What is Ohm's law?

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LEDs control using nodemcu and ir remote.

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NODE MCU HOME AUTOMATION.

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  #include <IRrecv.h> #define BLYNK_PRINT Serial #include <ESP8266WiFi.h> #include <BlynkSimpleEsp8266.h> uint16_t RECV_PIN = D6; IRrecv irrecv(RECV_PIN); decode_results results; int LED1 = D0;  int LED2 = D1;  int LED3 = D2;  int LED4 = D3;  int LED5 = D4;  int LED6 = D5;    int swval[] = {0,0,0,0,0,0,0}; char auth[] = "Aoth token"; // Your WiFi credentials. // Set password to "" for open networks. char ssid[] = "ssid"; char pass[] = "passward"; void setup() {  Serial.begin(9600);   Blynk.begin(auth, ssid, pass);     irrecv.enableIRIn();  // Start the receiver   pinMode(LED1, OUTPUT);   pinMode(LED2, OUTPUT);   pinMode(LED3, OUTPUT);   pinMode(LED4, OUTPUT);    pinMode(LED5, OUTPUT);   pinMode(LED6, OUTPUT);       digitalWrite(LED1, LOW);   digitalWrite(LED2, LOW);   digitalWrite(LED3, LOW);   digitalWrite(LED4, LOW);   digitalWrite(LED5, LOW);   digitalWrite(LED6, LOW);   } void relayswitch(int i,int j){   if(swval[j]==1){    
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