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I am currently in my last year of high school and have a lot of work to do this first semester, and as a result of that and not much need for extra cash, I am without a job, though I will be getting one next semester. This means that I do not have enough cash to really choose a good, appropriate gift for my dad this Christmas; and besides, thoughtful handcrafted gifts are better. So, I have a plan for what to make, but I don't necessarily have the know-how to get it done, so I turn to you.
We live on a small lake with mountains on the far side, and my dad fucking LOVES the sunsets, which happen behind the mountains, so we see some cool sunsets. However, my dads office has no windows overlooking the lake, and there is no practical way to change that situation. So, what I want to do is take a big, ultrahigh-resolution/semipanoramic picture of the lake and mountains at sunset (I can use my father's nikon d70s, so if any of you know how to use that, tips would be appreciated), and then get the picture printed in large-poster format. I would then like to make it translucent in selected areas (sky/water sunburst), or possibly just replace those areas with frosted glass or something, and use RGB LEDs to put a soft light through the image that would correspond to the current time-of-day. That, plus some sort of light/gentle sound alert system to let him know when the sunset is beginning or alternatively at its peak.
I have rough electronics knowledge, eg given a schematic I can replicate it IRL. I am also a diligent worker, care about this a lot, and can earn enough through selling old shit of mine that I can provide for components and printing service. tl;dr inb4 'you won't/can't do it'.
Captcha: son, fFuppo
also, pic not related.
DIY portable water purification system
20 more posts in this thread. [Missing image file: Polluted water.jpg]
I've got a few weeks and nothing to do, so I'd like to start on a project. The thing I've decided on is a water purification system made out of things found around the house, at Lowe's, goodwill, etc.
- I want it to be completely non-electric
- I'd like it to be either compact or easy to assemble, to make carrying it camping more feasible
- I'd like to incorporate filtration and distillation processes
- It would be great if it could desalinate as well
- The cheaper the better, I'm willing to work with anything I can get my hands on
I thought of even trying to build a manual pump to use with it, so you could place a hose in the source and simply pump in the water.
Do you guys have any ideas about this?
43 more posts in this thread. [Missing image file: Cmoy_there.jpg]
Hey /diy/, I'm having an issue and request your existance.
I got babbys first CMoy together a few days ago, and I stuck a logarithmic pot in there so I could control the source's voltage.
Got it all together, plugged it into a source, and can get clear, good sound coming from a pair of my cheap test earbuds. However, when i turn the pot to try to reduce the volume, nothing happens when I turn it "up" or "down".
I checked there wasn't any solder bridges on my PCB, and cleaned the flux off the back with a toothbrush and some 99% isopropanol. I still get what seems to be full volume when I turn the amp on, and plug in a source.
Please help. If you need any more information I will provide gladly.
TL;DR: My volume control on my CMoy amp is fucked and there aren't any possible shorts and the voltages/voltage drops are all as they should be. Current draw is not excessive.