the ATmega 8-‐bit MCU* • A bootloader to upload and run user programs • A library abstrac?ng low-‐level MCU* stuff • A simplified IDE wrapping the GNU toolchain *Micro-‐Controller Unit
supply can be 7 to 12 V …can go up to 20 V, but try to avoid it • Each I/O pin can handle 20 mA (safely) …but avoid more than 100 mA for the sum of all I/O pins …and never give them more than 5 V or nega?ve voltages • The “5V” pin can source about 100 mA (without much heat) …but the unregulated Vin pin (power supply voltage) can handle up to 1 A Electrical Specs (Arduino Uno)
Vac ) • Current (for both DC and AC) • Resistance (Ω) • Capacitance (F) • Transistor gain (hFE) • Con?nuity check • Temperature (°C) Any brand will do, but don’t be cheap…
Far greater compu?ng power • Network connec?vity out-‐of-‐the-‐box • Mul?ple programming languages • Runs a “standard” Linux OS • 20€ • Robust GPIOs • Analog inputs and several PWMs • Low power consump?on • Replaceable microcontroller (< 5€) The Arduino makes for a great addiSon to the RPi...