Electrical Engineering V2 - Developers

[QUOTE=Cakebatyr;47028859]If only there was some way to download them in batches, even just one archive file per year would be helpful.[/QUOTE] The pdf files have the exacty same name except for the year and month, so you should be able to write a little bash script that goes through the numbers and downloads all the files.

I made a C# console script. Also I just passed my amateur radio exam with 90/100 correct questions.

So I have an Avid Elevenrack guitar processor that connects to a Behringer FCB 1010 pedalboard via MIDI cable. So it takes 2 cords (power and MIDI) to run it. I was looking up a few mods for it. One is the phantom power mod which has you run 5v through the 2 unused MIDI pins and bypass the power converter in the pedalboard. Since I saw that, I decided to take it a few steps farther. I want to run MIDI In and Out (3 pins/wires each), power (2 pins/wires), and 2 additional footswitches (2 pins/wires each) in one cable. That means I need 12 wires that are hefty enough to carry 5v (1700 milliamps), and preferably one connector. I was thinking of using VGA connectors and getting a 20' or 30' cable, but idk what gauge wiring they use or how much power they can handle. Does anybody know if this would work, or if the cables could handle the power? Is there another connector out there you guys would recommend?

Ugh. I fucked up. I thought I bought two new rolls of solder. Well it is solder, however it's LEAD-FREE. In other words it's JUNK.

I only use lead-free and have never had problems. What's the fuss?

[QUOTE=papkee;47036942]I only use lead-free and have never had problems. What's the fuss?[/QUOTE] It doesn't flow as well as the good ol' leaded stuff.

[QUOTE=Leestons;47037185]It doesn't flow as well as the good ol' leaded stuff.[/QUOTE] I guess I've never used leaded so I wouldn't know. In other news, the power plant has gifted me with even more relays. [t]http://i.imgur.com/uOxilqT.jpg[/t]

So when will you reassemble the power plant in your room?

He might as well automate his place at that point.

Lol, so earlier today I was working on my teletype (because I totally did not forget I was working on that) and the switch burned out with a bang and a popped fuse. Totally forgot I had not yet swapped its underrated ass out for the proper replacement I was going to install. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8037.jpg[/IMG] New switch is MUCH better. Then ended up fabricating a metal strap so I could mount the phone bell and added in wiring to nearly complete the entire telephone circuit which all hangs off one bracket. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8040.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8045.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8048.jpg[/IMG] Now I got to figure out how the fuck I'm going to fit three PCB's in there for the microcontroller, relay and solid state switching circuits. There's almost no room.

[QUOTE=LoneWolf_Recon;47037343]He might as well automate his place at that point.[/QUOTE] Only problem is their coil voltages are all 120vac and a few 120vdc so I would really need even more relays to do anything automation-wise with these.

Relay logic.

[QUOTE=pentium;47037879]Relay logic.[/QUOTE] I've pretty much decided on doing something along these lines but I need to invest in some sockets for these things. But logic will look really cool especially because a lot of these relays have lights in them. Also if anyone cares [URL="http://ink361.com/app/tag/monkonestatelinegeneratingstation"]here's a set of photos from the power plant.[/URL] And here's what it currently looks like. Control room is still somewhat in-tact on the right side. [t]http://i.imgur.com/470yLey.jpg[/t]

[QUOTE=papkee;47038067]I've pretty much decided on doing something along these lines but I need to invest in some sockets for these things. But logic will look really cool especially because a lot of these relays have lights in them. Also if anyone cares [URL="http://ink361.com/app/tag/monkonestatelinegeneratingstation"]here's a set of photos from the power plant.[/URL] And here's what it currently looks like. Control room is still somewhat in-tact on the right side. [t]http://i.imgur.com/470yLey.jpg[/t][/QUOTE] Awesome. Is there any way you could find or get hold of the building's floor plan / dimensions and so on? Fuck this needs to be made into a map.

Do those of you whom use leaded solder take safety precautions?

[QUOTE=Kirth;47039322]Do those of you whom use leaded solder take safety precautions?[/QUOTE] As long as you wash your hands properly afterwards there is nothing to worry about. The fumes don't contain any lead either.

[QUOTE=ddrl46;47039626]As long as you wash your hands properly afterwards there is nothing to worry about. The fumes don't contain any lead either.[/QUOTE] The fumes are mostly harmless for leaded solder. Just don't inhale them directly and work in a well ventilated area (aka open your window). The flux used in leadfree on the otherhand ist quite a lot nastier.

