21. Power management

GPS consumes way more power than Timer and Blinker 

  • Fully charged 240 mAh battery is good for about:
    • 80 three-minute flights with only timer
    • 20 flights with blinker enabled
    • 3-6 flights with blinker enabled and GPS
  • Battery has a dedicated protection circuit. It cuts off the battery when the voltage goes below 3 volts. The Battery is safe for more than 1 year in protected mode. Timer does not operate if the battery is in protected mode. However as soon as you connect the cable, charging begins
  • Timer shuts off automatically after some time of inactivity
  • Waiting for launch mode - Timer shuts down in 30 minutes
  • Timer shuts down if you do not start entering new time or Servo position value for 10 seconds
  • Timer will stay in Ringing-Blinking stand-by mode till the battery is discharged and goes to protected mode. Fully charged battery will last for few weeks. However, with GPS it is only few hours.
  • In all other cases Timer shuts down after 1 minute of inactivity
  • Charge the battery if you did not use a Timer for a few weeks. Timer draws a small current (about 0.00015A) even if it is shut off. This discharges the battery to 3 volts in 8-10 weeks and the battery protection circuit will go to protected mode. It is safe for the battery
  • Timer uses 25 mA when the servo is not moving and no sound
  • Timer uses 40 mA when the servo is moving and no sound
  • Timer uses 90 mA when Buzzer sounds and the servo is not moving
  • Timer uses average 0.25 mA in Ringing-Blinking stand-by mode


  • Friday, 23 September 2011

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