 			digitalWrite(DIVIDER_GND, LOW);
 			thermistor.wake();
 			thermistor.enable();
-		} else if (now - last > DEBOUNCE) {
+		} else if (now - last > DEBOUNCE_MS) {
 			last = now;
 			if (units == cent)
 				units = fahr;

Analog thermistor(THERMISTOR, vcc);
PinChangeGroup pins(PB);
PinChange button(SWITCH, pins);
Timer1 timer(TIMER, DIGIT);
Devices devices;

const uint8_t A = _BV(0);


typedef enum { cent, fahr, abso } units_t;

#define IDLE_MS		10000L
#define DIGIT_MS	500L
#define DEBOUNCE_MS	500L

#define THERMISTOR	7
#define SWITCH		1
