OK, so here's my situation: I have an LED assembly that I want to drive using an 18V tool battery. In my testing, it seems that giving it a 7.5V-10V (at 10V it approaches 3A and 30W power) input range will give me the brightness range I want. Options I know I have:
So what is the best option? I don't mind spending a little bit of money, but it's not ideal if I don't have to.
EDIT: I have a bit of experience with making circuits, but I'd rather use something (mostly) complete. I also have experience with MCUs and Arduino IDE (which I find much preferable to using a 555 most of the time), so if there's a good/easy/cheap solution but it requires an MCU and some clever programming, that's an option to me.
- Adjustable buck converter (probably modified with a "fine adjustment" pot to only have range between 7.5 and 10V)
- Adjustable current driver (also probably modified to limit to about 3A output max)
- PWM driver with a high power resistor (wouldn't be my first time, and this might be the easiest option, but will also give the least consisntency)
- Find an LED driver online (I have looked on Banggood, AliExpress, eBay, and Amazon, haven't been able to find anything that looks like it'll work)
- Use some sort of LED driver IC which allows both voltage regulation and a dimming input
So what is the best option? I don't mind spending a little bit of money, but it's not ideal if I don't have to.
EDIT: I have a bit of experience with making circuits, but I'd rather use something (mostly) complete. I also have experience with MCUs and Arduino IDE (which I find much preferable to using a 555 most of the time), so if there's a good/easy/cheap solution but it requires an MCU and some clever programming, that's an option to me.
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