Search found 192 matches

by brt
Mon Jan 01, 2024 6:46 pm
Forum: Finishing
Topic: Airbrushing 101
Replies: 3
Views: 829

Re: Airbrushing 101

I read the first page and have bookmarked it. If I may be so bold, I found the color of the font to be uncomfortable to look at. Do what you want with that opinion.
by brt
Mon Jun 12, 2023 11:06 am
Forum: Wonderfest 2023
Topic: Wonderfest 2023 contest photo gallery
Replies: 10
Views: 15687

Re: Wonderfest 2023 contest photo gallery

Doomsday Machine! Awesome!
by brt
Fri Jul 22, 2022 5:58 pm
Forum: Lighting & Electronics
Topic: LED flexible filament
Replies: 13
Views: 25669

Re: LED flexible filament

Now the real challenge is finding a tubing that is clear that I can run the filament through to achieve rigidity. I am thinking a ball point pen ink tube. So far all I have are a bit to small. I suppose I can bore it out with a 2mm drill bit. Also thinking of using conductive epoxy or glue instead ...
by brt
Thu Jul 14, 2022 5:18 pm
Forum: Lighting & Electronics
Topic: Looking for a (Simple) LED Flasher Circuit
Replies: 10
Views: 13189

Re: Looking for a (Simple) LED Flasher Circuit

Hello Braintrust! Does anyone know of a (simple) circuit for blinking two (or more) LEDs on and off at the same time? I know I could do this with an Arduino, but in this case I’m hoping to avoid the expense. Any help would be appreciated! -Tc How about you buy a flashing LED and run a few regular L...
by brt
Thu Jul 14, 2022 5:16 pm
Forum: Lighting & Electronics
Topic: Looking for a (Simple) LED Flasher Circuit
Replies: 10
Views: 13189

Re: Looking for a (Simple) LED Flasher Circuit

I read somewhere, a few years back, that the voltage drop across the 555 timer is 1.7 volts. So you realyy need 5 volts to run the average 3mm LED. Several colors require 3.3 volts, although some colors, less.
by brt
Wed Mar 30, 2022 10:20 pm
Forum: Scratchbuilding
Topic: Please Recommend Good Blender Instructional Material
Replies: 6
Views: 17399

Re: Please Recommend Good Blender Instructional Material

https://www.youtube.com/watch?v=ccOk5JW ... x=2&t=459s

Blender 2.9 for beginners. I have watched part of it and it seems like a good introduction.
by brt
Sun Mar 06, 2022 5:59 pm
Forum: Lighting & Electronics
Topic: Another 555 timer question
Replies: 1
Views: 5497

Re: Another 555 timer question

I found this answer online as I was curious. 470 to 10 microfards is a big difference. Bert Hickman , studied Electrical Engineering at University of Illinois at Urbana-Champaign (1970) Answered 2 years ago · Author has 2.4K answers and 2.3M answer views Originally Answered: What would happen if I r...
by brt
Tue Feb 15, 2022 12:23 pm
Forum: Finishing
Topic: Finishing: Home-made decals
Replies: 70
Views: 274024

Re: Finishing: Home-made decals

by brt
Thu Aug 26, 2021 3:56 pm
Forum: Lighting & Electronics
Topic: What glue for mounting SMDs to styrene
Replies: 3
Views: 8323

Re: What glue for mounting SMDs to styrene

Thanks. I have both on hand. :8)
by brt
Tue Aug 24, 2021 4:17 pm
Forum: Lighting & Electronics
Topic: What glue for mounting SMDs to styrene
Replies: 3
Views: 8323

What glue for mounting SMDs to styrene

I am trying to mount 0805 SMDs in a 1/1000 refit for navigation and strobe lights. What can I use on the lens (lighted surface) of the SMD without damaging or obscuring it? Btw, I tried canopy glue and it wouldn't hold.

Thanks
by brt
Wed Nov 07, 2018 8:33 am
Forum: Construction
Topic: For those that cast ships internal support question
Replies: 2
Views: 16585

Re: For those that cast ships internal support question

Ugh models had piano wire in some models to support the nacelles.
by brt
Wed Jul 18, 2018 2:19 pm
Forum: Lighting & Electronics
Topic: Bendable EL Wire
Replies: 12
Views: 36247

Re: Bendable EL Wire

by brt
Sun Jul 15, 2018 8:08 am
Forum: Lighting & Electronics
Topic: Bendable EL Wire
Replies: 12
Views: 36247

Re: Bendable EL Wire

Not high voltage if an arduino is lighting it up. video shows it plugging into one. That would be 3 or 5,5 volts depending on the arduino model.
by brt
Fri Jul 13, 2018 4:20 pm
Forum: Lighting & Electronics
Topic: Bendable EL Wire
Replies: 12
Views: 36247

Re: Bendable EL Wire

So what happens if you want shorter lengths?
by brt
Sun Jul 01, 2018 11:30 pm
Forum: Lighting & Electronics
Topic: Just Bought an Arduino Experimentor’s Kit
Replies: 13
Views: 52268

Re: Just Bought an Arduino Experimentor’s Kit

Thanks for the links. :8)
by brt
Sun Jul 01, 2018 12:07 pm
Forum: Lighting & Electronics
Topic: Just Bought an Arduino Experimentor’s Kit
Replies: 13
Views: 52268

Re: Just Bought an Arduino Experimentor’s Kit

Where do they teach coding?
by brt
Tue Apr 17, 2018 4:28 pm
Forum: Lighting & Electronics
Topic: Reducing LED Brightness?
Replies: 12
Views: 37070

Re: Reducing LED Brightness?

