If, however, they don't seem to be a great fit for your needs, there are several other small Arduino boards you can use instead, including the Micro (18 by 48 mm), MKR Zero (25 x 61.5 mm) and MKR ...

Arduino: The Precise Microcontroller. Arduino, by contrast, is not a full computer but a microcontroller. Devices like the Arduino Uno or Nano excel at reading analog sensors, controlling motors, and ...