Arduino and ESP8266 Projects

Material to get started: ESP8266 12e NodeMCU manufactured by Lolin (Check the datasheet, if you are using a different version.) Fig. 2: ESP8266 12e by Lolin USB Type C cable to program ESP8266 12e from a laptop or PC. Most Android phones use this type of cable. Fig. 3: USB Type C Cable Relay Module – Relay is an electro-mechanical switching device. In a relay, we can control switching AC or DC appliances digitally by providing input to relay input pins. Here we have used a 1-channel relay operating on 5 Volts. Fig. 4: 1 Channel Relay Module To connect your AC appliance, use the following connection with the Relay Module use the following connection. The Signal pin is IN. Fig. 5: Relay Connection With some wires and breadboard. Back End Set-up : Set-up with Facebook Messenger: We need a Virtual human to chat with. For this, we will create a Facebook Page. Fig. 6: Create a Facebook Page To create a Facebook Page, click  here  and Get Started with...

This project was developed with the intention of replacing the traditional button key. It can be used along with a microcontroller or an arduino. When a capacitive load (such as a human hand) is in close proximity to the sense-pad or touches it, the sensor detects the change in capacitance and activates the switch. Code: #define  ctsPin 2  int ledPin = 13; void setup() {    Serial.begin(9600);   pinMode(ledPin, OUTPUT);   pinMode(ctsPin, INPUT); }   void loop() {   int ctsValue = digitalRead(ctsPin);   if (ctsValue == HIGH) {      digitalWrite(ledPin, HIGH);      Serial.println("TOUCHED");   }    else {      digitalWrite(ledPin,LOW);     Serial.println("not touched");   }   ...