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So, /diy/, i'm planning to build my own personnal satellite. Even if it sound weird or stupid, i found many informations about how possible it is, and it's not as unreachable as it looks like.
See, this book, from www.opensat.cc seems to be the best how-to imho
The guy is using an arduino, and modify some components to make it space-able.
I do think using a raspberryPi is way better, because has more potential, and the Astro-Pi project does exists.
But using the HAT from Astro-Pi seems to be an extension of sensors for raspberryPi. Is the raspberryPi feeling great in space by default ? Is it necessary to modify it ?
What are the things i should think about when preparing the satellite building ? And what do you think of the manual from opensat ?
Any thought is welcome here.
Also, pic related, this is a satellite from CubeSat project.
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This is pretty close to the sink setup I have. I think this is a Moen and mine's a Delta.
The whole handle assembly turns because the nut (the red arrow in the picture) is loose. So I climbed under there, and found that there's only about 6 inches of space between the sink and the wall, so it's nearly impossible to get a crescent wrench on the stupid nut. And even if you do, you can only turn it about 10 degrees before the handle of the wrench hits the wall or the sink.
So I got one of those big plumber socket things that kind of slides over the whole assembly and now I can at least turn the nut.
HOWEVER, when I turn the nut, the whole handle assembly just turns with it. So how do you turn ONLY the nut and not everything else? There is nothing coming out of the bottom that I could hold with a wrench except for the inlet piece of copper pipe and it's pretty easy to bend, so I can't really put any pressure on it.
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Found 2 of these babies for free, along with a golf caddy. The caddy is missing pieces, will steal the motor.
I'm just wondering, how can I recharge these batteries? A charger will run me $50+. Can I charge them from my car via jump-starting? I want to sell them, need to know if they'll charge first. One has power (works in the caddy), the other one doesn't.
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I need to replace a 50+ year old selenium rectifier with diodes, but I read somewhere that you cant just replace it and go from there,cause then it can over-volt the circuits or something ...
You would need to put a resistor in series with the diode, can somebody help, also have the diagram for the rectifier ...
Its a old antique vacuum tube TV and I think just putting a little tiny diode in place of the big steel rectifier would just destroy it, cause of the big current
How would I test the selenium rectifier, maybe it could still be good, I need to test it out of the circuit ??