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I am planning to convert an old fridge into a fermentation chamber so that I can brew beer at home. Most people in the homebrewing community seem to use something called STC-1000, an inexpensive temperature control unit, which is basically just a temperature sensor hooked up with an MCU and two relays, that switch the fridge and an (optional) heat source
I have some experience with low-voltage circuits, but I have never really built anything that runs on the mains and I am not sure how reliable these cheap Chinese electronics are. Most people seem to do fine with just wiring up the control unit with the fridge, but they are mostly homebrewers with little to no knowledge of electronics. So I was thinking about some extra precautionary measures:
1. install a simple fuse so a current surge does not destroy the thermo control unit
2. use extra, higher-rated relays to switch the fridge on/off so that the relays in the STC-1000 only have to switch a few milliamps.
The built-in relays are rated for 10A, so I think they should be enough to switch a smallish refrigerator, even after accounting for the current surge upon powering up the compressor, but I really want to be on the safe side here.
What would you say, /diy?
tl;dr: I want to use an inexpensive temperature control unit to control a fridge and I don't want to burn my house down.
Rubberized Plastic Degrading, Got Any Tips?
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I have a two year old laptop that was made cheaply in Taiwan, and the rubberized plastic that coats most of the laptop's surfaces is starting to degrade and get really sticky. I've had this situation before with mice and a few other electronics, but this is the first time it's happened so quickly. My Logitech mice had no problems for at least 4 years, and I've still got a Zune HD with a similar rubberized plastic bottom that hasn't degraded at all, but has rubbed away.
Are there any ways to restore this coating to its prior state, or at least keep it from being sticky? I was thinking of trying to rub it in mineral oil since internet scuttlebutt says that peanut butter or Wolfgang's External Trim Sealant helps a bit.
Otherwise, I think I'll need to remove it with isopropyl alcohol, right?
How I almost died last year
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A /diy/ tale.
I'm a hobby woodworker, I make fancy boxes, canes, jewelry and the like. Almost always I wear a dust mask, the 3M kind with the two pink filters. It works great, it's comfortable, the only issue is that it gets humid inside the mask.
Well, last year during the summer in Florida, it was already very, very humid. Wearing the mask made it difficult to really get oxygen because of how damn hot and humid Florida is. So instead of taking a break, I continued to sand and work with black Walnut and other woods. JUST FOR AN HOUR OR SO.
I have a poor immune system, and I work in a nursing home. So after some moist exotic wood dust made its way into my lungs (oh it was there, I was coughing a good bit), I went to work and got exposed to MRSA (the shit's everywhere).
I started experiencing chest pain after a few days and I ignored it (I have chronic pain, I hurt all the time). It got worse. It got harder to breathe because of the chest pain.
I was a tough guy and I waited too long to go to the hospital. They said if I was there an hour later I'd have been dead. I ended up with a severe MRSA infection in my lungs. For the next few days my fiancé had to feed me and stay by my side because of the critical condition. Because of the poor oxygen supply to my brain, and the significant infection, I ended up with kidney failure, heart attack, hallucinations and other issues.
I was 23 years old.
I barely, barely made it back and I had just asked the most wonderful woman in the world, kind smart and cute and an old soul, to marry me. I almost died three times in that hospital. I cannot stress enough the importance of having family or friend with you in the hospital; healthcare workers are often incompetent or abusive. And most of all,
Please wear a dust mask.
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I just bought a 1969 CT90 that's been neglected for a few years, It's not too far from running but I want to do more with it than just that. I want restore it. Here's the problem though, I know virtually nothing about painting or metal finishing. It's rusted in a few spots and the chrome bits are a little rusted. I can clean the rust up but I'm not sure how to prepare a surface for painting or how to paint for that matter. The chrome really has me worried though, chroming kits online are really expensive and have some really nasty chemicals, so I've written off doing that myself, but I was wondering if there was something I could do to give the metal a nice chrome appearance. I could send the parts to an actual place that specializes in chroming parts but that doesn't seem very "do it yourself"