| Electronics > Beginners |
| Sequential tail lights |
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| drussell:
--- Quote from: tpowell1830 on September 23, 2018, 07:35:31 pm ---Hi Rob, do a search for LM3914 - LM3915 - LM3916 on YT, which might suit your use. This is the first one I found in search. --- End quote --- A bargraph isn't really what the OP is looking for. I believe the OP is looking for a simple sequential blinky light, like a counter and a 138 or 154 decoder. Try looking up projects with 74LS161, 163, 138, 154, etc. (or HC, or whatever rather than LS) Edit: This isn't what you want. See below. :) |
| tpowell1830:
--- Quote from: drussell on September 23, 2018, 08:05:01 pm --- --- Quote from: tpowell1830 on September 23, 2018, 07:35:31 pm ---Hi Rob, do a search for LM3914 - LM3915 - LM3916 on YT, which might suit your use. This is the first one I found in search. --- End quote --- A bargraph isn't really what the OP is looking for. I believe the OP is looking for a simple sequential blinky light, like a counter and a 138 or 154 decoder. Try looking up projects with 74LS161, 163, 138, 154, etc. (or HC, or whatever rather than LS) --- End quote --- No, the OP is looking for sequential tail lights with a later reference to the fact that he is not learned in electronics and wants to know more. IMO, it is very unclear as to what the OP wants. My solution might be what is desired and your solution may work as well. |
| drussell:
--- Quote from: tpowell1830 on September 23, 2018, 08:23:53 pm ---No, the OP is looking for sequential tail lights with a later reference to the fact that he is not learned in electronics and wants to know more. IMO, it is very unclear as to what the OP wants. My solution might be what is desired and your solution may work as well. --- End quote --- Ah, you're right since the OP wants the lower "bits" to stay on, I'm sure... that makes it a trickier counting job and a 138/154 isn't the output arrangement we want... would actually need to see the bits or use shift registers or whatever. I wasn't thinking that through. An LM3914 with a simple ramped-up voltage is just what the doctor ordered. A string of compartors would work in a pinch also, of course, since we don't need the dot mode or any fancy features but a LM3914 is a much easier to wire, simpler solution. Good call! |
| james_s:
Beginners are more than welcome here, however this forum is aimed toward people who want to learn about the inner workings, it's probably not the best place to look for an off the shelf ready to go solution. If you're looking for ideas and willing to take some time to learn then you'll find lots of help here. Otherwise you might be better off looking for suggestions for a ready to go product from a car forum. |
| tpowell1830:
--- Quote from: james_s on September 23, 2018, 09:24:38 pm ---Beginners are more than welcome here, however this forum is aimed toward people who want to learn about the inner workings, it's probably not the best place to look for an off the shelf ready to go solution. If you're looking for ideas and willing to take some time to learn then you'll find lots of help here. Otherwise you might be better off looking for suggestions for a ready to go product from a car forum. --- End quote --- For someone who is an absolute newbie to electronics, the solutions that drussell and I suggested probably can't be done by a complete newbie, nor would a newbie even understand what we are implying. As seasoned hobbyists or EEs we know at a glance how these suggestions would work. I am waiting for the right response from the OP to see if there is interest in the art or interest in only making LEDs blink. :popcorn: EDIT: And BINGO! We have winner, a newbie who just wants to blink some LEDs. Below... |
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