   oled.drawString("then press WAKE", 0, LINE_HEIGHT, FONT_SIZE, COLOR_RED);
   while(digitalRead(10) == HIGH);;
 
-  now = 0;
-  checkpoint = millis();
-
   power_twi_disable();
   power_usart1_disable();
   power_usb_disable();

  }

  uint16_t t = millis();
  now += millis() - checkpoint + 200;
  checkpoint = t;
}

  switch(nextscreen) {
    case SCREEN_STATUS:
      status_show();
      delay(3000);
      break;

    case SCREEN_WATCH:
