this post was submitted on 12 Feb 2025
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[–] [email protected] 2 points 1 week ago* (last edited 1 week ago)

Cheaper components and manufacture to use a dedicated microcontroller to run PWM to dim the LEDs than something like a 555 and transistors to change its logic/capacitor path to vary brightness.

They even may use the same micro for charging lipo batteries, not sure since there are dirt cheap chips for that too.

The fact that people have bothered to modify such basic firmware is pretty funny though.