A neat fix for the HS21 parasitic drain problem

[jon_slider]

@Serlite

the IR sensors still had some parasitic drain, which got worse with brighter environments.

very well summarized,
here is the original post about it:

@koef3

The parasitic drain depends on the ambient brightness.

The current of 1.88 mA drops to 40 µA after some seconds, but only in a dark environment .

Anyway, if the light is stored in a brighter environment (1000 lx) the drain goes up to 0.33 mA, and in sunlight (over 100000 lx) it sometimes jumps over 1 mA. This is caused by the IR sensors. They induce a current which is generated by the ambient light.