Electrical Engineering V2 - Developers

[QUOTE=danharibo;43359082]I figure this post might be interesting for some people in this thread [url]http://www.bunniestudios.com/blog/?p=3554[/url][/QUOTE] Holy shit that's pretty amazing! I wonder how hard it is to actually get your own code onto one of those devices in order to program it. I'd love to create a datalogger that can be directly written to using i2c, spi or uart.

So, I spent the last 2 days totally rearranging my lab, since i found the old setup too small and clumsy. Old setup (Sorry for shitty pics, taken with a potato in low light conditions): [T]http://i.imgur.com/jjcHEtw.jpg[/T] New neater setup with more space: [T]http://i.imgur.com/kBGgUIC.jpg[/T] [T]http://i.imgur.com/V2TqkxI.jpg[/T] [T]http://i.imgur.com/pKrH750.jpg[/T] Still need to add some lights, I think I'll install some LED strip, I have a few laying about. Anyway, I'm very pleased with the result, was totally worth of 2 days of effort. I also have a huge 2m x 1.1m whiteboard coming up! :D

That's a pretty good setup, I like it!

sooo much storage, I love it.

Awesome! im still waiting for my room to be finished so i can move my stuff in XD (I really cant wait til i get to lift up my 40Kg variac, 30Kg isolation transformer and all the heavy wire boxes up the stairs :/)

Just bought myself a 1F supercapacitor, and have absolutely no idea what I'm going to use it for :v:

[QUOTE=Leestons;43361148]Just bought myself a 1F supercapacitor, and have absolutely no idea what I'm going to use it for :v:[/QUOTE] [URL="http://www.youtube.com/watch?v=EoWMF3VkI6U"]http://www.youtube.com/watch?v=EoWMF3VkI6U[/URL] or [URL="http://www.youtube.com/watch?v=z3x_kYq3mHM"]http://www.youtube.com/watch?v=z3x_kYq3mHM[/URL]

[QUOTE=LoneWolf_Recon;43361355][URL="http://www.youtube.com/watch?v=EoWMF3VkI6U"]http://www.youtube.com/watch?v=EoWMF3VkI6U[/URL] or [URL="http://www.youtube.com/watch?v=z3x_kYq3mHM"]http://www.youtube.com/watch?v=z3x_kYq3mHM[/URL][/QUOTE] The first video "Wow, that beaver really took a pounding"

[QUOTE=scratch (nl);43359784]I've been wanting to make a remote or something so I started laying it out on a prototype board. What it turned into was some kind of DIY "Arduino" idea which is going to run using an ATtiny 84 [t]https://dl.dropboxusercontent.com/u/43645231/photos/electro/2013-12-30%2021.26.47.jpg[/t] The female headers will be connected to the ATtiny, and the jumpers are to be removed when I use said socket to plug a serial module in for wireless serial communication. This way I can just plug in anything I'd like into there, so I'm not just restricted to the serial communication module. The 4 buttons should be obvious and the one at the bottom is the reset button with a LED showing if shit's powered. The holes are seperate islands, but the very top horizontal row is all connected (and will be VCC) and the very bottom one will be GND.[/QUOTE] Doing an ATMega1284p Arduino build here. 3 of them will be the flight computer of a rocket I'm working on with a few others... Quick rocket specs: 6" diameter, ~10' tall. ~70-80lbs. Hybrid: Liquid N2O oxidizer, Wax+Aluminum powder fuel. 12kN of thrust I think.

I am connecting all my stuff on my prototype board with wires, but it looks messy. Are there downsides to connected several soldering islands together using solder to create a line?

[QUOTE=scratch (nl);43367031]I am connecting all my stuff on my prototype board with wires, but it looks messy. Are there downsides to connected several soldering islands together using solder to create a line?[/QUOTE] Not that I'm aware of, it's how I make power rails on my boards.

[QUOTE=scratch (nl);43367031]I am connecting all my stuff on my prototype board with wires, but it looks messy. Are there downsides to connected several soldering islands together using solder to create a line?[/QUOTE] Just make sure to use enough heat.

[QUOTE=Leestons;43361148]Just bought myself a 1F supercapacitor, and have absolutely no idea what I'm going to use it for :v:[/QUOTE] So where IS a good place to buy Supercapacitors anyway? Ebay and Aliexpress are confusing clusterfucks when it comes to finding sellers with cheap products matching your specifications. And don't make me laugh by suggesting Farnell, digikey or similar, fuckexpensive is the correct word to describe them from a broke hobbyists perspective.

