K8064 "steps"

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1

I have a couple of K8064 dimmers which I control from a simple voltage source.
I’ve noticed that I get “steps” on the controlled lights, maybe 10 or 12 steps when I sweep from 0% to 100% on the source.
This is visible regardless of sweep time and load on the dimmer.

At first I tried to hook a capacitor to the CV input to smooth it out a bit but that was not the problem. Atleast the stepping was just as visible as before. The problem seems to sit in the PIC but I could be wrong.

My questions:
How many discreet steps are adressable in the PIC? All 99 steps from 0% to 98%?
Can I safely hook a smoothening cap, say 10uF, between R5/TR1 and ground to get a smother response when I control the output?

I have some respect for 230V so that’s why I ask :slight_smile:

best regards, Per

2

The K8064 has 255 brightness levels. (different triac trigger points)
Normally only at verry low level you can “see” these steps, you can’t modify this by adding components.