I really appreciate your suggestions and have downloaded and perused your latest and greatest Ultimate_4-8 script and it looks very promising,
I see in your Ultimage Intervalometer options there is both a Shoot on USB Pulse option AND a Pause when USB connected toggle. So I'm guessing and hoping that the camera can tell the difference due to the action on the two different sets of USB pins. As I understand it it's the power pins that are used for the Remote shutter and the two inner data pins for CHDKPTP. Am I right?
The missing item in question is the initiation of a Camera Shutdown, to save power between shots ie.A super low powered microcontroller (Arduino or similar) with a programmable timer, switches a relay to supply power to the camera which turns it on (because the physical button is constantly depressed)The Arduino then initiates one or more image captures over USB RemoteThe resulting image/s are saved locally onto the camera SD cardThe camera powers down until the next Arduino initiated scheduleThis continues until a second schedule initiates a relay to wake up of the linux box for file handling and network tasks such as moving images from the SD card to the Raspberry Pi storage and subsequent resizing and uploading of thumbnails images
Do you think it might be possible (for a novice like myself) to copy the camera shutdown segment of another script, like the KAP UAV script which features a setting to shut down once a user set number of images have been taken?
I suspect this would be easier to implement than a USB Remote function initiated by a set of pulses.
If I understand what you are doing correctly, you just need a simple script that automatically runs each time the camera starts, takes one photo, and then shuts the camera off? Unless some special condition tells it to wait for PTP transfers of images, followed by a power off sequence.
a new script to do what you really want would be easy to code and thus probably more reliable. If you can program Arduino's and Pi's, I could pretty easily give you a functional starter script that you could tune to your hearts content or tweak and ask for help if it stops working.
I would probably suggest implementing this with a variable pulse width signal from the Arduino. One pulse length for "shoot", a different one for "shutdown", and a third for "switch to USB transfer mode".
That would be awesome
I think I can handle the Microcontroller programming ok but can you clarify whether the USB transfer mode you're talking about is the same thing as the CHDKPTP connection that I'm used to using with my Raspberry Pi, or something else?
I am planning on airtight enclosures, with enough gel for the captive moisture initially enclosed but I will look into Argon as an alternative If you can share any insights into how it is done, where to purchase those valves etc. I would appreciate it. I assume one can buy small canisters of Argon, or do you happen to work in an industry where it's readily accessible?I'm counting on the power draw of the Peltier compensated by the power of the Sun that is heating the system. Perhaps I'm dreaming of an impossible perpetual cooling rig here!?Thanks for your inputCheers
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General Help and Assistance on using CHDK stable releases