For turning on / off the scanner (car security accessory)
On 2015-01-13 13:56:39
Generally the scanner attached to the car security is blinking regardless of day and night. Even if it blinks brightly in the daytime, it is not noticeable, not to be seen. It also wastes the battery wastefully. So we came up with an idea to turn on / off the scanner operation according to the surrounding brightness. It's easy to wear between security and scanner. It seems that the illuminance threshold to be turned on and off seems to be set to a fairly bright condition, and the installation place of the main body seems to be the best on the dashboard. Even in the shade of cloudy we will recognize it as daytime if the sensor is hitting sky light (← not direct sunlight). If you want greedy, you can flexibly choose the installation location of the main body if it makes the threshold variable, so I appreciate it.