SlotForum banner
61 - 80 of 90 Posts

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #65 ·
I spent the afternoon on electronics. I now have all the pieces working, but I am struggling to get all the pieces working together. The running lights will not stay on when I run the LED matrix, and I cant seem to incorporate the blinking LED code into the existing LED matrix code. Im going to try again tomorrow, but I may just use a second Arduino as I am anxious to see some progress. I also will be running the LED matrix and running lights off of separate 9v batteries.

Here is a pic of the current set up...

Table Desk Electrical wiring Electricity Computer hardware

Right now it is connected via WIFI, so I can send any message I like through a web page, but Im thinking of some of the other visual effects rather than constantly updating the text. I also think the screen could have some break time to save battery life. I dunno. What do you guys think?

More to come.

Heath
 

Attachments

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #66 ·
Continue to make progress. I made a small plastic circle that goes in the front to access the USB cable for the Wemos chip, so I can reprogram it anytime I would like. Also, two on/off switches, one for the running lights and one for the LED Matrix. I'm mounting it so it's attached by magnets so that It can be removed to replace the batteries if needed. Next step is to mount everything inside and check the balance point so when it's hanging it isn't nose or tail heavy. I also need to mount all the running lights.

Hood Automotive lighting Automotive tire Automotive exterior Trunk

This is the L Brackets for the circle plate. I will be mounting a magnet on each of these.

Peripheral Input device Gadget Audio equipment Material property

Gadget Automotive lighting Audio equipment Electrical wiring Gas

Circuit component Passive circuit component Electronic engineering Computer hardware Electronic component
 

Attachments

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #67 ·
After much fiddling, I managed to get the navigation lights functioning correctly...


Ive also managed to get the demo routine customized and the lights dimmed down to conserve batteries. Video coming soon.

Im going to put a lithium battery in there as they seem to last a lot longer. I left the system hooked up to the battery for 15 minutes with the demo program going and the battery went dead.

Hopefully things will last a lot longer with the demo turned down to minimum intensity and a better battery.

More soon!

Heath
 

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #68 ·
So, in my never ending quest to go crazy with this project, after staring at the missing pieces on the engines for a while, I thought about the pager motors I had sitting around left over from my 1/87 scale track. They actually were the perfect size. Then I borrowed some of the spare props from my daughters mini drone and chopped them down to size.


Really happy with the way its looking and I think it takes the model to the next level. Im holding the bottom of the gondola up for a size reference.

Im running the motors in series and one seems to stall sometimes so Im thinking maybe I need to run them in parallel with a voltage divider. Anybody have an idea on this?

Thanks for reading.

Heath
 

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #69 ·
I managed to get most of the wiring set up for the lights and the motors. Someone on Instagram mentioned that the light by the gondola should be white. This won't be the most accurate model of the blimp (in fact, I'm taking a lot of artistic license) but I thought a white light would be a good idea, so I swapped the red out.

Running the motors at 9 volts even wiring them serially meant they were super loud and I threw off the propellers. So I used a 5 volt regulator...


Still, super loud. So and took the voltage down to 2.5 volts. Running the motors serially, there was not enough power to run both motors and one motor would work well and the other one, I would need to spin the blade to get going and then it would still be going slow.

So, it seems that 1.5 volts running the motors in parallel is the way to go. Where the motors go fast enough to look good, but doesn't sound annoying.

My next step is to try a voltage divider to get it down to 1.5 volts and see if that works as expected. I've also ordered a 1.5 volt voltage regulator, as I understand it's much more efficient to use a voltage regulator.

I also modified the LED matrix programming to dim down the LEDs, get rid of some of the things that didn't make sense, and add some text. I'm waiting until I have the whole thing put together for the full LED matrix reveal.

Thanks for reading. Slow progress, but it's getting there.

Heath
 

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #70 ·
Electronics all hooked up now...


1.5v regulator worked like a charm. Motors still buzz; but its not super loud.

Now I just have to put everything in, seal it up, and paint it. Then work on the cart thing.

Thanks for reading.

Heath
 

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #72 ·
Thanks so much Weltmeister. I'm pretty excited about it and being close to finished on it.

I mounted the LED matrix last night, fired it up, and of course, it did not work. :( Luckily it was just some misplaced wires and was easily fixed.

Then I got to thinking about the batteries again, I'm not sure how easy they will come out of the shell once I seal it up. I'd like it if I could just have a USB cable that I could plug in to charge it up without pulling the batteries out.

I'm looking around for a circuit that would charge both 9v batteries off of USB, so I could just plug the blimp in after each race night. Any electronics gurus out there with a suggestion for this?
question.gif


Heath
 

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #75 ·
Finally just went for it and put the pieces together. There were a lot of wires in there!

Pic of where Im at...

Hood Light Blue Motor vehicle Automotive lighting

Next up, seeing where the balance point is for hanging it up.

Heath
 

Attachments

·
ParrotGod
Joined
·
8,231 Posts
that 9 volt conversion is really cool. Something that could be used for the SCP2 battery holder...
 

·
Banned
Joined
·
1,694 Posts
KJDOT in his video above is using a RC '3.7v 500mAh 25C Li-Po Battery'

Then a 'Adjustable Step Up 18650 Lithium Battery Charging Discharge integrated Module' to step up the voltage from 3.7V to 9V with an output max current of 0.8A as per spec sheet. It has an optimum charging voltage of 4.2V, could this setup be under-performing?

I have no experience of RCs batteries (above Li-Po battery is footprint of 32*26*8mm), could we make a more powerful and efficient USB 9V battery?

What's max mAh of an RC battery available for that footprint, 3.7V is the standard, are there higher voltage batteries available?

What spec of batteries are used/required in SCP2 controllers, how long does a standard branded alkaline 9V battery last, do they draw a lot of power?
 

·
Registered
Joined
·
2,732 Posts
Discussion Starter · #78 ·
I got the blimp airborne today...

Aircraft Vehicle Missile Aerospace manufacturer Airplane

Balance seems surprisingly good. Getting excited to get closer to the end.

Heath
 

Attachments

·
Circuit Owner
Joined
·
5,913 Posts
Why not hang it from a *********** cable? Wiring a mains to 9V PSU into your lighting circuit is a possibility given the relatively low current draw. You may want to run it without the room lights on but usually a lighting circuit will have a permanent live you can connect to and even run a separate pull cord switch to isolate it. It depends on how accessible your ceiling space is.
 
61 - 80 of 90 Posts
Top