hey Guys,
first, apologies for once again drawing on the vast and deep knowledge contained on AAC to solve....... A FADING LED!!! .... your favorite past time im sure
So, ive had a good play with a 9v 555 circuit and ive read through bill's blog (http://forum.allaboutcircuits.com/threads/leds-555s-flashers-and-light-chasers.19075/#post-117641) which has given me some good starting points as to where to take this next, but i was hoping for a friendly shove in the right direction!
I need to make a battery powered fading LED that all included fits within a circle about 50mm in diameter with as small as possible height.
my thoughts on options:
do you guys have any advice as to which avenues are going to be the best for achieving as small as possible circuit? Or am i chasing ghosts?
i should be getting a few circuit simulations going in a few hours once im back from work.
Rob
first, apologies for once again drawing on the vast and deep knowledge contained on AAC to solve....... A FADING LED!!! .... your favorite past time im sure
So, ive had a good play with a 9v 555 circuit and ive read through bill's blog (http://forum.allaboutcircuits.com/threads/leds-555s-flashers-and-light-chasers.19075/#post-117641) which has given me some good starting points as to where to take this next, but i was hoping for a friendly shove in the right direction!
I need to make a battery powered fading LED that all included fits within a circle about 50mm in diameter with as small as possible height.
my thoughts on options:
- To use something like the 7555 as detailed in bill's blog to create a PWM connected to the fade RCnetwork?
- to use a 'joule thief' to boost the battery - thinking a coin cell is going to be the only viable option for my size issues? so 1.5-3.3v at best?
- or by this point is some sort of microcontroller going to be viable? i have some experience with arduinos, which i am sure i could transfer over to other microcontrollers; as the arduino mini pro (smallest form factor arduino i believe) is still a little large/overkill/costly for what i want?
do you guys have any advice as to which avenues are going to be the best for achieving as small as possible circuit? Or am i chasing ghosts?
i should be getting a few circuit simulations going in a few hours once im back from work.
Rob