These are the different colors you can see on your eVscope LED:
Red: the eVscope is ON and working well.
Blue and blinking: the eVscope is off and charging. It will blink from 6 times (fully discharged) to constant blue (fully charged)
Yellow and blinking: the eVscope is being updated.
Purple: the eVscope embedded software is turning ON or OFF.
Purple and blinking 5 times : eVscope is OFF and doesn't have enough charge to turn ON. You need to charge it
White: an error happened. You should reboot your eVscope.