/diy/ - Do It Yourself

I have 3 separate heating pads connected to a 5v 1A psu which is good enough for my heating needs. I want to make sure that they draw more or less the same amount, I was considering feeding each pad with a 1n5157 diode. But should I use a mosfet instead (like a 2n7000)

I have some dc motors that can run anywhere from 5-12v (increasing voltage increases rpms).
Should I control the rpm's via voltage or PWM?

I need to create air circulation in my home using multiple small fans. I have a bunch of the same 12v dc motors used for small vacuum cleaners. I think I can get them to use around 5w per fan for my needs which is great. My problem is where can I get fan blades that are the right fit for the pole and how can I attach them? Also, if I bore a hole into a stud, mounted the dc motor in that hole and ran the fans, would that be a hazard to the motor or otherwise?

>>2023425
People don’t put conditions on a house purchase for something they plan on chucking anon. Quite honestly it will probably be repurposed as a liquor cabinet or kids toy storage, I would love to have something like that in my dining room. Don’t let it eat at you, tell your sister to contact the realtor and tell them you’ll come pick it up if they do ever decide to toss it. On the other side of that same coin maybe your sister wouldn’t be able to sell without your contribution. She isn’t giving away your work, your work is aiding in her life’s story, it will be infamous now, the house sold because of your piece, take pride in that. You can also build something new for her and continue your legacy of building nice stuff for your loved ones.