A800 Porting Thread - page 24 - DryOS Development - CHDK Forum supplierdeeply

A800 Porting Thread

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Re: A800 Porting Thread
« Reply #230 on: 13 / May / 2012, 13:32:31 »
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And are you able to make photo of something dropped in front of camera? I tried ciggarete pack (on the shortest focal lenght, about 50cm from lens) and camera did not "catch it".

Re: A800 Porting Thread
« Reply #231 on: 13 / May / 2012, 13:40:00 »
And are you able to make photo of something dropped in front of camera? I tried ciggarete pack (on the shortest focal lenght, about 50cm from lens) and camera did not "catch it".
Depending on the script you are using,  you will probably have to play with the sensitivity settings.

http://chdk.wikia.com/wiki/Motion_Detection
Ported :   A1200    SD940   G10    Powershot N    G16

Re: A800 Porting Thread
« Reply #232 on: 14 / May / 2012, 08:17:05 »
Hey all - sorry for the delay, I've been slammed with real life then on vacation.  Glad that the motion detection script stuff seems to have worked itself out :)  Anything you all want me to test right now?

Re: A800 Porting Thread
« Reply #233 on: 14 / May / 2012, 09:53:38 »
Ported :   A1200    SD940   G10    Powershot N    G16


Re: A800 Porting Thread
« Reply #234 on: 15 / May / 2012, 00:52:38 »
And are you able to make photo of something dropped in front of camera? I tried ciggarete pack (on the shortest focal lenght, about 50cm from lens) and camera did not "catch it".

I was able to photograph items dropped 1-3 ft (~30-100 cm) in front of the camera using  the fast option of Fudgey's motion detector script MDFB-080914.  My settings were: cols 10, rows 6, threshold 7, compare interval 10, pixel step 7, shoot 0 (fast).  Unless the illumination is bright enough to use a fast shutter speed, the objects will be blurred.  If the light is low enough, the object can be too blurred to see. 


Re: A800 Porting Thread
« Reply #235 on: 19 / May / 2012, 00:54:53 »
Hi,
  I have been using a800 1.0c in a book/photo scanning. Recently I have observed a problem that may be connected to what I have read in the forum. I have used the USB shooting feature for book scanning with success. However when scanning photos I have begun to use ptpcamgui and noticed some hanging situations. I have isolated the problem:
  As I am using an external power supply I measured current demand:
   After turning on                  110 ma
   Lens open                     280 ma (after overshoot)
   After commanding Zoom through Zoom+ and Zoom-       280 ma (after overshoot)
   After commanding Zoom clicking on the zoom pos ruler      820 ma
       Zoom+ and Zoom- become no operational (although I observed a script being executed). I have to go to view mode, back to photo shooting mode  press Zoom+ (and then current drops to 280 ma) and I may use Zoom+ and Zoom-.
  Using new charged batteries (2500mA), I notice a 0.1V voltage drop when doing above command on zoom pos ruler, returning to normal voltage levels after the same procedure as above.

Note: I was using trunk 1794. I have compiled trunk 1862 and repeated tests with the same results.
 
 

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Offline reyalp

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Re: A800 Porting Thread
« Reply #236 on: 19 / May / 2012, 16:31:03 »
Mlands: Maybe you can explain what you think the significance of these measurements is, and how you think it is related to CHDK and the camera hanging...

It sounds like you are saying that using the slider in ptpcamgui (which probably uses set_zoom rather than clicking the zoom buttons ?) draws more current and has some other side effect ?

Since you are using a camera with only a few zoom steps, clicking the zoom buttons should be a viable alternative.
« Last Edit: 19 / May / 2012, 18:00:47 by reyalp »
Don't forget what the H stands for.

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Offline msl

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Re: A800 Porting Thread
« Reply #237 on: 19 / May / 2012, 17:03:46 »
It sounds like you are saying that using the slider in ptpcamgui (which probably uses set_zoom_pos rather than clicking the zoom buttons ?)

Btw, the ptpCamGui zoom slider uses set_zoom() and the ptpCamGui buttons zoom+/zoom- use click("zoom_in/out"). Each zoom action is checked with get_zoom() and set the slider to the right position.

msl
CHDK-DE:  CHDK-DE links


Re: A800 Porting Thread
« Reply #238 on: 20 / May / 2012, 00:25:42 »
Mlands: Maybe you can explain what you think the significance of these measurements is, and how you think it is related to CHDK and the camera hanging...


It is a situation well localized and easily reproducible. The zoom can be set through 2 different ways. Perhaps it is (mis)guided  by some incorrect parameter table; or a peculiar functioning of this camera model; Of course, maybe it is just a dummy bug with no particular importance. The problem itself is of no importance and stepping the zoom it is what I am just doing with no impact.
  Anyway, there is no motor running and power consumption is greatly increased (the stead state current almost tripled). Some internal component may get very hot (~ 1.25 Watt additional dissipation); if this happens, on other usage, the battery may not provide enough current or a component may be stressed and the camera hangs. Something that may be worth checking.

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Offline srsa_4c

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Re: A800 Porting Thread
« Reply #239 on: 20 / May / 2012, 16:36:21 »
It is a situation well localized and easily reproducible. The zoom can be set through 2 different ways. Perhaps it is (mis)guided  by some incorrect parameter table; or a peculiar functioning of this camera model; Of course, maybe it is just a dummy bug with no particular importance. The problem itself is of no importance and stepping the zoom it is what I am just doing with no impact.
  Anyway, there is no motor running and power consumption is greatly increased (the stead state current almost tripled). Some internal component may get very hot (~ 1.25 Watt additional dissipation); if this happens, on other usage, the battery may not provide enough current or a component may be stressed and the camera hangs. Something that may be worth checking.
Do you experience the same when using a script from this thread? I mean manually, not via USB.

 

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