Make with Karkhana

This video will illustrate to you how to make a simple piano by using IR Modules. Based on the frequency of sa, re, ga, ma, pa, dha, ni and sa the tone of the buzzer will change. Video Link Components Required: 1> I.R. Modules 2> Arduino Uno 3> Jumper Wires 4>Small Breadboard Circuit Diagram Arduino Code: int button_C = 2; int button_D = 3; int button_E = 4; int button_F = 5; int button_G = 6; int button_A = 7; int button_B = 8; int button_Cup = 9; int speaker = 10; int buttonstate_C = 0; int buttonstate_D = 0; int buttonstate_E = 0; int buttonstate_F = 0; int buttonstate_G = 0; int buttonstate_A = 0; int buttonstate_B = 0; int buttonstate_Cup = 0; //NOTES         'c'  , 'd',  'e',  'f',  'g', 'a',  'b',  'C' int tones[] = { 240, 254, 285, 320, 359, 280, 427, 956 }; //freq int Cur_tone = 0; void setup() {   pinMode(button_C, OUTPUT);   pinMode(button_D, INPUT);   pinMode(button_E, INP

This tutorial is about the clicking photos and recording videos using "Logitech Webcam C110 with Raspberry Pi 3 Model B" Component Required: Rasberry Pi 3 Model B  Logitech Webcam C110  Adapter Charger micro USB-b Type 5v,2Amp  Connection Diagram: Step 1: Create a new folder First, we create a new folder just to store your photo and videos separately. Open the terminal. Command for creating new folder is "mkdir folder name" Step 2: Check everything is up-to-date To update your Raspberry Pi command is " sudo apt-get update ". And to upgrade your Raspberry Pi command is " sudo apt-get upgrade". Step 3: Check SSH and Camera enabled To make sure SSH and Camera enabled. Follow these two-steps. By this command, you can configure your SSH and Camera " sudo raspi-config ". Enable SSH. Enable Camera. Step 4: Check connection of Camera Make sure the camera is connected. Then run this command to make sure

Hey folks In this tutorial, we will learn how to interface LM393 module(Soil Moisture Sensor)with NodeMcu(ESP8266). LM393 is a simple water sensor can be used to detect soil moisture when the soil moisture deficit module plant waterer device, so that the plants in our garden without people to manage; Adjustable sensitivity adjust the digital potentiometer (shown in blue) Operating Voltage 3.3V-5V; Module Dual Output mode, a simple. LM393 Soli Moisture Sensor Module(over view)  Components Required: LM393 Soil Sensor  NodeMcu(ESP8266)  Connecting wires(male to male)  Breadboard  Follow the Image below for circuit connection reference:- (Interfacing all components)  Here Pin A0 of the moisture sensor module connects to pin A0 on the ESP8266 The GND pin on the moisture sensor module connects to a GND pin on the ESP8266 The VCC pin on the moisture sensor module connects to a 3v3 pin on the ESP8266 D0 pin remain disconnected After making the circuit dump the code given

Hey folks,  In this tutorial we will learn how to interface Servo motor with NodeMcu(ESP8266)module and operate it with the Blynk app.  Servos  are controlled by sending an electrical pulse of variable width, or pulse width modulation (PWM), through the control wire. There is a minimum pulse, a maximum pulse, and a repetition rate. A  servo motor  can usually only turn 90° in either direction for a total of 180° movement. servo Motor (Back view)  Servo Motor (front view) Blynk  is a Platform with iOS and Android  apps  to control Arduino, Raspberry Pi and the likes over the Internet. It's a digital dashboard where you can build a graphic interface for your project by simply dragging and dropping widgets. (Blynk App) Components Required: Servo motor NodeMcu(ESP8266) Connecting wires(male to male) Breadboard    Follow the image below for circuit connection reference. (Servo Motor connecting with NodeMcu) In this circuit, we have connect

In this tutorial, we will learn how to interface DC Motor with NodeMcu by using Relay Module controlling with Alexa echo. with voice API. A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields. SmallDC motors are used in tools, toys, and appliances. DC Motor (Overview)  There are 4 main types of DC motors: Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux. Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. Shunt DC Motors. Compound DC Motors. So now we are familiar with the motor let us interface it. Components Required: DC motor NodeMcu(ESP8266) Alexa echo. Connecting wires(male to male) Breadboard Relay Module Follow the Image below for circuit connection reference:- (Interfacing all

Hey Folks, In this tutorial, we will learn, how to interface DHT 11 with Node Mcu(ESP8266 ).   The  DHT11  is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analog input pins needed). DHT11 Back Side DHT11-Internal Sensor Components Required NodeMcu(ESP8266)  DHT 11 SENSOR  Few male to female connecting wires  Breadboard Follow the image below for circuit connection reference. DHT11 Sensor connection with NodeMCU(WiFi-Module) In this circuit, we have connected the output pin to the D3 pin of the NodeMcu module and NC pin remain disconnected. After making the circuit dump the code given below. // Karkhana Report // temperature and humidity data using thingspeak.com // Hardware: NodeMCU,DHT11 #include <DHT.h> // Including library for dht #include <ESP8266WiFi.h> String apiKey = "TH