color-sensor-LDR Colour Sensor that is LDR (light dependent resistor) based and identify three primary colours Red, Green, Blue.

As you probably know the LDR is a light dependent resistor. Normally the resistance of an LDR is very high, sometimes as high as 1MΩ, but when they are illuminated with light resistance drops ...

Circuit of a compact and true solid-state automatic lawn light is described here. The circuit can be used to switch on incandescent garden light bulbs at desk and switch off them at dawn. A 10 mm ...

His tiny circuit switches the lights between the two power settings. His plan was to install the device without disturbing the original wiring or light switch assembly in any way.

About This project integrates an ESP32 with an LDR (Light Dependent Resistor) sensor to measure light intensity and publish the data to an MQTT broker. The data is then processed and visualized in ...

High demand of electrical power receives challenging feedback due to the lack of natural resources and high impact of the global warming. This paper describes one applicable method to optimize the ...

This is a small and light weight IOT device which is stuck/glued on to the Energy meter with LDR sensor facing on to the energy meters LED. ESP8266/ESP32 keeps track of the pulse count and sends the ...