ppetermann what are you talking about? HDR = High Dynamic Range - dynamic range is the ratio between the brightest and darkest part of an image, this has *nothing* to do with resolution or the refresh rate.

as for not being able to change the resolution: this projector is a 1080p full HD projector, thus you won't be able to switch to higher resolutions. It takes higher resolution input, but it will always reduce it down to 1080p because that's the max resolution it can project.

ppetermann recommended battery is probably something like 2s 450mah, the connector, judging from YT videos is xt30

ppetermann yes

ppetermann Depends on if you need a full uart for your rx, if you don't you can make it work. You'll have to power the vista from vbat though. Racerstar also makes an f7 variant of this aio, the f7 variant is much better suited to run a vista, as it has more uarts available and an 8v bec

ppetermann S (for example 2S) means its two "cells" in series P (for example 2P) means its two "cells" in parallel 2S2P would mean 2 times 2S in parallel

ppetermann Hey Josip, the short answer is "yes", however the question of yours makes me think that I should point out that parallel charging despite all fuses in this product remains a dangerous procedure that should only be done with full understanding on how it works, what this is, and what the risks are, as well as knowledge about the batteries, and their dangers as well. This product is a very well made set of cables and fuses - it looks smarter than that, but in essence it is that, so in essence you just asked if you can use cables and fuses with li-ion packs. I want to urge you to either spend more time learning about these things, or to abstain from parallel charging, so you don't burn down your home or worse. This gear is for people who really know what they are doing.

ppetermann it doesn't really depend on the drone on if the GPS will work or not. for this to work you will need: a free UART on your FC - the nazgul v2 comes, as far as i know, with an Succex-e f7 stack, which has at least 4 uarts exposed, as I don't see much periphery that would use one, I would assume that at least one, probably two of those are free. a place where to mount the GPS unit - the backside of this unit is a ceramic antenna, this antenna needs to be mounted on the drone in a way that during regular flight it points upward to the sky without any obstruction, ideally away from other antennas and motors. Keep in mind that your drone when moving is angled, so you want the GPS antenna mounted angled in the opposite direction to flatten out that angle. you then will need to setup your firmware (likely betaflight) to use the GPS, which is a bit of a process, try to find a bardwell video on it.

ppetermann This is an inboard rx, which depends on the firmware to implement the used protocol, you can select either variant (EU lbt, non EU) in betaflight configurator.