| Electronics > Beginners |
| Sequential tail lights |
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| tpowell1830:
--- Quote from: robjodicarter on September 27, 2018, 01:04:32 pm ---So how can I write the code for this style I will be using a sheet of LED's that are 20 high x100 long. Is there some sort of cheat or pre written code for this? I don't mind taking my time and learning just want it to be cool. https://youtu.be/tH_vNb1zkDw Thank you Rob Sent from my PH-1 using Tapatalk --- End quote --- Hi Rob, this is completely doable, although for a beginner, it is a learning curve. Those who were talking about using an Arduino for your solution have suddenly gone silent. This is a far cry from your original idea of 10 LEDs in a sequential row, but this can be done. If you look to the right of the lights in this video, you will partially see a breadboard with the electronics doing this for the narrator. This will all need to put on a protoboard after testing, and finally after the protoboard is tested live on your vehicle where you will simply rig it up somehow to test it, you will then need to get all of the components onto a proper PCB for the final product. This system will need to convert 12 volts to 5 volts, which is not a daunting task, but as you can see from the breadboard, there are a lot of components needed in order to create the system in the video. I don't think this is too far for a beginner to do, along with the help from the forum, however it is a far cry from your original idea of a single row of LEDs being sequenced out. Those who were encouraging you to go the Arduino or digital route seem to have stopped posting on this thread. However, if you feel you want to tackle this much more complex project, I suggest that you get the parts list from this YT video and then get your lab/work area setup with the essential tools you will need in order to be able to do this. There are multiple threads on this forum that lists all of the basic tools needed in order to setup an electronics lab. However, of you were to revert your idea back to a simple row of sequenced LEDs, the LM3914 is a much simpler solution that does not require that you have a 5 volt regulator and only requires a few simple parts. It will be interesting to see if this thread is revived with the multitude of different approaches again or one of the digital arbitters will come forward with a workable design and offer the assistance and tutillage that you will need in order to accomplish this. |
| Mr. Scram:
--- Quote from: robjodicarter on September 27, 2018, 01:04:32 pm ---So how can I write the code for this style I will be using a sheet of LED's that are 20 high x100 long. Is there some sort of cheat or pre written code for this? I don't mind taking my time and learning just want it to be cool. https://youtu.be/tH_vNb1zkDw Thank you Rob Sent from my PH-1 using Tapatalk --- End quote --- That should honestly be completely illegal. The various signals can easily be confused with each other. With some more care it could be better, though. It's perfectly doable, although a different kettle of fish than the initial idea. You'll need to start programming and multiplexing and probably protect your IC properly. Luckily AVRs are electrically fairly robust. |
| Brumby:
My thoughts..... 1. You can certainly do a multi-animation project - but forget about the LM3914. It's going to be a microcontroller or an insane amount of discrete electronics (that nobody here would even contemplate). 2. I would never suggest implementing such a diverse range of animations for a real vehicle used on public roads. These lights are for communication to other drivers and several of those animations serve no real purpose - unless, perhaps, it's advertising how geeky you are. If you want to do this for concourse displays or on the back of a monster truck inside an arena, then fine - but on the roads, it is very likely to cause confusion and will, without any doubt, cause distraction. Distractions cause accidents. 3. In implementing the 20x100 LED sheet we will need to know the connections it has in order to design the circuitry around it and define a programming approach. 4. We are all interested in seeing the OP achieve success, but this latest project is far more involved than the original single strip. With the single strip, building the circuit with 10 discrete LEDs and writing a short program would be easy, but the LED sheet is going to require more resources in designing, building and programming. I, personally, have not done much in the way of matrix display programming, so I'm sure that anything I put together would be clumsy ... and my time demands mean any assistance would stretch out. As a result, I'm not immediately putting my hand up - but that doesn't mean I don't want to help. It just means I don't want to make things worse. My thought was that the original 10 LED sequencer would be an excellent entry level project, introducing the OP to, say, Arduino - and then assisting him along the way as he explores more and more of the capabilities of today's exceptionally affordable electronics. I still think this is a good idea. |
| Brumby:
I feel that there are going to be many members here who aren't going to be comfortable jumping in on a whole project - but once the OP has started on something and comes up against specific challenges, then someone with experience in that area will likely chime in. It's going to be a community effort. |
| robjodicarter:
So I figured what I'm using, now I just need to figure out the easiest way to project what I want on to the LED's sheets. I'm using 2 8x32 pixel sheets(like the neo pixel sheets) now I just need to find the easiest and best way to control them. I was looking for different types of controllers for the automotive use but I think my best bet is to go with an Arduino uno board. I just don't know the first thing about writing code for this at all. I really thank all of you for help and input. Now I'm at a stand still. I know for all of you it's probably a daunting task but for me it's so exciting. From what I have searched it has not been done on a automotive vehicle. It may be an off road vehicle but it will be so awesome!!!! So if anyone could help me on how to control these with what I would need to drive the boards and how to write the code. I know it may take a bit being the biggest noob but it will pay off in the end. I will attach pics of what I want to use along with links incase that needs to be looked at. Again thank you all so much!!!!! Rob WS2812b Pixel Matrix,CHINLY 8x32 256 Pixels WS2812B Digital Flexible LED Panel Programmed Individually addressable Full Dream color lighting DC5V https://www.amazon.com/dp/B07418XNJ2/ref=cm_sw_r_cp_apa_L84RBbQ5EJ255 Elegoo EL-KIT-004 UNO Project Basic Starter Kit with Tutorial and UNO R3 for Arduino https://www.amazon.com/dp/B01DGD2GAO/ref=cm_sw_r_cp_apa_U-4RBb5G2D3Y7 Sent from my PH-1 using Tapatalk |
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