Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

This project uses ESP8266 and ESP32 to read values from two LDR sensors and upload them to Firebase. The values are also displayed on the Serial Monitor. Additionally, an Android app is provided to ...

General purpose circuit of the simple pressure sensor alarm is built around a couple of readily available cheap components. Working of this circuit is straight forward and self-explanatory. When the ...

This project presents a light-responsive power-saving system designed using Arduino and basic electronic components. The system starts in an active state (system LED ON). When ambient light is low, ...