A TCS3200 color sensor is a much better choice, and you can buy a nice assemble module for about $2 from our friends in Shenzhen. And before you say the point here is DIY, DIY doesn’t mean 20 ...

Majorly, this sensor is used in highways, parks, farms, airports, gardens, and factories. The packaging includes one photocell sensor with a switch. Sisah Auto Day/Night On/Off Photocell Sensor Switch ...