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Resolve the common 'avrdude: stk500_getsync()' error on Arduino Uno boards. This guide covers port conflicts, RX/TX interference, driver issues, and hardware loopback testing.
On AVR-based Arduino boards, the EEPROM library provides EEPROM.write() for persisting individual bytes across resets. The underlying EEPROM cells have a finite write/erase endurance, typically specified around 100,000 cycles per byte, and reading an address does not consume that budget. For sketches that update the same address frequently—such as logging a
arduino