It really isn't hard, and for me it's quite meditative. Truing old wheels can be frustrating if the rim is in bad shape, but with new components it normally goes very smoothly.
Something I figured out way too late: get a good spoke key in the right size, not one of the universal ones. It makes truing so much more enjoyable if don't have to grab onto the extra slots in the spoke key all the time.
You could use a voltage divider followed by a unity-gain amplifier to lower the output impedance, about like this:
(I think that circuit could work, but I haven't thought about it a lot, so it might not)
Not really. With that bulb, all the light is focused forward, not to the side. The light will never hit the reflector, it is only focused by the lens in the LED housing, and that isn't enough.
From looking at the LED bulb, I can tell you that it will not work very well in that flashlight.
The reflector of the flashlight is built so light coming from a very small source (like the filament of an incandescent bulb) is directed forward in a focused beam. With the led bulb, light is coming from 10 different spots, none of them being in the focus point of the reflector. The result will be a spread out beam that won't be bright over longer distances.
The only type of LED bulb that could work is something like this car replacement bulb that keeps the light source to a relatively small spot. But I don't think those are available in the size you need.
One of my monitors has had a couple of dead pixels for a couple of years. I still find myself wondering sometimes if that dark spot is part of the image or just my crappy screen.
Incandescent oven bulbs will probably not be replaced, simply because there is no reason for it. The "wasted" energy from an incandescent bulb is expelled as heat, and extra heat in an oven is not a problem. You can describe the bulb in an oven as a tiny heater that just happens to give off a bit of light.
These brakes are single-pivot side-pull caliper brakes. They can work well, but only if they are well made - I personally never had much luck with Weinmann brakes.
For the rear brake, pretty much the only thing you can try is replacing the brake pads. The front ones don't look very worn, but the rubber gets hard with age and loses its effectiveness.
The front brake looks broken beyond repair. The part I circeled red should be attached to the green part, but the connecting part seems to have broken off.
You might be able to find a replacement, but I would recommend replacing the whole brake for a better one.
As a young child, I had a wooden board with a bunch of different light switches mounted to it. Nothing to tinker with, but I had a lot of fun with the physical sensation of switching them on and off. I think that's all you can really ask for at that age.
Later on, I enjoyed taking the switches apart, figuring out how they work and using them in my electronics projects.
My point is, whatever you choose should be physically fun, even without understanding it. A few switches and maybe a blinking light can entertain a toddler for a long time. The tinkering can come later.
I have the exact same setup and also didn't get the warning yet. Maybe pihole stops the AdBlock detection?