YourITronics

This application explains how to make a light detector for ARobot. This can be used to tell when a light is on or off, whether the robot is inside or outside, or for light following. This is a simple expansion and does not require soldering if using a breadboard.

It does assume that you have attached a breadboard and an expansion cable to the ARobot . This circuit and the light sensor could be mounted and soldered to a perf board and located to a movable head. Multiple light detector sensors could be used to detect the direction of light.

Light Detector Application: [Link]

The goal of this project was to build a normal dimming lamp that is also controlled wireless with a tv remote control. When you switch the power on there will follow a soft-start till the lamp burns at the previously adjusted dim level. With the P+ and P- button from a system at choice you can adjust the maximum and minimum dim-levels and with the ‘1′ button the start-up brightness. The next time when the 230V power is switched on the lamp starts up at the adjusted dim-level.

Wireless Controlled Lightdimmer Using TV Remote Control: [Link]