Starship Modeler Discussion Forums

Awesome tetsujin! Something I can modify for pseudo-randomly lighting the windows in the 18" E. Thank you for posting! Shift register, hadn't considered it.

<a href="http://www.goldmine-elec-products.com/p ... 300">These little gearheads are only $8.95 each until the 5th (Jan).</a>

<a href="http://www.allelectronics.com/make-a-store/item/DCM-318/12-VDC-58-RPM-MINI-MOTOR/1.html">58 RPM, 12 V, 20mA</a> <a href="http://www.allelectronics.com/make-a-store/item/DCM-285/MINI-GEARHEAD-MOTOR-166-1-RATIO/-/1.html">48 RPM, 7.5V, 21mA</a> Hey, I finally actually boug...

You got it Dunsel! Make sure you get 'em centered well, these babies prolly have a lot of torque. I hope they're pretty quiet in there. We'll see.

TREKKRIFFIC wrote:Wish I'd known about these when I built my 18" about 4 years ago. Would've saved me a lot of time and effort building gear boxes from scratch !

I've done that before too. It was not pretty.

Here are some small gearhead motors that could spin Paulbo's photoetch Bussard blades for the classic 18" E kit, courtesy All Electronics. <a href="http://www.allelectronics.com/make-a-store/item/DCM-318/12-VDC-58-RPM-MINI-MOTOR/1.html">58 RPM, 12 V, 20mA</a> <a href="http://www....

Okay, if that thing fits on your head I'd say you're a geek. :) I wear something similar when I take my telescope out. Usually I think of a geek as being someone who is so socially awkward that people are repelled or someone who can't communicate. You fit a loose definition as do I, but not my narro...

Good score Pat! You never really struck me as being a geek. You seemed pretty personable and together. I scored a tiny radio that I want to use now for a burning effect in a destroyed Excalibur. Thinking of using a CMOS seven segment display driver in conjunction with some AND gates to channel the s...

Cool, I'm gonna try this for a welding effect. AM radio is nothing if not noise.

If you want to get nuts and do it in CMOS, you'd be using binary 7 segment displays and you can employ the the 4078 8 input NOR gate chip inhibit the count at zero. You'll have to get the CMOS Cookbook and figure it out for yourself. The 4078 has a pin that goes high only when all 8 inputs go low wh...

I got excellent results lighting a single clear acrylic rod from the ends and painting it white then covering it with foil to prevent light leak. Run the ends a bit long. I used 2 blue super bright SMD LEDs on each end of the rod. Rough up the acrylic just at the engine opening to give a more diffus...

I'm wondering if a dab of black E-6000 plastic glue wouldn't be a good choice for both strength and light blocking properties. Might melt the strand... Hmm... Time for a test.

Welcome to the boards RC. You might try lighting your figure through a fiber optic(s) strand(s) and have the electrical bits below in a base. That's a more likely to fit scheme.

Hi PetarB, Yeah you can do what I did too. Cut a piece of clear acrylic sheet and then light it with superbrite LEDs. Use aluminum tape stuck to the acrylic to prevent light leak. You could also paint the acrylic white to brighten the light a bit before the aluminum tape goes on. If you want to go v...

Huh... I know in our woodworking shop we never put a newly stained or finished piece out in the direct sun. It can heat up the wood and send gas out that causes spotting on the surface. I wonder if resin might outgas when warming in sunlight. I realize you didn't say you set in in the sun or that it...

Yea brethren, for what does a man profit if he saves his Denari and loses his Alves? ...for he will make a desert of your forest moon.

I got some Alves, best thing since blue milk. Made some holding tanks for my docking bay 94 diorama. It works well.

Damn these are bright... with the lenses sanded off they should work well in one of my FMMF engines. Muhuwa! My evil plans advance. Thanks again for the tip Zog, and you may have my fries.

I'm getting some.

Thanks Zog.

Okay, Ive finally gotten the chance to play around with the BS170 somewhat. I got one to work well in the solderless breadboard. Correct me if I'm wrong, but the gate must be negative. Given that the output of the 7557 is positive, what do I need to put in between to get the signal to the gate to be...

Thanks Frank,

I'm getting parts for the circuit and struggling with Eagle a bit. I downloaded a couple other schematic programs, but Eagle appears to have all the devices in it I need to use in it.


Nate

Okay guys, I'm scraping my wits together and learning about transistors and mosfets. Thanks for the tip about the bs170 jwrjr. One question Frank: Remember the freeware schematic program that comes up with a printout of a board design? What was that? I had it on my long dead laptop and now I can't r...

That's good news about the solid state relays. Transistor eh? Don't like to admit it Frank but those suckers have never worked for me. ](*,) Can you suggest anything to get me over my fear of them? Anything like the javacript LED series resistor calculator for transistors or mosfets out there in you...

:help: Does a solid state relay have an indefinite life if you don't abuse it, or is it rated for so many cycles? I'm thinking about using one or two to flash my FMMF lights. Before with the blue lights I built, the brightness, while pretty good was definitely limited by the 556 chip used to flash t...

Yeah I wonder. My guess is pneumatic. Some guy blowing on a tube. I'm probably wrong though.

Well, that's welcome good news. Thanks as usual Frank. I'll pick one up and solve my little problem. Since the Yamato is for my nephew and his friends to sink, I can afford the $14 servo. Gotta hand it to you Frank, your advice is often my departure point for new forays into techniques and electroni...

Don't servos have stepper motors and need a pulsed current. I'm wondering because I'm scavenging an old crummy RC car to run a ship model and the steering element that ran the car steering is bad. It outputs a constant 6VDC, alternating directions as you use the controller. Can I run a servo with th...

This was what the basement looked like before I junked it up again.
http://www.kc6sye.com/images/images_07_ ... _after.jpg

Dude, can I come over and hang out? We're simpatico with the whole basement thing.

Wow those strip LEDs are cool! Thanks for the tip, I have to get some now.

There are 7809s. I bought a few from Electronic Goldmine a few weeks ago. They will work with your 12V supply. You may need a heatsink.

Yeah the CMOS cookbook calls it the bypass. Thanks Frank. I'm just flashing in the astable mode. Hopefully I can get enough current through each side to run 14 25mA LEDs. We'll see. I have my doubts.