This is when you pull out your traditional Morse code keyer and have a chat with ... [Mike Herr] found a grey area by mechanically interfacing an Arduino with a straight key.

Apart from understanding the Arduino's code language, one of the most confusing ... Additionally, the Nano and Micro feature 20 digital pins, labeled as RX, TX, D2 to D13, and A0 to A5.

When you start on larger projects, say you upgrade to a Due or Teensy for more code or memory space, the Arduino IDE can hamper your productivity. Moving beyond these limitations requires a new ...