Modern Device Forum

I bought 4 extracoreMD boards. I used one in a breadboard and was successful uploading sketches using a Adafruit USB to FTDi adaper. It uploads fine at 115200 without any problems. The other three only show that the PC transmitted but the board never responds.. Do I need to change any upload setting...

I have an odd situation. I bought three of the extracoreMD boards and have been playing with one on a breadboard. I can upload sketches using the arduino IDE to it using a Adafruit USB to ftdi TTL cable. It has worked fine for several weeks and in my troubleshooting today, still does. I'm now ready ...