That's what I did. :)
by brt
Mon Apr 16, 2018 7:22 am
Forum: Lighting & Electronics
Topic: Reducing LED Brightness?
Replies: 12
Views: 37070

Re: Reducing LED Brightness?

I've already used a trim pot in one of my models to adjust brightness. Works like a charm. I plan to keep doing it.
by brt
Fri Mar 30, 2018 11:07 am
Forum: Lighting & Electronics
Topic: Reducing LED Brightness?
Replies: 12
Views: 37070

Re: Reducing LED Brightness?

Use a variable resistor/ trimpot. https://www.google.ca/search?source=hp&ei=nmC-WvGSGM28sAXS5oWgCw&q=variable+resistor+trimpot&oq=variable+resistor+trimpot&gs_l=psy-ab.1.0.0j0i22i10i30k1j0i22i30k1l5.1023.6346.0.10537.25.21.0.4.4.0.182.3118.0j21.21.0....0...1c.1.64.psy-ab..0.25.3374.....
by brt
Sat Mar 24, 2018 11:10 pm
Forum: Lighting & Electronics
Topic: Identifying Mystery LEDs?
Replies: 5
Views: 19519

Re: Identifying Mystery LEDs?

probably an easier way with your meter than this, but hook them up to a variable resistor/ trim pot and gradually turn up the juice until the LED lights up.
by brt
Fri Mar 16, 2018 12:22 pm
Forum: Lighting & Electronics
Topic: Looking for a 3 LED Flashing Circuit
Replies: 6
Views: 21077

Re: Looking for a 3 LED Flashing Circuit

If you are comfortable with wiring in parallel, that's the way to go. Your wiring a resistor and LED in parallel should be fine. You'll need about 5 volts for the parallel version if using a 555 timer as the voltage drop is 1.7 volts with the timer, leaving 3.3 volts for the LEDs.
by brt
Mon Mar 12, 2018 9:28 am
Forum: Lighting & Electronics
Topic: NEW: flickering SMDs
Replies: 4
Views: 20375

Re: NEW: flickering SMDs

Jerry at HDA Modelworx has requested his factory to custom make flickering 0805 SMDs. AFAIK, nobody else has these. He's sent me red, blue, yellow, green, white, and warm white flickering SMDs and these are pretty cool. My mind is working on what I could use these on. These are neat. My mind says d...
by brt
Sun Dec 03, 2017 11:17 pm
Forum: Lighting & Electronics
Topic: Using Aviation Power Connector
Replies: 2
Views: 9897

Re: Using Aviation Power Connector

Search for pieces online. Search youtube for 4 pin soldering tutorials.
by brt
Fri Dec 01, 2017 6:02 pm
Forum: Construction
Topic: Corrugated conduit to hide wires
Replies: 4
Views: 14472

Re: Corrugated conduit to hide wires

How wide is the stand between model and base? I would think a long piece of shrink tube would coral your wires and fit nicely down a hollow stand and be flexible.
by brt
Wed Nov 01, 2017 4:15 pm
Forum: Lighting & Electronics
Topic: PCB design
Replies: 8
Views: 23986

Re: PCB design

Failing that, you could use a small breadboard, 170 points/ties at a size:1.85*1.38*0.33inches.

I kept thinking and how about this? https://www.sparkfun.com/products/12702

A solder-able breadboard.
by brt
Tue Sep 12, 2017 7:21 am
Forum: Lighting & Electronics
Topic: Micro Electronics Soldering Station
Replies: 2
Views: 9388

Re: Micro Electronics Soldering Station

Check out reviews on amazon. Do you just need a station or the iron as well. A 20 watt iron was not hot enough for me. I'm also using non leaded solder as well so a hotter, variable temp iron has worked out better.
by brt
Sat Sep 02, 2017 10:38 am
Forum: Lighting & Electronics
Topic: Powering LEDs without resistors
Replies: 5
Views: 12566

Re: Powering LEDs without resistors

Or buy pre-wired leds and smds that have a resistor already soldered in at specific voltage values.
by brt
Sun Aug 27, 2017 9:37 am
Forum: Lighting & Electronics
Topic: Why is my 555 timer not blinking?
Replies: 30
Views: 371413

Re: Why is my 555 timer not blinking?

I ain't no Geordi and I figured it out from the same link that I posted above. I think you have to watch out for polarity. If it doesn't work lined up in one direction, turn it around and try it the other way. Well, I still don't understand it. Plus, I cannot get it to work the way the instructions...