🔌 Enhanced Songhe Mega2560 + WiFi R3: Mega NodeMCU with USB-TTL CH340G, ATmega2560, ESP8266 32Mb Memory – Arduino & WeMos ESP8266 Compatible Review

I have bought several of these picks and they have worked well. I paired it with a 3.5 inch TFT LCD and it's a great device for makers. Instructions can be found here: bit dot ly/2O3fPFF

A useful tidbit I learned through trial and error: If you want to use this board with an external power supply without connecting it to the USB port, you must set DIP switches 1 and 2 to ON and DIP switches 3 to 7 to OFF.

came in the form of a bare board with no instructions. It has a mode switch, 8 toggle switches and a 3 position switch with no indication of what they do. It's said to have Wi-Fi, but there are no instructions on how to use it. Does anyone know how to use the advanced features of this board? and the usb cable is only 20"

Left switch is on, right switch is off. The top switch is zero, not 1, and is held in the correct position. First we managed to get it working as a Mega, then it stopped communicating over the serial port. Now I can't download to USB. Could not find the network.

All information on the web is based on tools and code that Espressif no longer maintains. I couldn't get it to work using AT commands - and there's no information anywhere on how to properly flash any part of the ESP8266 using modern SDKs (is it 32MB? 32MB-C? What locations? There's no documentation that this supports boarding anywhere).

I've been using the Mega 2560 for a few years now. I have this one with WIFI and it doesn't program. Keep getting a timeout message. Search the internet and you'll find many, many issues reported with the same board. Just fix it to change the capacitor on the board or press the reset button until you get lucky. NOT WORTH YOUR TIME OR MONEY. MY MISTAKE LEAVING RULE NUMBER 1 NEVER BUY ANYTHING ON AMAZON WITHOUT AT LEAST A 60% FIVE STAR RATING.

All information on the web is based on tools and code that Espressif no longer supports. I couldn't get it to work using AT commands - and there's no information anywhere on how to properly flash any part of the ESP8266 using modern SDKs (is it 32MB? 32MB-C? What locations? There's no documentation that this supports boarding anywhere).

Have been using the Mega 2560 for a few years. I have this with WIFI and it cannot be programmed. Keep getting a timeout message. Search the internet and you'll find many, many issues reported with the same board. Just fix it to change the capacitor on the board or press the reset button until you get lucky. NOT WORTH YOUR TIME OR MONEY. MY MISTAKE LEAVING RULE NUMBER 1 NEVER BUY ANYTHING ON AMAZON WITHOUT AT LEAST A 60% FIVE STAR RATING.

It took me hours of reading and research to get it working. I would make another start if the seller included the documentation and that the ESP8266 comes with updated software. I had to update the AT version to make it work and most online examples I found use Serial1 (pins 18 and 19), the board hardware comes for Serial 3 (pins 14 and 15), switch 1 and switch 2 should be set to the correct potion, it was awful figuring all this out without documentation but I got it working.

Works as advertised. I had no problem uploading to esp8266 or Arduino Mega. I also had no problem passing serial number from esp6266 to Arduino. When sending a serial number from the esp8266 to the Arduino, switches 1 and 2 must be on. The sw switch also selects where you send the serial number from the esp8266 to either serial number 0 or serial number 3 on the Arduino. If you choose serial number 0, make sure dip switches 3 and 4 are off as this will conflict with the onboard UART. Not sure…