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WEMOS Mega2560 WiFi R3 ATmega2560 ESP8266 32Mb memory USB-TTL CH340G
MYR62.80
Features:
Full integration on one board: Mega R3 ATmega2560 and WiFi ESP8266 with memory 32Mb (megabyte)
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 firmware 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
| DIP switch table: | ||||||||
| 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 | ||||||||
WEMOS MEGA2560 USER GUIDE:
https://drive.google.com/file/d/13kriNzA3qGC7xSA780lhahtP3Un2-69X/view?usp=sharing
CH340 DRIVER:
http://www.wch-ic.com/downloads/CH341SER_EXE.html
B11-MEGAWIFI2560