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arduino mega wifi r3 atmega2560 esp8266 usb ttl ch340g nodemcu

Descriere

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Specificatii

Full integration on one board: Mega R3 ATmega2560 and WiFi ESP8266 with memory    4 Mt bytes (32
 Mt bit    ) . All of the modules can work together or each separately. And everyone has their own pinout headers.
The convenient solution for the development of new projects requiring Uno and WiFi.
Via USB you can update sketches and firmvare for ATmega2560 and for ESP8266. For this on board have the USB-serial converter CH340G.
Use this board is very simple.
The board has DIP-switch, to connect the modules.
For example, to: USB and ATmeg2560, USB and ESP8266, ATmega2560 and ESP8266.
Table DIP- switch:
 

Connection

DIP

 

1

2

3

4

5

6

7

ATmega2560<->ESP8266

ON

ON

OFF

OFF

OFF

OFF

OFF

USB <->ATmega2560

OFF

OFF

ON

ON

OFF

OFF

OFF

USB<->ESP8266 (Update firmware or sketch)

OFF

OFF

OFF

OFF

ON

ON

ON

USB<->ESP8266 (communication)

OFF

OFF

OFF

OFF

ON

ON

OFF

All independent

OFF

OFF

OFF

OFF

OFF

OFF

OFF

 

Special solution:

USB <->ATmega328<-> ESP8266

 

DIP

SWITH 2

Connection

1

2

3

4

5

6

7

 

USB <-> ATmega2560<-> ESP8266

ON

ON

ON

ON

OFF

OFF

OFF

To RXD3/TXD3

  • ·         USB converter CH340G connect to RX0/TX0 of ATmega2560
  • ·         ESP8266 connect to RX3/TX3 of ATmega2560

  

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