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Old 25-01-2017, 06:17 PM
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wasyoungonce (Brendan)
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wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Hi Pat I'm pretty sure you're correct...but in the mean time...fiddling around DD8....with caps...all of sudden it won't connect to camview...the 3.3V reg is getting hotter and I draw is now higher 238mA.

Which is not a lot but the regulator is sure heating up more.

I did some more "dark tests" and the camera was performing ok a little high on std deviation but could be sensor heat.

So I need to go back to find the failure!

Brendan

edit edit:
Hey the previous I draw measurements were wrong ...the following is correct:

...Anyway looking at the I draw I said I have 230mA. Other users mention ~220mA so this is not "out of this world". My previous I draw tests were incorrect as I was measuring total I draw not just 3.3V I draw.

I cut the gnd of DD12 (3.3V reg) and put an ammeter in series. It draws 107mA. @10V in (actually 107mA 8V ~12V in). That's a 6.7V drop across the regulator and this at .1A is ~ 0.67Watts VDrop across the regulator! Its a little too much too much its rating is ~100mA and we are there now.


Brendan

Last edited by wasyoungonce; 25-01-2017 at 08:08 PM.
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