soldered 56 Cree Xlamp XP-E surface mount LEDs last night using a halogen lamp. Worked surprisingly well.

4/11/2010 8:21:51 AM

true story?

4/11/2010 8:48:15 AM

yes

4/11/2010 8:49:36 AM

p.s. nobody gives a good god damn

4/11/2010 8:50:10 AM

ok troll

4/11/2010 8:50:39 AM

who's the troll, troll?

4/11/2010 8:51:06 AM

so a better question is... why did you do it?

4/11/2010 9:01:32 AM

Senior Design is getting down to the wire, didn't really have time or budget left to send it off

4/11/2010 9:07:31 AM

cool, good luck.

4/11/2010 9:10:37 AM

I have not clue what the OP said.

4/11/2010 9:11:42 AM

^he stuck some little lights onto a circuit board using a really hot light bulb.

4/11/2010 9:43:51 AM

you're not down to the wire in senior design until you're holding the solder in your teeth, tweezers in one hand, soldering iron in the other, with the chip taped down to the board with scotch tape and all the tape/solder fumes going straight up your nose.

4/11/2010 9:51:00 AM

if the chip is taped down why would you need the tweezers?

4/11/2010 9:53:17 AM

it puts the pictures in the thread or else it gets the hose again

4/11/2010 9:57:02 AM

i'll take some later

4/11/2010 9:58:02 AM

Quote :

"if the chip is taped down why would you need the tweezers?"

The tweezers were holding the wire that I needed to solder to the chip, but the chip get lifting up off the stupid board...

There were a lot of better ways to solve the problem, but this was about 5 minutes before the demo and I had very limited resources/time

gg on your senior design project... what is it?

4/11/2010 10:04:38 AM

It's a self monitoring indoor vegetable garden, we've got a microcontroller taking readings off of sensors and controlling the light timing and fans for temperature control, we've got a water level sensor (just a float on a potentiometer), humidity sensor, pH probe, EC meter(that was fun to build) to check the nutrient solution. The microcontroller will send a signal to an annunciator when the EC, pH, humidity, or water level get out of bounds.

It has a modular enclosure made up of 3 3x2x2 sections that stack, The top will have a separator 1 ft from the top to allow for a cabinet for storage. The watering system is just a deep water culture set up (just a sterlite tub an air pump and a water pump set up for a drip for the early stage of growth).

The user will input parameters on the microcontroller, bounds on the temp, pH, and EC, as well as timing for the lights, via VT100 terminal through RS232. They can also check exact readouts from the sensors and how long left until the lights switch. For power we took and modified a computer power supply, bumped the 12v output to about 17.4v and the 5v to 7.7v.

So far its been a really fun and challenging project to work on, its coming together save for a few problems with some error in our light current control circuits and our sensor circuits, we're hoping to fix that soon though

4/11/2010 10:22:07 AM

Sounds pretty lame.

4/11/2010 10:25:09 AM

at least i'm making something

what was your senior project, writing a paper on how to effectively use a webcam to convey a message to a larger audience

get the fuck outta here chass major

4/11/2010 10:28:25 AM

A touch defensive, are we?

4/11/2010 10:30:41 AM

Nothing like being dismissive of someone else's hard work.

4/11/2010 10:31:33 AM

^^nah just pointing out your general uselessness

[Edited on April 11, 2010 at 10:32 AM. Reason : ...]

4/11/2010 10:32:03 AM

Did he really expect to make a useless thread like this in chit chat and get nothing but "good job dude" posts?

He can't be that dumb.

4/11/2010 10:35:44 AM

ITT Ronny adds to the quality of Chit Chat

4/11/2010 10:38:41 AM

At 10mA each branch.

4/14/2010 2:21:35 AM

SWEET NOW I DONT EVEN HAVE TO GO TO MY GROW HOUSE EVERY DAY

4/14/2010 2:27:18 AM

you had to do a senior project

my major rules

4/14/2010 4:27:33 AM

I think this may be the answer to my Xbox red ring of death problem! ...

4/14/2010 9:19:14 AM

Sometimes I wish I were another type of nerd.

4/14/2010 9:21:52 AM

AT LEAST HE IS MAKING SOMETHING, OK?!

ONLY ENGINEERS CAN CREATE THINGS!

4/14/2010 9:32:09 AM