A self-propelled electronic device for use on a base surface, the electronic device comprising: • a chassis disposed, in use, over the base surface, the chassis having a first surface facing the base surface when the chassis is disposed over the base surface; • a light meter coupled to the chassis and configured to: - detect light incident toward the first surface; and - determine a luminance level of the detected light, • a line sensor coupled to the chassis and configured to sense a line segment on the base surface; and • a movement mechanism coupled to the chassis and placeable on the base surface, the movement mechanism being in operative communication with the line sensor to move on the base surface in a pattern corresponding to the line sensed on the base surface, the self-propelled electronic device being characterized by comprising: • a light source coupled to the chassis and configured to selectively transition between an ON state to emit light away from the first surface and an OFF state to not emit any light; and • a control unit coupled to the chassis and in operative communication with the light meter and the light source, the control unit being configured to transition the light source to the ON state in response to the luminance level of the detected light being below a threshold luminance and to the OFF state in response to the luminance level of the detected light being above the threshold luminance. • a chassis disposed, in use, over the base surface, the chassis having a first surface facing the base surface when the chassis is disposed over the base surface; • a light meter coupled to the chassis and configured to: - detect light incident toward the first surface; and - determine a luminance level of the detected light, - detect light incident toward the first surface; and - determine a luminance level of the detected light, • a line sensor coupled to the chassis and configured to sense a line segment on the base surface; and • a movement mechanism coupled to the chassis and placeable on the base surface, the movement mechanism being in operative communication with the line sensor to move on the base surface in a pattern corresponding to the line sensed on the base surface, the self-propelled electronic device being characterized by comprising: • a light source coupled to the chassis and configured to selectively transition between an ON state to emit light away from the first surface and an OFF state to not emit any light; and • a control unit coupled to the chassis and in operative communication with the light meter and the light source, the control unit being configured to transition the light source to the ON state in response to the luminance level of the detected light being below a threshold luminance and to the OFF state in response to the luminance level of the detected light being above the threshold luminance. • a light source coupled to the chassis and configured to selectively transition between an ON state to emit light away from the first surface and an OFF state to not emit any light; and • a control unit coupled to the chassis and in operative communication with the light meter and the light source, the control unit being configured to transition the light source to the ON state in response to the luminance level of the detected light being below a threshold luminance and to the OFF state in response to the luminance level of the detected light being above the threshold luminance.