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using DR-40 coupler for S90 with battery door open?

Started 11 months ago | Discussions thread
reyalp Regular Member • Posts: 201
Re: using DR-40 coupler for S90 with battery door open?
2

joniverson wrote:

Ok, so I tracked down the CHDK program and installed the files. It took a little detective work, but I now have RAW files in auto mode which is very good. One thing I'm going to try and do though it have it set to boot up when the camera does. Right now, I have to manually load it each time. I just wanted to test though before going further with the program. Thanks for the suggestion!

To have CHDK start automatically, you need to make the card bootable, see https://chdk.fandom.com/wiki/Prepare_your_SD_card

Briefly: Canon uses special, canon-specific "BOOTDISK" string to identify bootable cards, (not the normal bootflag the OSes use). This can be set within CHDK using the "make card bootable" menu item, EXCEPT...

for cameras like S90 which were released before 2011, the camera can only boot from FAT16 (or FAT12) partitions. Since FAT16 only supports up to 4GB, you must create a multi-partition card if you want to use more space. The simplest way to do this is using one of the setup programs "Stick" or "Chimp" linked from the wiki page above, although you can do it with gparted or similar.

FWIW CHDK also allows you to control the camera from a PC and "remote shoot" where the files are saved directly to the PC. Depending what you are doing, this may be a useful alternative to keep the door open and swapping the card. See https://chdk.fandom.com/wiki/PTP_Extension

Thanks for the info. Yes, a paper clip did the trick. There was a little small switch that, once depressed, the camera would come on. However, it's not really worth using the DC adapter. I can't get the lens to retract nor take any RAW images. I'm almost certain it's because of poor current from the power supply because using internal batteries, I don't have these issues. I was worried about battery life but after using the camera, I don't think I'm going to have to be concerned.

That's odd. FWIW, I have 3 cheap amazon knockoff power supplies I've used with a several different powershot models and haven't seen anything like that.

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