I'm currently building two guitar effect pedals. They use analog circuitry using the Arduino as the brain to interact with the circuit via PWM pins or digital resistors. I have breadboarded both of them with an Arduino Nano each and they work flawlessly. However, a Nano is too bulky and expensive to…

How are you programming the atmega328P? A bare chip comes with the clock source set to the internal oscillator at 1MHz, you will need to set the fuses properly to change to an external 16MHz crystal. If you are using the Arduino IDE, you can use Tools > Burn Bootloader to set the fuses even if you…

Weird time behavior (millis, delay and tune) when the processor runs outside the Arduino board

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Weird time behavior (millis, delay and tune) when the processor runs outside the Arduino board

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