WiFi R3 ATmega2560 ESP8266 USB-TTL Board CO...

DescriptionThe WiFi R3 ATmega2560 ESP8266 USB-TTL Board is a powerhouse for makers in Rwanda who need maximum I/O pins combined with wireless capability. Instead of stacking a Wi-Fi shield on top of a bulky Mega 2560, this board builds both the ATmega2560 and the ESP8266 chips directly onto one compact PCB. This “Mega WiFi” hybrid is perfect for complex home automation systems, robotic controls, and data logging servers.Two Chips, One BoardThe genius of the WiFi R3 ATmega2560 lies in its flexibility. It gives you the full 54 digital I/O pins and 16 analog inputs of the standard Mega 2560, plus the Wi-Fi power of the ESP8266 (ESP-12E/F style).Memory Upgrade: Unlike standard ESP modules with 4Mb or 8Mb, this board often features 32Mb (megabits) of flash memory on the ESP8266 side, allowing for larger file storage and complex web pages.USB Driver: It uses the reliable CH340G USB-to-TTL converter to handle communication between your computer and the chips.SpecificationsProductWIfi NodeMCUMicrocontrollerATmega2560IC Wi-FiESP8266USB TTL ConverterCH340GPower Input5V (500mA)Power input MAX9-24VUSBMIcro USBClock Frequencty16MHzDigital I/O Pins54Analog I/O Pins16memory Size256KBRAM8KBROM4KBInterface TypeSerialIOTAOperating Temperature-40 To 120Mastering the DIP SwitchesUsing the WiFi R3 ATmega2560 requires understanding the onboard 8-position DIP switch. These switches determine which chip you are “talking” to via USB or how the chips talk to each other.Program Mega 2560: Turn switches 3 and 4 ON. (Connects USB to ATmega2560).Program ESP8266: Turn switches 5, 6, and 7 ON. (Connects USB to ESP8266).Mega ESP Communication: Turn switches 1 and 2 ON. (Connects ATmega2560 Serial3 to ESP8266).For example, to USB and ATmeg2560, USB and ESP8266, ATmega2560 and ESP8266.Table DIP- switch:ConnectionDIP1234567ATmega2560ESP8266ONONOFFOFFOFFOFFOFFUSB ATmega2560OFFOFFONONOFFOFFOFFUSBESP8266 (Update firmware or sketch)OFFOFFOFFOFFONONONUSBESP8266 (communication)OFFOFFOFFOFFONONOFFAll independentOFFOFFOFFOFFOFFOFFOFF Special solutionUSB ATmega328 ESP8266DIPSWITH 2Connection1234567USB ATmega2560 ESP8266ONONONONOFFOFFOFFTo RXD3/TXD3USB converter CH340G connect to RX0/TX0 of ATmega2560ESP8266 connect to RX3/TX3 of ATmega2560 Package Includes: 1 x Mega WiFi R3 Atmega2560 NodeMCU ESP8266 32Mb Memory USB-TTL CH340G Compatible For Arduino Mega