Having posted here on this topic after painfully diagnosing the bootloader hang in my rambo V1.1B
unit, I was firmly informed by Arduino that the 3 exclamation hang in the bootloader was fixed back in 2011.
I trusted this was the case and invested in a more recent Rambo V1.2 hardware, the design which was done since 2011, and of course manufacturing done since the design.
Tried this loadertest.ino file (copied from elsewhere this forum)
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
Serial.println("Please!!!");
}
void loop() {
// nothing
}
THIS SIMPLE TEST STILL FAILS IN NEW HARDWARE BEING SHIPPED TODAY!
I found the new Rambo V1.2's are still indeed being shipped with broken boot-loaders, and unless you have
special hardware to re-burn the boot-loader, there is nothing the end user can do to fix it.
Does anyone care the hardware is still being shipped with fatally flawed boot-loaders?