RGB LED connections to NodeMCU ---> connect the negative of LED to ground and the other lines of LED to three digital pins ,say D1,D3,D5,of the NodeMCU.Similarly connect the other RGB LED to the ...
Project Overview This project involves using an ESP8266 microcontroller to read data from an LDR (Light Dependent Resistor) sensor, send the data to a ThingSpeak channel, and control an LED based on ...
The LDR acts as a variable resistor where the measured resistance value depends on the intensity of light applied to its photoconductive material. The lower the light intensity, the higher the ...
This musical light alarm circuit is very simple, uses only 7 components, a LDR and a 3.6 V battery or 3 x 1.2 volts rechargeable batteries. The well-known UM66 is used as the sound generator and will ...
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