I know answer for several questions:
- Ballmount sphere diameter? If it is 17mm, it should be the standard Garmin nüvi sphere mount, with a bunch of different accessories available. Maybe a nüvi owner can verify this?
STANDART GARMIN 17mm FOR GDR 35 AND GBC 30 CAMERAS.
- Can the camera be USB-mounted to a PC? If yes, what gets mounted? Only the SD memory, or a second device as well (the camera itself)?
NO, ONLY RUSSIAN/UKRAINIAN VARIANT CAN DO IT. AS SD MEMORY. STOCK FIRMWARE 3.00 CANNOT DO IT. IT IS PROMISED TO BE INTRODUCED IN 3.20 VERSION.
- Can the video footage be watched with any player, or only with the Garmin PC software? Which video filename/format is used?
ANY PLAYER. AVI FORMAT, H.264 CODEC. BEST CHOISE IS VLC PLAYER.
- Are the GPS logs accessible as separate files, or "hidden" within the video footage? If accessible, which filename/format?
LOGS ARE INSIDE AVI FILE. FORMAT IS CLOSED, BUT JAPANESE FRIENDS DECOMPILED AND PROVIDED FULL FORMAT SPECIFICATION. YOU CAN DEVELOP YOUR OWN CONVERTER.
kohada.2ch.net/test/read.cgi/car/1361680166/
- Could someone please post the directory/file structure of the SD card? (I would like to understand if the GDR35 has any similarities with nüvi units, which I am proficient with to a certain degree. I doubt that Garmin would rewrite all software functions from scratch...)
NO SIMILARITY. CAMERA IS MADE FROM SCRATCH.
ROOT FOLDER IS GARMIN\VIDEO AND GARMIN\SNAPSHOT
- Any *.GPX or *.GPI files visible? These could be the POI database for traffic cams, and if yes, using other POI/traffic cam databases might be possible.
NO. PROPRIETARY FORMAT IS USED. IT IS A TEXT, WITH CRC CHECKSUM AT THE END.
- Can the screen be switched off, or does it have an auto-off mode?
YES, AUTO-OFF MODE IS PRESENT.
- Can the microfone be permanently muted?
YES.
- Can the screen be switched to rear camera only?
YES.
Does it remain in that state after reboot?
NO. PROBABLY THIS IS AN ISSUE OF THE INITIAL VERSION.
- Does the camera have an emergency button (write protection)?
YES.
- Does the camera clock synchronise automatically by GPS? In the menu screenshots above I see that at least the timezone has to be set manually.
YES. YOU HAVE TO SET TIMEZONE ONLY.
WITHOUT SAT FIX VIDEO HAS DASHES ON TIMESTAMP AND OLD TIMES LIKE 1980/1/1 FOR FILES.
- Any experience with radio interference?
NO INFORMATION REGARDING THIS.
- Any general problems yet? Recording failing, looping not working, temperature problems etc.?
NO INFORMATION REGARDING THIS.