1/27/2024 0 Comments Rgb common cathode ledIf you use the editor and ignore 99% of the rules required for the old parts creation then parts creation for everything except the breadboard is really really easy. I am tired of explaining how things are done using the new editor after someone else has explained how things were done at the beginning of Fritzing before the editor and trying to force rules on people that make ZERO difference in a parts usefulness while making parts creation seem way way harder than it actually is. Actually the advice on parts creation being given is one of the reasons I have stopped helping as often. If you only have the one layer like you and Peter suggested then you will only be able to use the part on one side which is useless unless you only make single sided boards or label all your parts as being top or bottom or open each SVG before using a part to make sure it is for the side you are Please upload the part you made that does that to see why you are getting it wrong and so I can explain again how to do this so you guys stop giving the wrong advise. I only have the paths in the one group which is inside the other group. I only work with SMD parts (with the exception of headers and wires and Nixie tubes) and have made hundreds of parts for myself and I always have both layers. How did you do that? I would guess that you edited some through hole part that makes Fritzing think this is supposed to be on both sides at the same time. If I needed and underside part I would just swap the copper1 for copper0 in the svg and make another part. I don't have any specs for the RGB LED other than that it is (supposed to be) common-cathode.Not a fan of copper pads floating around on the underside of a PCB, plus not many people double load, so I would prefer just copper1. I have 12V, 5V and 3.3V power available already, and am running a Teensy 3.2 for this project which uses 3.3V itself so that's what its data lines are going to be. If I was told the solution involved parts I didn't happen to already have, I'd just go get them. Since I'm happy to go obtain whatever alternate/better components I need, I was just trying to keep the post concise. ![]() I also have IRFZ44N MOSFETs but I imagine those would be overkill. Well, I have a lot, and am not locked-in to what I have and am happy to acquire additional parts. When and if you do that, we might better understand what is involved and the easiest way to operate it. OK, now 14 posts to date, I would have thought you had at least read the instructions and comprehended the need to cite exactly what part you have on hand when you ask for help. Unfortunately the newcomer who finds dozens of mentions on the internet of a possible solution doesn't always also find the one that says "X part is now outdated, use Y instead." Happy to learn what the better/newer option would be. it wasn't a part I already had, but was something my research had lead me to learn was an AIO potential solution targeted for just the sort of thing I'm doing. Please don't go buying junkyard (obsolete) parts, even if that is what they cleverly dump in some Arduino "starter kits"! I did find this which is close to what I'm trying to accomplish: I think with that sorted out, I can probably figure out the wiring. I'm struggling with understanding whether I should be using PNP or NPN transistors for this. I also have a variety of resistors on hand. Since it's just a single RGB LED, I read that each segment should only use about 20mA so pretty much any of my transistors should be able to handle the current (the BC337 is rated for 800mA). I have a variety of PNP and NPN transistors on hand, such as the BC337 (NPN). Now, since it's 12V I know I can't drive it directly from the Arduino (mine is a Teensy 3.2 which uses 3.3V) and will need to use transistors. The one I have on hand happens to be common cathode, which I understand is unusual, however I had ordered a CC one because the tiny RGB that came with my starter/learner kit was CC and I didn't understand why one might be better than the other. I have a single 12V RGB LED that I'd like to control from 3 PWM pins. ![]() ![]() I just need more practice actually using them so I understand things better. I'm very much a beginner who embarrassingly still struggles to wrap his head around transistors.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |