Data Firmware

First look at the WeMos D1 Arduino compatible ESP8266 Wifi Board from Banggood com

This video take a look at the WeMos D1: a Wi-Fi enabled Arduino compatible board based on the ESP8266 chip. The price of it is so tempting, less than 9$.


The board looks like an ordinary Arduino board. The dimensions and the pin layouts are exactly the same. So, this board is compatible with all the existing shields for Arduino. But don’t expect them to work at once, since the libraries available for the ESP8266 chip are few so far. The board, instead of an ATMEGA chip that standard Arduino boards use, use the impressive ESP8266 WiFi chip!

The ESP8266EX chip that the WeMos D1 board uses offers:
• A 32 bit RISC CPU running at 80MHz
• 64Kb of instruction RAM and 96Kb of data RAM
• 4MB flash memory! Yes that’s correct, 4MB!
• Wi-Fi
• 16 GPIO pins
• I2C,SPI
• I2S
• 1 ADC

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CODE OF THE PROJECT
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http://educ8s.tv/arduino-esp8266-tutorial-first-look-at-the-wemos-d1-arduino-compatible-esp8266-wifi-board/

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ESP12E Motor Shield NodeMCU Motor Driver Expansion Board

Come with NodeMCU/ESP-12E and Motor Driver Expansion Board:

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info: http://nodemcu-motor.doit.am/ (Chinese)

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Blink NodeMCU on board LED using Arduino IDE with ESP8266 core for Arduino and more examples

To program NodeMCU in Arduino IDE, we have to install esp8266 board (ESP8266 core for Arduino) to Arduino IDE.

Add Additional Board Manager URL for ESP8266 board:
> File > Preference

Add "http://arduino.esp8266.com/stable/package_esp8266com_index.json" in Additional Board Manager URLs.


Add ESP8266 board to Arduino IDE:
- Open Boards Manager in Arduino IDE
- Search "esp8266" or "NodeMCU", you will find "esp8266 by ESP8266 Community". Install it.


Test:
Once esp8266 board installed, you can find an example to blink the on-board LED.
File > Examples > ESP8266 > Blink

/*
 ESP8266 Blink by Simon Peter
 Blink the blue LED on the ESP-01 module
 This example code is in the public domain
 
 The blue LED on the ESP-01 module is connected to GPIO1 
 (which is also the TXD pin; so we cannot use Serial.print() at the same time)
 
 Note that this sketch uses LED_BUILTIN to find the pin with the internal LED
*/

void setup() {
 pinMode(LED_BUILTIN, OUTPUT); // Initialize the LED_BUILTIN pin as an output
}

// the loop function runs over and over again forever
void loop() {
 digitalWrite(LED_BUILTIN, LOW); // Turn the LED on (Note that LOW is the voltage level
 // but actually the LED is on; this is because 
 // it is acive low on the ESP-01)
 delay(1000); // Wait for a second
 digitalWrite(LED_BUILTIN, HIGH); // Turn the LED off by making the voltage HIGH
 delay(2000); // Wait for two seconds (to demonstrate the active low LED)
}

You can upload it to NodeMCU, to toggle the on-board LED.


notice:
- Once the ModeMCU programmed, the original firmware will be erased. To restore the original firmware with Lua shell, you have to flash the firmware again.

Next:
- Read NodeMCU MAC address using Arduino IDE with esp8266 library
- Get my IP address
- Run diagnosis
- NodeMCU to read analog input, A0
- NodeMCU act as WiFi client to update dweet.io
- Display on 128x64 I2C OLED, using Adafruit SSD1306 and GFX libraries
- esp8266-OLED, another esp8266-Arduino library for I2C-OLED displays
- NodeMCU/ESP8266 act as AP (Access Point) and simplest Web Server
- NodeMCU/ESP8266 act as AP (Access Point) and web server to control GPIO
- NodeMCU/ESP8266 implement WebSocketsServer to control RGB LED
- NodeMCU/ESP8266 WebSocketsServer, load html from separate file in flash file system

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