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how about this: http://rz-robotics.de/z-usb.html http://www.vinculum.com/prd_vdip1.html This looks fine! One of those specialised usb-host chips is described extensively here http://www.ixbat.de//files/admin/projekte/usbport/sauter_thesis.pdf I thing such an USB bracketer is not an impossible proje...
by doc-diy
Mon Mar 09, 2009 1:53 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [Papywizard v2] Tethered shooting and intelligent bracketing
Replies: 244
Views: 89848

IMHO the only clean solution is to implement a USB-host in a small embedded system voila, here it is: http://hackaday.com/2009/01/17/cuiduino-arduino-with-true-usb-support/ I guess the USB has no USB-host functionality. In the USB-tree you need one host to control the communication. Usually it's th...
by doc-diy
Mon Mar 09, 2009 11:57 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [Papywizard v2] Tethered shooting and intelligent bracketing
Replies: 244
Views: 89848

Hi, Did you ever find out more about this: http://www.autopano.net/forum/t5344-hdr-jack-the-ultra-compact-interval-and-hdr-trigger Should be little difficulty triggering it from the camera port on Merlin via Papywizard. In fact, I guess that using the Merlin contact rather than the push button shoul...
by doc-diy
Mon Mar 09, 2009 11:19 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [Papywizard v2] Tethered shooting and intelligent bracketing
Replies: 244
Views: 89848

I think it's a hardware problem to measure the correct bulb exposure time. As Frederic mentioned the firmware updates are mostly useless. Nikon has implemented the bulb time measurement correctly (D80) but the shortest time is 1/10s. I prefer Canon's way. You can fix the EXIF data using a tool calle...
by doc-diy
Wed Feb 11, 2009 4:24 pm
 
Forum: Hardware (OLD)
Topic: HDR-Jack - The ultra-compact interval and HDR trigger
Replies: 18
Views: 9856

The minimum exposure time saved in EXIF is 1 s for the bulb mode. This is a Canon problem. To find out the real exposure time I compared the exposure (looking at the histogram) of the bulb shot with ordinary shots with a well-defined time like 1/125, 1/180 or 1/250. Of course you have to keep the co...
by doc-diy
Tue Feb 10, 2009 8:03 pm
 
Forum: Hardware (OLD)
Topic: HDR-Jack - The ultra-compact interval and HDR trigger
Replies: 18
Views: 9856

I confirm that it works fine; I'm able to shoot more than 40 s in Bulb mode on my 20D, only closing the shutter contact (which also activates the focus sequence, before the shutter). Thank you for testing, I will add this information about the 20D to my website. The trigger should work with the 20D...
by doc-diy
Tue Feb 10, 2009 10:34 am
 
Forum: Hardware (OLD)
Topic: HDR-Jack - The ultra-compact interval and HDR trigger
Replies: 18
Views: 9856

About focus and shutter contact, it is not true. At least on my 20D: but closing the shutter contact also activates the focus sequence (thanks Canon!). That's interesting. I tested the HDR-Jack on a 40D and the outcome was that you need to pull down both contacts for bulb bracketting. It was possib...
by doc-diy
Mon Feb 09, 2009 8:56 pm
 
Forum: Hardware (OLD)
Topic: HDR-Jack - The ultra-compact interval and HDR trigger
Replies: 18
Views: 9856

HDR-Jack - The ultra-compact interval and HDR trigger

Hi folks, Recently I've build a very small and helpful gadget which which might be interesting for those of you doing HDR photography or HDR-panorama photography. It's an extremely compact microcontroller based circuit which allows to photograph very long bracketting series by just pushing a button....
by doc-diy
Mon Feb 09, 2009 5:19 pm
 
Forum: Hardware (OLD)
Topic: HDR-Jack - The ultra-compact interval and HDR trigger
Replies: 18
Views: 9856

Hello, I really like the idea of the web kit and I'm proud to have some pics in the book. Could you also provide a small or vertically aligned image, please? I'd like to advertise for the panobook on my web site. The problem is that I've got less then 200px vertical space below the navigation menu. ...
by doc-diy
Mon Feb 09, 2009 4:40 pm
 
Forum: Announcements / Annonces
Topic: Panobook 2009 web kit available! | Kit web Panobook 2009 disponible !
Replies: 4
Views: 3423

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