hey guys, i'm curious if you might have different methods of creating a flashing led. Like you see in cars.
My plan is to make a flashing led. One that i can easily set a delay with. Then i would like to attach a capacitor to it and make it fade in and out, instead of turning on and off. Unless you guys know a method without using a cap?
Thanks 🙂
My plan is to make a flashing led. One that i can easily set a delay with. Then i would like to attach a capacitor to it and make it fade in and out, instead of turning on and off. Unless you guys know a method without using a cap?
Thanks 🙂
ok well you can buy flashing led's but they wont fade in and out ... you could use a 2 transistor oscillator with the cap and led ... that circuit would achieve all of your objectives and is probably the simplest available for the task.
If you want a very very very simple flashing led, you buy a Pink Floyd Pulse CD (vinyl doesn't have it) and U get one for free😀
PedroPO said:If you want a very very very simple flashing led, you buy a Pink Floyd Pulse CD (vinyl doesn't have it) and U get one for free😀
haha i thought about doing something like that. 🙂
But then i found something similar lying around my place.
basically it's a chip covered in a black coating. then theres a tiny resistor, and a diode, and 2 transistors. I wanted to modify it to change the flash time and also add a cap to make it fade in and out..... but... I have no idea how it works. 🙁 damn!
Though I am looking for the simplest circuit available... hehe
Thanks for the information coming in, i'm looking into it. 🙂
keep emm coming if anyone has more ideas 🙂
AudioFreak said:ok well you can buy flashing led's but they wont fade in and out ... you could use a 2 transistor oscillator with the cap and led ... that circuit would achieve all of your objectives and is probably the simplest available for the task.
hmm... i hate to sound like an electronics newbie... 🙂
which i unfortunatly am...
a 2 transistor oscillator, what would be the part number for that, or how would i know what piece i'm looking for? I know oscillators from ..... uhm... fm radios, they have oscillators which turn to tune frequencies ( if i remember correctly ). Would you have a sample circuit handy? It does sound like a simple circuit.
Thanks 🙂
It's the circuit above the flashing bug eyes circuit in the link that NU_NRG posted ... use the flashing bug eyes circuit instead.
AudioFreak said:It's the circuit above the flashing bug eyes circuit in the link that NU_NRG posted ... use the flashing bug eyes circuit instead.
oh ok cool 🙂
I'm actually going to give that a shot.
Thanks 🙂
Re: sigh..
hehe actually i checked out the link you posted and thought it was good. 🙂 I was hoping for more feedback so i hadn't responded right away. 🙂
But yeah, actually overall the page itself has a bunch of good infomation.
NU_NRG said:nobody listen to when I talk...
🙂
hehe actually i checked out the link you posted and thought it was good. 🙂 I was hoping for more feedback so i hadn't responded right away. 🙂
But yeah, actually overall the page itself has a bunch of good infomation.
thnx... you made my day 😉
if you need any more info feel free to ask!
we'll probly answer
-Simon
if you need any more info feel free to ask!
we'll probly answer
-Simon
NU_NRG said:thnx... you made my day 😉
if you need any more info feel free to ask!
we'll probly answer
-Simon
hey cool, i'm also from quebec...
well more spcifically montreal suburbs... 🙂
NU_NRG said:WEll thats great, so am I!
I live in Terrebonne
bout'u?
hehe cool, i live in sthubert
a 555 timer makes a very simple oscillator. You can download the datasheet at national.com, and it has example circuits and explains how the chip works. I don't see why you couldn't put a cap in series with it to ramp up/down.
SteveG said:a 555 timer makes a very simple oscillator. You can download the datasheet at national.com, and it has example circuits and explains how the chip works. I don't see why you couldn't put a cap in series with it to ramp up/down.
hmmm that's one area i'm not good at... chips... i would love to use a 555 timer since it's made for this... perfect for my project...
i will take a look at the 555 info on national.com.
thanks 🙂
PedroPO said:If you want a very very very simple flashing led, you buy a Pink Floyd Pulse CD (vinyl doesn't have it) and U get one for free😀
The circuit is quite classical, it's the LM3909 from NS. I recommend this, it's extremly power ....(?) (snål in swedish). One AA cell lasts 9 months!
http://www.national.com/pf/LM/LM3909.html
- Status
- Not open for further replies.
- Home
- Design & Build
- Parts
- how? --> making a flashing led