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 ...

The Arduino Uno is powered by the ATmega328P, an 8-bit microcontroller that runs at 16 MHz. It has 32 KB of flash memory, 2 KB of SRAM, and 1 KB of EEPROM. The board has 14 digital I/O pins (of which ...

You’re asking what is LDR? It stands for Light Dependent Resistor or Photoresistor, which is a passive electronic component, basically a resistor which has a resistance that varies depending of the ...

This is an IOT device with an LDR light sensor and a microcontroller with WIFI connectivity ESP8266/ESP32. Commercial household Energy meters have a LED on them which blinks/pulses according to the ...

暗いシンク下の戸棚や納戸の中にライトがあると便利ですよね。100円ショップ「ダイソー」で、ちょっとおもしろいギミックのライトを発見したのでご紹介します。 手のひらサイズのLEDライトとマグネットスイッチがコードで繋がった「LEDセンサーライト ...

Smoke detectors are generally used in advanced alarm systems. Most of this professional devices use gas-detectors, ionization rooms or radioactive elements as sensors. In this circuit we are not using ...