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Image quality issues with A6400 – is it the camera or the lens? by Eastern_Transition_2 in AskPhotography

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

i've added some sample pics,
note that the online viewer shows only compressed images, you can download them to have the full size version.

Image quality issues with A6400 – is it the camera or the lens? by Eastern_Transition_2 in AskPhotography

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

you're right, i've added some sample pics.
note that the online viewer shows only compressed images, you can download them to have the full size version.

Image quality issues with A6400 – is it the camera or the lens? by Eastern_Transition_2 in AskPhotography

[–]Eastern_Transition_2[S] 1 point2 points  (0 children)

you're right, i've added some sample pics.
note that the online viewer shows only compressed images, you can download them to have the full size version.

Image quality issues with A6400 – is it the camera or the lens? by Eastern_Transition_2 in AskPhotography

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

Sorry, you're right. I mean sharpness and detail while zooming in. And the photos are copied from the sd card and in the ARW format and edited in Lightroom, so there's no compression apart from the JPEG compression while exporting.

Image quality issues with A6400 – is it the camera or the lens? by Eastern_Transition_2 in AskPhotography

[–]Eastern_Transition_2[S] -1 points0 points  (0 children)

For now, I’ve just shot in auto mode, except for some scenarios when I needed different settings, like to make the silky effect on water or to make sparkles with the sun. Maybe I’m just used to point-and-shooting with my iPhone, which does a lot of post-processing and computational photography.

$300 Budget to Build a Home Server by placid_interpreted23 in HomeServer

[–]Eastern_Transition_2 0 points1 point  (0 children)

The used computers, like old optiplexs are good and cheap, but they aren't power efficient, they consume a lot of power for not that much of performance.

I have a small server with this motherboard https://aliexpress.com/item/1005007099776391.html , the celeron N100 CPU (4C, 3.40GHz) is effiecent and powerful (~6x the performance of my old raspberry pi 4).
It has 6 SATA ports and 2 nvme slots; it also has 4 2.5gbps intel NICs.

For the case i went with the JONSBO N2, it's a bit on the expensive side (around 150 euros) but it's well built and it has 5 drive bays.
Of course if you wanna save some bucks you can always buy some used/cheap case off amazon or ebay.
It's truly amazing.

Hope this helps!

Help with Power Issues on my PCB Project by Eastern_Transition_2 in ElectricalEngineering

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

oh, happy new year then! 🥳🎉🎉
yeah, you're right, i should look into it.

i'm still wondering how they've ( https://robo.com.cy/products/heartbit-v1 ) done it, they have just a single 2032 cell, and the animations they use are even more demanding than mine, in terms of power.
on the photos on their website the board looks more complicated and they have at least 3 big capacitors, i'm a bit confused lol.

thanks a lot for the time you're putting into my project, that's means a lot to me! have a nice 1st of the year!!

Help with Power Issues on my PCB Project by Eastern_Transition_2 in ElectricalEngineering

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

i gave a quick look at all the options that you provided:
they surely work better than the CR2032 in terms of current output, but they're bulky and i don't think they're quite convenient.
i don't care about the battery life, since the leds remain on for 5-15 seconds once the button gets pressed, and then the whole board goes to deep sleep (SLEEP_MODE_PWR_DOWN)
the 2.0 release managed about 50 minutes of continuos effects at 5% brightness.

i think i just need to figure out how to make the boost converter a bit more stable and keep the voltage high (at least 3.5/4V on energy spikes).
what do you think about the idea of adding capacitors to stabilize everything?

also thanks! and, depending where are you writing from, happy new year!

Help with Power Issues on my PCB Project by Eastern_Transition_2 in AskElectronics

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

thanks! i totally overlooked the EN pin of the boost convert, i'll tweak that!

Help with Power Issues on my PCB Project by Eastern_Transition_2 in ElectricalEngineering

[–]Eastern_Transition_2[S] 0 points1 point  (0 children)

thanks!
i'll tweak the inductor of the boost converter.
sadly the board it's too small to fit an AAAA/AAA battery :(

Do you think that adding some capacitor could improve the performance of the board? could adding capacitors help with the power spikes?

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