Tag Archives: photon

Seg 1: How to use Arduino make a controllable LED light?

7.1 Problem: How to use Arduino make a controllable LED light?

In this experiment, we will use an Arduino board to make a controllable LED light, which let LED light bright and/or dark by the strength of light. This experiment is very usable. For example, when night is coming, we should let the street lamp light, and the lamp should be dark in the daytime for the energy saving. So, with respect to this experiment, we can make a light controllable lamp in our home. Similarly, we can also make voice controllable LED light.

7.2 The required materials

The required materials are also very simple in this example. On the basis of experiment, we just use photoresistor to replace the nixie tube, which are shown in Table 7-1.

The required materials


Name Quality Function Note


Arduino software 1 suit Provide ide New ver 1.05


Arduino UNO board 1 Control board Many


USB data line 1 Connect board distribution


Dupont line 2 Connect elements optional


Photoresistor 1 control optional


Bread board Connection optional