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Ideally of individual pixels.
I was just reading your excellent page about PWM, calling the microbit.show() function with this technique should do the trick, but probably only for the whole screen/whole images, right?
PS: Espruino is by far the best firmware for the micro:bit, a high-level language AND full BTLE stack!!!
Frenchfaso
@Gordon
I don't believe so, no - not without some firmware changes. Did you want to change the brightness of individual pixels, or the whole screen?