Problems with more or equal than 3 of char !

[josewilker]

When you put more or equal than 3 of (!) symbol on a Serial.println ... like, [Serial.println("MATCH!!!!");]... compiler it's ok ... but when I try upload sketch to arduino, show problems with AVR and a lot of timeout.

Try:

Serial.println("MATCH"); - WORKS
Serial.println("MATCH!"); - WORKS
Serial.println("MATCH!!"); - WORKS
Serial.println("MATCH!!!"); - PROBLEM : avrdude: stk500v2_ReceiveMessage(): timeout

[PaulStoffregen]

Maybe you've using an ancient Arduino Mega? Or maybe a Chinese clone, programmed with the very old bootloader? (before this problem was fixed... years ago)

[ffissore]

Indeed. It looks like a problem solved in #1183. Please upgrade bootloader. Reopen if upgrading it doesn't fix

[josewilker]

uow! tks! \o/

[PaulStoffregen]

Assuming this problem was due to a clone or counterfeit still using the ancient bootloader, you might try posting negative feedback on whatever site sold the board, or elsewhere, to warn other users that they're still shipping the buggy bootloader.

Most of the cloners and counterfeiters couldn't care less if they are making a quality product.... (they know their customers will come to the real Arduino for support)..... but who knows, maybe enough negative feedback might even prompt them to start using the fixed bootloader?