[QUOTE=O Cheerios O;43375284]So where IS a good place to buy Supercapacitors anyway? Ebay and Aliexpress are confusing clusterfucks when it comes to finding sellers with cheap products matching your specifications. And don't make me laugh by suggesting Farnell, digikey or similar, fuckexpensive is the correct word to describe them from a broke hobbyists perspective.[/QUOTE] All-electronics tends to be alright as with Electronics Goldmine, however both of there stock varies. Mouser *can* be inexpensive when you poke around their [URL="http://www.mouser.com/Passive-Components/Capacitors/Supercapacitors-Ultracapacitors/_/N-5x76s/?Ns=Pricing|0"]inventory[/URL]

[QUOTE=O Cheerios O;43375284]So where IS a good place to buy Supercapacitors anyway? Ebay and Aliexpress are confusing clusterfucks when it comes to finding sellers with cheap products matching your specifications. And don't make me laugh by suggesting Farnell, digikey or similar, fuckexpensive is the correct word to describe them from a broke hobbyists perspective.[/QUOTE] I don't really know as this will be my first supercapacitor. I got this one from eBay for £2.50 including shipping. I have heard Electronics Goldmine mentioned a bit in the videos I've watched. Still not sure what I'll do with this.

This is the first time i heard about those sites, and god damn they got me drooling. Anyone knows European analogs to those?

[QUOTE=O Cheerios O;43375284]So where IS a good place to buy Supercapacitors anyway? Ebay and Aliexpress are confusing clusterfucks when it comes to finding sellers with cheap products matching your specifications. And don't make me laugh by suggesting Farnell, digikey or similar, fuckexpensive is the correct word to describe them from a broke hobbyists perspective.[/QUOTE] Availability, Quality, low Price. Pick two.

So my laptop has a design error where the center pin, of the of the power jack breaks off into the male end. Since my warrenty is long gone I replaced the jack, tested it and the computer booted up and was charging fine. But then I clumsily dropped a length of solder onto the motherboard and now it will no longer start. I realize that its probably fried and im out of luck. However im stubborn and refuse to accept this. I started checking the motherboard for shorts or scorch marks, anything that might reveal what the problem was, when I stumbled upon an area of the mobo that was getting extremely hot. I tracked it down to what appears to be a single small charging IC (rt8206a). Is there anything I can do? Is the hot IC just a symptom of the entire mobo being fucked, or does it sound like a localized problem. Im really bummed right now so any help is appreciated. Sorry for the formatting and amy typos im posting from my phone.

Maybe you should find out where that solder landed and remove it if necessary?

Soldering iron and extras arrived this morning. Whole day has been made.

[QUOTE=DrDevil;43386900]Maybe you should find out where that solder landed and remove it if necessary?[/QUOTE] Oh im sorry I should have made it more clear. It was an unmelted piece that fell. I was using it to solder the pads from the old jack to the new one. I turned on the computer to test it, mobo exposed, and dropped it accidentally. There was a quick spark and now it will no longer boot.

Was there any magic smoke? Because in that case a repair might become very much impossible unless it was a readily available component that blew.

[QUOTE=DrDevil;43390171]Was there any magic smoke? Because in that case a repair might become very much impossible unless it was a readily available component that blew.[/QUOTE] I didnt see any smoke. Just some quick sparks where it landed then it turned off.

[QUOTE=SteelReal;43391316]I didnt see any smoke. Just some quick sparks where it landed then it turned off.[/QUOTE] In that case, given the sheer density of components in a typical laptop motherboard, good luck finding whatever it is you burned out.

[QUOTE=Zero-Point;43392506]In that case, given the sheer density of components in a typical laptop motherboard, good luck finding whatever it is you burned out.[/QUOTE] Figured as much. Is it likely that the issue would be near where it wss dropped? Or even on the same side?

[QUOTE=SteelReal;43393642]Figured as much. Is it likely that the issue would be near where it wss dropped? Or even on the same side?[/QUOTE] Not necessarily.

Thinking about it, does it work with just the charger plugged in and with no battery? Just curious.

[QUOTE=Zero-Point;43399478]Thinking about it, does it work with just the charger plugged in and with no battery? Just curious.[/QUOTE] I had the same thought and it doesn't work with the battery and or the charger.

Where is the best place to get an Arduino? I want to make an automated switch for a green house. And should fakes be avoided?

[QUOTE=false prophet;43404500]Where is the best place to get an Arduino? I want to make an automated switch for a green house. And should fakes be avoided?[/QUOTE] Fakes are perfectly fine, in fact I'd recommend them over the real thing. Also automated switching is real simple, you'd probably be better off getting a attiny and buying / building a cheap AVR programmer, granted AVR code isn't quite as easy as Arduino code but if you can program already it should be no problem.