Use when writing or debugging code for Arduino Uno, Nano, Pro Mini, or any ATmega328P/ATmega168 board. Provides expert AVR knowledge: 2KB SRAM discipline (F()/PROGMEM), Timer0/1/2 conflict map (Servo vs tone() vs PWM pins 9/10/3/11), external interrupts (pins 2/3 only) vs pin-change interrupts, 5V↔3
Use when writing or debugging code for Arduino Uno, Nano, Pro Mini, or any ATmega328P/ATmega168 board. Provides expert AVR knowledge: 2KB SRAM discipline (F()/PROGMEM), Timer0/1/2 conflict map (Servo vs tone() vs PWM pins 9/10/3/11), external interrupts (pins 2/3 only) vs pin-change interrupts, 5V↔3.3V level shifting for I2C/SPI/UART peripherals, millis() rollover-safe timing, bootloader vs ISP pr