Mega upload when wifi module connected issue

Projects Networking, Protocols, and Devices
1

Hi All
Hope this is an appropriate place to post this.

Arduino Mega 2560 R3
Generic ESP8266 ESP-12E UART WIFI Wireless Shield (..this one)

My problem is this. Without the shield mounted on the Mega, my code uploads and runs fine. When I mount the WiFi shield, sketch compiles and seems to upload with a full looking progress bar.
Upload then fails with the following error:

Sketch uses 21330 bytes (8%) of program storage space. Maximum is 253952 bytes.
Global variables use 1263 bytes (15%) of dynamic memory, leaving 6929 bytes for local variables. Maximum is 8192 bytes.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer

I have read posts about this error being a potential boot loader issue, but not in conjunction with a shield being attached.

This is the last issue in a long line of issues! I was hoping getting data from Arduino to web would be easier than its turned out!

It seems the arduino receives its first packet of the sketch and never replies... The RX light on the Mega flashes once

Any help gratefully accepted
Phil

2

shield's DIP switch setting?

3

Hi
All the red dip switches are set down. Against the numbers. I believe this is OFF.

Thanks for taking the time :slight_smile:
Phil