Chaining regular extension cords isn't a problem by itself, connecting too many things in parallel and exceeding the rated max is a problem (and chaining extension cords "just" increase the risk that ordinary people will decide to connect more than they should, especially because the lowest rated cable in the chain sets the total limit)
Solar panels don't generate constant power! That's why it's wrong because you'll get wrong numbers. You can't assume you'll get peak output continously.
You *** must *** calculate incoming and absorbed light. The Watt output will vary continously as the sun moves and weather changes. If you have average kWh / day stats and a battery solution that can store a day of battery, THEN you can calculate average Watts if weather doesn't change too much.
Yeah, solar panels put out power in proportion to the light that hits it and its efficiency. The latter is in the specs but the former requires knowing how it will be installed before you can determine expected output.
Some calculators can also consider weather predictions (cloudy days, etc)
They'll usually let you bring you own hardware. As long as you buy one that is not carrier locked it will work (if you're buying it in a store, ask the staff to be sure it's unlocked)
If your old SIM card doesn't fit you might have to ask your carrier to send a new one, or you can ask for eSIM setup (log into your carrier account, scan a Qr code)
To be fair cryptography can make a lot of that kind of private data inaccessible
But still, this particular project is stupid and being able to use just biometrics for access is idiotic. Generating secret keys from data that is fully exposed to the public is extremely moronic.
Biometric scanners only protect against lazy attackers, unless you literally have an armed guard next to the scanner to enforce correct scans without shenanigans
This requires the crime to both be federally prohibited and under federal jurisdiction. Stuff like murder doesn't typically fall under federal jurisdiction unless borders are crossed or federal property is involved or something like that.
Synchronized reading is hard when the pixel count is high. At some point it's hard enough to pull all the data through the controller at once quickly so you need either multiple circuits, or one circuit that reads a section of pixels at once (row by row = rolling shutter effect).
Some of this is processing limits in the internal controller in the sensor, but it's also timing and signal routing and synchronized readout for a massive amount of pixel sensors. It's literally tens of millions of triplets of RGB detectors which has to be read simultaneously 60 times per second, and basic color correction has to happen right in the controller, before the main CPU / GPU gets the image stream.
At some point you even get cooling issues, and need a cooling system behind the sensor.
Chaining regular extension cords isn't a problem by itself, connecting too many things in parallel and exceeding the rated max is a problem (and chaining extension cords "just" increase the risk that ordinary people will decide to connect more than they should, especially because the lowest rated cable in the chain sets the total limit)