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Full integration on one board: Mega R3 ATmega2560 and WiFi ESP8266 with memory 32Mb (megabit). All of the modules can work together or 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 firmware for ATmega2560 and for ESP8266. For this onboard have the USB-serial converter CH340G.
Using this board is very simple.
The board has DIP switches, to connect the modules.
For example, 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 connects to RX0/TX0 of ATmega2560
- ESP8266 connects to RX3/TX3 of ATmega2560
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