FemtoBuck LED Driver

Components & Accessories LEDs
1

Will the FemtoBuck LED Driver work with standard LED’s of various colors with a forward voltage of 1.8 - 3.6 or is it meant soley for higher wattage LED’s ?

Im trying to build a RC Helicopter landing pad for night flights. My arrays will contain up to 35 LED’s. I have watched many Youtube videos on LED “Breathing” circuits but none of them show more than 3 LED’s being driven. Does Sparkfun have any products that can make multiple LED’s breath/pulse?

I have on hand hundreds of LED’s, hundreds of resistors, Capacitors, many NE555 Timers and BC transistors of varying values.

I can read a schematic (somewhat) but lack the knowlege of designing a circuit. I wish to keep it super simple so this caveman can understand it.

I have built on a breadboard, a 34 LED array using both parallel & series conections and it works flawless, I just need it to breath.

Any thoughts?

My power source can be anywhere between 3.7 to 14.8v

2

Made for high wattage LEDs only and will destroy regular LEDs.

3

Femtobuck is basically for high-wattage aluminium PCB LEDs. The minimum input voltage for this board is 6V. Standard size 5mm LEDs are not compatible with this.

I understand that you have to accommodate a huge number of LEDs, resistors, ICs etc. I think, making an LED PCB will make your setup easier.

https://www.theengineeringprojects.com/ … d-pcb.html

4

Thanx all for the info. Indeed, a PCB will be the way to go after I get a schrmatic on how to lay it out. I can make the breathing circuit but I cant get it to run 20 LED’s. I have no formal education in electronics, only a deep desire to learn. I read, I watch, then I try to apply…most of the time I run into a roadblock that leaves me stranded. Shame on me for not going to school.

5

Have you tried this LED breathing circuit for 20 LEDs? https://youtu.be/Q9IjA512kqw