Go to advanced search

by barny
Tue Nov 08, 2016 2:54 pm
Forum: Astro Pi
Topic: Sense HAT RGB values limitation?
Replies: 7
Views: 4928

Re: Sense HAT RGB values limitation?

I wonder it if might be possible to get better colour resolution by pulse-width modulating the LED drivers. Just thinking about getting better than 16-bit colour rendition, let's guess the current scan rate is 80Hz, each column is active for 12.5ms, and the current drivers can modulate the LED brigh...
by barny
Tue Nov 08, 2016 11:36 am
Forum: Astro Pi
Topic: Sense HAT RGB values limitation?
Replies: 7
Views: 4928

Re: Sense HAT RGB values limitation?

The RGB values displayed by the SH are in the range 0-255 so as you are only using 0-63 you aren't displaying the full brightness range in your code, so that is the reason so few LEDs light up with the default gamma. This code below uses range 0-255 and toggles between (numerically) 'linear' gamma a...

Go to advanced search