On which platform in particular?
On Bangle.js it's just not possible as it is unable to read back pixels that have been written to the display.
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
On which platform in particular?
On Bangle.js it's just not possible as it is unable to read back pixels that have been written to the display.