Current Set Pin

124

00:55:00

Is this how the current set pin works? Eg max7219 to control the brightness of every led?

Anyone know how?  

published 2 years ago

592azy2circuitdude

2 years ago

I imagine it varies from IC to IC. Without a schematic, it's probably impossible to know for sure, but I think your setup would work. My guess is they employ some kind of current mirror/amplifier for precise control of LED current.

cjdelphi

2 years ago

Yeah how? Lol

592azy2circuitdude

2 years ago

Your guess is as good as mine 😄. I haven't built it, but here's what I had in mind: https://everycircuit.com/circuit/4997021429399552. What do you think?

cjdelphi

2 years ago

I think it's very similar this one

cjdelphi

2 years ago

Thanks for having a try... it's got to be something like this that's used 😀

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