
 	/* Read buttons */
 	for (int i = 0; i < MAX_BTN; i++)
 		input->btn[i] = read_input(button_pin[i]);
@@ -169,7 +172,7 @@ int red_min = 50;
 int red_state = red_min;
 unsigned long brewing_time     = 3000UL; /* 3 seconds */
 unsigned long cooling_time     = 3000UL; /* 3 seconds */
-unsigned long max_heating_time = 10000UL; /* 10 seconds */
+unsigned long max_heating_time = 60000UL; /* 60 seconds */
 unsigned long max_idle_time    = 10000UL; /* 10 seconds */
 
 void proc_machine(struct state *st)
@@ -178,7 +181,9 @@ void proc_machine(struct state *st)
 	int on = (st->btn[BTN_ON].state == RELEASED);
 	int hot = (st->btn[BTN_HOT].state == PRESSED);
 
-	Serial.print("state=");
+	Serial.print("t=");
+	Serial.print(millis());
+	Serial.print(" state=");
 	Serial.print(st->mstate);
 	Serial.print(" on=");
 	Serial.print(on);