Week 1: ESP8266

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        ## ESP8266 Wifi  Board 
        
        By: Eslam Adel 
        
        email: eslam.a.mahmoud@eng1.cu.edu.eg
        
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## Overview of HUZZAH ESP8266
        
        <img src="../../images/esp.jpg" width="100%">
        
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## Power Pins
        
        ![](../../images/pwr.jpg)
        
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## Serial Pins
        
        ![](../../images/serial.jpg)
       
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## GPIO Pins
       
        9 GPIO Digital pins
        
        ![](../../images/gpio.jpg)
       
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## Analog Pins
        
        Only one analog pin A has a maximum 1.0V. 
       
        ![](../../images/analog.jpg)
        
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## Other Pins
            
        * **LDO** for voltage regulation (enabled by default)

* **RST** reset pin
             
        * **EN** for enabling esp (enabled by default)

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        ## Connect USB-Serial cable
       
        ![](../../images/cable.jpg)
        
        ---
        
        ## Installing esp Board package 
        
        * add this URL http://arduino.esp8266.com/stable/package_esp8266com_index.json
         at **File > Preferences** additional board URl

* From **Tools > Board > Boards Manager** install the ESP8266 package.

* For Windows install [adafruit drivers](https://learn.adafruit.com/adafruit-arduino-ide-setup/windows-driver-installation)
        
        * Select Adafruit Feather HUZZAH ESP8266 board and its serial port. 
        
        ---

## Blink test Example
        
        ```c
        int ledPin = 0; // LED connected to digital pin 13
        
        // The setup() method runs once, when the sketch starts
        void setup()
        {
        pinMode(ledPin, OUTPUT); // initialize the digital pin as an output
        }
        // the loop() method runs over and over again,
        void loop()
        {
        digitalWrite(ledPin, HIGH); // turn the LED on
        delay(1000); // wait a second
        digitalWrite(ledPin, LOW); // turn the LED off
        delay(1000); // wait a second
        }
        ```
        ---

## Uploading code
        
        * Make the board in upload mode 
            
            * Hold on GPIO button 
            
            * Click reset button
        ---

## Documentation 
        
        Documentation for all available libraries, classes, functions in  [ESP8266 Arduino Core’s documentation](https://arduino-esp8266.readthedocs.io/en/latest/index.html)
        
        <img src="../../images/doc.png" width="80%">

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## Sample Examples

* ESP8266WiFi library examples show how to configure esp to work as
            
            * Host or Client
            * Access point
            * Server
            * etc
        
        ---

## Task 1 
        
        Requirements : 
    
        1. Acquire an analog signal from two different sensors. 
        
        2. Make a web server on ESP to upload sensor readings

3. Desktop and mobile app applications

* Retrieve readings from the server

* Plot the real time signals
        
        ---

## Acquiring signal

* ESP has only one analog pin.
            
            * Connect ESP with Arduino.
        
            * Analog Multiplexer.
                
                * 744051 8-Channel Analog Multiplexer / Demultiplexer
        
        ---

## Submission Criteria

1. Groups list (max 3 per group) **Tomorrow** 
        
        2. Submission without penalty **Monday, Tuesday**

3. Submission with 80% **Wednesday, Thursday**

4. After that you missed submission.
        
        ---

## Useful links
        
        * [Adafruit HUZZAH ESP8266](https://learn.adafruit.com/adafruit-huzzah-esp8266-breakout/overview)
        
        * [Windows Driver Installation](https://learn.adafruit.com/adafruit-arduino-ide-setup/windows-driver-installation)
        
        * [How To Program An ESP8266 With the Arduino IDE (Video Tutorial)](https://www.youtube.com/watch?v=AFUAMVFzpWw)
        
        * [Use multiple analog sensors on an ESP8266 (Video Tutorial)](https://www.youtube.com/watch?v=S5zp_S3vo1Y)
        
        * [ 744051 8-Channel Analog Multiplexer / Demultiplexer RAM electronics](http://ram-e-shop.com/oscmax/catalog/product_info.php?products_id=122)
        
        * [ESP8266 Arduino Core’s documentation](https://arduino-esp8266.readthedocs.io/en/latest/index.html)