Re: Shack clock contrast adjustment


Answered my own question!! That comment was for display brightness. 

The contrast pot R1 is 100k so any value of R4 that reduces its effective travel is helpful in making the pot easier to adjust but the same policy can be applied, i.e starting at 100-Kohms. 180-Kohms should work well. 220-Kohms or 270-ohms may also suit your taste. 

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