Data Firmware

Fritzing parts of ESP8266 based WiFi module

Just find a GitHub provide Fritzing part for an ESP8266-based WiFi module.

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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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ESP 05 mini ESP8266 WiFi module

ESP-05 is a mini size WiFi module of ESP8266 family. Almost half size of ESP-01, no on-board antenna, with five-pin in SIL, more breadboard friendly.

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First test AT Command and check firmware:

To test ESP-05 with AT Command, we connect ESP-05 to PC via FTDI USB-to-Serial adapter, as shown:

(The Fritzing part of ESP8266-05 can be found HERE)

- Run Arduino IDE
- Select connected port
- Open Tools > Serial Monitor
- Select Booth NL & CR, 115200 baud
- Power on ESP-05
- Then you can enter AT command as show in this video:


To check the firmware, enter the command AT+GMR:

AT+GMR

AT version:0.40.0.0(Aug 8 2015 14:45:58)
SDK version:1.3.0
Ai-Thinker Technology Co.,Ltd.
Build:1.3.0.2 Sep 11 2015 11:48:04
OK

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Connect with Arduino Mega 2560 via Level Converter:


In this step, we are going to connect ESP-05 to Arduino Mega 2560, such that we can send command to ESP-05 by Mega. Because Mega is work on 5V, and ESP-05 work on 3.3V, so we need a Level Converter.

Connect as shown:


(Alternatively, you can simple use a voltage divider of 2 resistors to convert 5V Mega TX to 3.3V ESP-05 RX, ESP-05 TX can direct connect to Mega RX, to achieve the same job.)

Enter the code run on Mega. This program simple accept command from PC forward to ESP-05, receive response from ESP-05, forward to PC.

Mega_ESP05_test.ino

int LED = 13;
boolean LEDst = false;

void setup() {
 Serial.begin(115200);
 Serial3.begin(115200);
 pinMode(LED, OUTPUT);
 digitalWrite(LED, LEDst);
}

void loop() {
 while (Serial.available() > 0) {
 char a = Serial.read();
 Serial3.write(a);
 }
 
}

void serialEvent3() {
 while (Serial3.available() > 0) {
 char a = Serial3.read();
 Serial.write(a);
 ToggleLED();
 }
}

void ToggleLED(){
 digitalWrite(LED, LEDst = !LEDst);
}

Such that we can enter command as in "First test AT Command and check firmware" above. This step aim to make sure the connection between Mega and ESP-05 is correct.

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Example:
- ESP-05(ESP8266) + Arduino Mega, act as simple web server

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ALFA WiFi USB models Now support MAC 10 11 EI Capitan

ALFA WiFi USB models Now support MAC 10.11 EI Capitan 

Supported Model:
AWUS036NHR v2, AWUS036NHV, AWUS036EAC, AWUS036AC, AWUC036ACH, U24N,
Tube-UV, UBDo-UV
Download Link: Here

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