What did you do about this issue or did you have it with your Version 3 ?
Jan 19, 2018
#824
I've written about the problem in my car - if I leave it sitting for 4 or more days the front Mobius crashes when cranking the engine. This is related to the state of charge of the capacitor (I've ruled out vehicle battery charge by charging it fully before starting.) That one is hooked into the lighting circuit which shuts down ~ 12 minutes after locking the car. If driven within the rough four day period the Mobius auto starts fine. I've got a "delay off" timer I'm looking to install, but I want to first check what sort of standby current the circuit draws. (I don't want to introduce a new fault- the vehicle battery going flat from parasitic drain.)
The rear one is hooked into an "IGN ON" power source and doesn't have that problem (I've got a smart fob push button start ignition so the vehicle goes straight from off to engine running.)
I checked both of them this week and both had lost the date time around December 15th (last recorded file) and reset back to 1st January 2012. This wouldn't be a huge issue (for me), but if you lose the date time regularly it ends up overwriting those 1st Jan 2012 files- which you may have wanted to keep!
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Radius8
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Joined Nov 14, 2017 Messages 97 Likes 81 Location
USA Country United States Dash Cam Mobius (x3); SGGCX2
Jan 22, 2018
#825
Looks like you may be better off using some delay start circuit. Some folks over on the Street Guardian section of dashcamtalk were discussing this and they pointed out to some commercially available timers:
https://dashcamtalk.com/forum/threads/recommended-hard-wire-kit-with-timer-option.32653/
Or if you are somewhat handy with a soldering iron, you can build this "delay-ON" circuit for pretty cheap using widely available components (replace the LED with a transistor and relay + flyback protection diode):
http://www.learningaboutelectronics.com/Articles/555-timer-delay-before-turn-on-circuit.php
I have been using something like that, also DIY, in my daily driver for a few years and it work well enough. Of course, the better way to handle these startup issue would be to use a circuit that will only turn on once the system voltage is greater than some threshold like 13.3 V or what ever voltage your car puts out when the motor is running. I have an idea for such circuit but have not yet ordered parts.