Can't upload sketch to NyBoard
I have a Bittle with NyBoard V1_0 and cannot get my Arduino IDE to upload a sketch to it. First tried with the WriteInstinct.ino and then a blank/default sketch created by Arduino IDE new file. I tried with both the USB and the Bluetooth. In all cases, it's stuck at: avrdude: stk500_recv(): programmer is not responding.
I've stopped and restarted the Arduino IDE (even reinstalled it) and pressed the reset button on the board but it always fails with this error.
I noticed when I use the USB adapter, the yellow RX led always stays on, rather than blinking and then turning off as I think the instructions say. See attached picture.
With the Bluetooth adapter, it all seems OK except I still get the error: avrdude: stk500_recv(): programmer is not responding. I noticed that the blinking LED on bluetooth adapter stays on (stops blinking) while the Arduino IDE is trying (and failing) to upload, and then after 10 tries, the IDE gives up and the LED goes from solid on to blinking again, so it seems like there is some connection established causing the LED behavior to change.
What should I do to fix this problem? This is my first experience with Arduino and I don't have any other boards to test with. How do I know if my bootloader crashed and I need to burn a new bootloader?
I really appreciate your support and that you would be willing to send the resetter -- which is not part of my package by the way.
However, I will try the Arduino-as-ISP-solution first. Looks managable. 🤗 Thank you!