[QUOTE=Kirth;47039322]Do those of you whom use leaded solder take safety precautions?[/QUOTE] Yeah, I don't eat the solder.

[QUOTE=nikomo;47039946]Yeah, I don't eat the solder.[/QUOTE] I confess I did at one point when I was younger .-. (probably why I'm so fucked up.)

If you are worried about solder fumes you can just put some small 12v 120mm fan and make it blow the fumes towards a window or an open space, we used to do this at work before we had proper ventilation systems installed

[QUOTE=Kirth;47039322]Do those of you whom use leaded solder take safety precautions?[/QUOTE] I wash my hands after soldering but that's it.

Building a radio is very exciting, so far I've blown a speaker and a 100k pot :dance:

I'm thinking of buying a wireless mic kit and putting it together, mostly for shits and giggles.

[QUOTE=Kirth;47039322]Do those of you whom use leaded solder take safety precautions?[/QUOTE] I keep my fingers out of my mouth during and after soldering, yes.

[QUOTE=Kirth;47039322]Do those of you whom use leaded solder take safety precautions?[/QUOTE] Finish working with solder, wash hands, clean up my desk and wash hands again. Put everything back in labelled bins and wash hands. That's it for me.

"Clean up my desk" I think we all know what our desks look like, let's not lie to ourselves.

I just brush stuff like trimmed leads, bits of solder and stuff onto the floor, the clean the carpet every few months. In other news, I went out and bought new rolls of leaded solder.

[QUOTE=papkee;47016578] [t]http://i.imgur.com/T7z3ste.jpg[/t] [/QUOTE] So I'm working on getting this thing operational. I've found a transformer that'll bring 120v down to 70v, now I just need to find a current sense transformer that will bring 15a down to 8a. Anyone know where I can find a 1:2 current transformer? The major outlets don't seem to carry them because it's a very odd ratio.

More magic. The 20ma current loop to RS-232 adapter was relocated from the back of my modem to inside the teletype machine. There was a convenient spot that just fit it so after bolting in standoffs it was ready to go. Still need to feed it +12v but that portion has not been completed. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8053.jpg[/IMG] Also prepared some ribbon cables. One run of RS-232 to/from the modem and adapter, another sends register status data from the modem to more logic to be built in the teletype and the smallest cable is a telephone connection to the dialer in the teletype. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8056.jpg[/IMG] Kids, don't tell your phone company about some of the shit you plug into their lines. Totally not designed for the task but this junction provides a line in through the modular jack, a line out to the modem and the line to the teletype. It hides in a corner under the teletype's stand. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8051.jpg[/IMG] The phone dialer circuit is almost complete. Save for one resistor and one capacitor of unknown values it's ready for testing. It's amazing how small you can make a telephone wen you remove touch tone dialing and voice functions. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8059.jpg[/IMG] I'm also not able to replace all the bulbs for the illuminated buttons doe to different voltages and they;re something like $5 a bulb. Instead I paid $7 for a half dozen 6V Grain of Rice bulbs. Running them at 5V makes them a little dimmer but they last a lot longer. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8060.jpg[/IMG] [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8063.jpg[/IMG] Lots of progress today, but still a lot left to go. Edited: Took another 20 minutes to swap the two wires on the adapter with a two pin header, then wired int he RxD and TxD loop connections before plugging the modem in and testing the circuit. Took a few minutes to figure out why the circuit was dead until I noticed the loop power jumper was removed. Popped that back in and I was dialing into a local machine. Update: Was up early so I completed the Motor Stop Relay circuit. The nice thing about Automatic Answer is that you can set it and forget it however on a teletype that can mean days or hours of idle time which wears the mechanics out. Instead, when the AA register is active a logical FALSE statement is created which allows a relay to energize and open, causing the teletype to remain on but the motor to turn off. When the AA and CD registers go active (someone called the modem and it has established a connection) a logical TRUE statement is generated which causes the relay to turn off and the motor to start. A snubber prevents the coil from blowing out the power transistor. [IMG]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_8083.jpg[/IMG] As per usual, the modification was built so that it can be removed in the future.

I swear, I'm surrounded by AMS1117 voltage regulators. Everywhere I bloody look, there's an AMS1117. I just opened a USB DVB-T stick I used to use for SDR, AMS1117-3.3 on the board. Might as well get a bag of them or something from China and embrace the regulation.