5/31/2023 0 Comments Connect camera sofortbild d3200![]() Olympus OM-D E-M5III was the first Olympus model with a large DSLR-like sensor to support charging through its USB port. That is quite handy, I could record 4k videos non-stop for >1.5hours with a cable to a power bank in my pocket. ![]() Sony A7RII (introduced in 2015) can be charged from a power bank or PC while shooting. There are cameras with power consumption comparable to that of DSLRs, which support USB charging. There are no first-principle prohibitions to make a DSLR chargeable through the USB port. The parts cost for something like this (past the battery) really are negligible. If you're uncomfortable with this sort of stuff, I'd aim to find a local electrical engineer. I'm not an electrical engineer (I'm just enthusiastic and well-caffeinated) so it might be ill-advised to stick something like that into your camera without additional smoothing and/or additional voltage regulation. The problem now becomes keeping your camera protected. The great thing about picking a 12V lead-acid supply setup is it's used everywhere and rural demands mean there are solutions for keeping batteries trickle-charged via solar (or mini wind/water turbines, etc). Add a 5V supply power supply and you can power the Raspi too. Assuming you have good standby power usage, an external timer would be a better idea than leaving it on USB indefinitely.Ī separate power supply is by far the better option but if you're out of range of an AC supply, a car battery can easily supply currents like 2.5A through a cheap step-down transformer. What's killing it for you is being hooked into a USB interface. Perhaps more with higher density batteries. If you can do the timing internally (many DSLRs can) is a battery grip available? I'm not sure how many shots you're planning but in my experience the timer doesn't use that much power. It might be an option for a lower-power camera especially if you can disable the screen, etc. So short of chaining together multiple supplies, this probably isn't going to be an option for a full-on DSLR. I'm certain you'd start to get supply issues at the USB end too past a point. The problem is most of these ( one example) are limited in terms of current output to around ~5W. This is significant because you can buy USB step-up converters to get to 9V. ![]() My Nikon D750 has 7-9V 2.5A stamped on the bottom of it. Being able to do this over USB is unlikely but not impossible.
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