Your opinion on DIY PCB Making Hi, I am working on a school project and I would really appreciate some input. I have to ask questions on the process and common problems of making PCB boards for a presentation
1. What is the most time consuming part of making a PCB? Is there a part that significantly slows down the progress and why? 2. What part of the process (creating the schematic, etching, etc) is most prone to errors?
>>946991 You're just doing a presentation, no PCB of your own? Alright. Well, it depends entirely on the method. Now the two primary methods of DIY PCB making are the photo resist method and toner transfer with toner transfer being the worse, but more easily accessible choice.
The most consuming part of making a PCB depends on the project, creating a design for the schematic can take days or a few minutes, obviously depending on complexity, but in general I'd consider this part to be fairly short, if anything... Comment too long. Click here to view the full text.
>>947011 The final step of production is etching, depending on the etching solution time and results obviously may vary. Personally I use the mix of HCl and Hydrogen Peroxide. If the prep-work was done correctly, I end up with a good looking board in about 15 minutes of etching.
The most time consuming and error prone part of the process is the step of transfering the design from paper to your PCB. This step is why I personally use the photoresist method, since it produces much, much more reliable transfers.
Hello, I live in an apartment and I think that my neighbor spies on me. Every time I start a conversation I hear the sound of glass coming from my ceiling. My upstairs neighbor is a possible psycho and she loves to gossip. How do I check if she is really eavesdropping on me? I don't wanna beat on cold wood and play music all the time. I want to build my own eavesdropping device to check what she's talking about/the glass sound. I have a drill, mic, and basic soldering skills. I don't wanna buy anything expensive.
>>946973 No. You'll need a double-pole switch, or a transistor to switch the LED.
The problem you'll get if you put the LED in series is that LEDs have a forward voltage. The controller controller is expecting to see either open or 5v, but if you put in an LED it'll see either open or <5v - LED forward voltage>, which will confuse it.
Plus the internal resistance of the input pin is probably sufficiently high that you won't get enough current to light an LED.
Interesting projects threads. What are the favorite things you've worked for? Personally, I really enjoyed working on a miniature wooden chess set. I don't have any pictures right now, but it didn't turn out so well anyway. I went to put the magnets in the pieces, but I didn't consider the possibility that the magnets would be TOO strong. So the set is basically unusable because all the pieces try to latch onto each other. Pic not strictly related, another fun project, but not really interesting.
>>946759 My favorite project was just this last september. I had a thick piece of table top glass I got at an auction for $5 that had been sitting around for a couple years, and I decided to incorporate it into a coffee table for my best friends wedding gift. The most difficult part was faceting the tops of the legs, and I think it turned out great, especially for my first serious solo project.
On friday I'm getting my first 3d printer, second hand, a XYZ Da Vinci 1.0a. It only has about 40 hours of use on it and it comes with a ton of filament already. It's already had its firmware hacked so it can use other brands of Filament.
Now what I'm getting to is this.
I am going to attempt to make an actual working Pip-Boy Mark IV. Shut up it seems like a challenge.
But I don't want to use a cellphone for it. I'm aiming for a Raspberry Pi with a Touch Screen in it.
Now comes the Issue. I... Comment too long. Click here to view the full text.
When you need advice and pretty much everything, then I have to assume you haven't even tried to google the subject. As for the best source for the Pi. Their own forums. https://www.raspberrypi.org/forums/
Often the original installer will have disregarded the color-guide, and just wired the wires how-ever he thought to get it working.
This is why when you buy a thermostat, the instructions even say to mark the wires-connections on the OLD thermostat BEFORE removing.
With your pic, the only way I'd feel comfortable going about that, would be to go to the furnace and VISUALLY inspect what wires are connected to what terminals. For all you know they wired BLUE to the Common.
Just has a service call this morning, heat-only furnace. The guy had run 4 wire thermostat line, only needing the 2 wires, he connected the thermostat to the furnace on the BLUE and GREEN lines and pushed the RED and WHITE back. Madness.
here in socal its already into the 80s of degrees. im an island boy so its nbd, but its not even valentines day so im expecting the hottest of hot summers. i need help picking out an air conditioner. i was hoping to keep it around $115 but the problem is i have really retarded windows like pic related.
being three stories high i dont really have any options for securing it nicely outside. anyone got any ideas for what the fuck i can do? i can maybe go up to 200 bucks for the totalness of everything. not looking to invest in a stupid... Comment too long. Click here to view the full text.
For my physics class, I have to make a rotational equilibrium mobile. Objects of different masses are to be balanced on multiple hanging levels. We can use any set of objects for the project, as long as it has a central theme. I was thinking about getting a bunch of my little pony/horse dolls and titling my project "hung as a horse", but I don't think that'll settle well for a school project. Anyone have any other clever ideas?
>>946673 Wiring diagram? Its just a foot pedal for a flex shaft dremel. The wires were twisted together instead of being crimped. I just dont get where the red one goes if theres only black to connect it to.
>>945598 Thanks for the advice. Yes, I'm new at coin collecting. I bought some coins on eBay from auctions that had no bids, far below the price that they usually sell for (I researched prices using several tools before buying). I received the coins I purchased, however, many of them are coated in some kind of ancient dirt/filth.
Is there a risk of damaging coins in the process of cleaning them? Also, how much can one expect to gain in terms of price after cleaning the coins?
Hey all. Recently got into the diy world through cheap and creative solutions for my band equipment. I'm trying to figure out a way to attach 2 flight cases together. I could always do the standard casters and cups, but I want to figure out some sort of vaguely quick release system to lock them together for transport, but also be able to detach them without the use of tools once we arrive at the venue. Any ideas on what would be a smart move?
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