[Jacob]’s sweet hack creates an arbitrary number of CAN “devices” inside the Arduino code, and can treat each one of them as its own serial data channel. The “N” in CAN stands for ...

Even if you’re paid minimum wage I’ll bet you the average hacker will be able to implement UART, go to work, and earn the $30 for the Arduino before most people finish figuring out how to code ...

Prestissimo Uno+ Arduino dev board with extra I2C UART SPI ADC IO and PWM channels. 2:24 pm November 5, 2018 By Julian Horsey.

Open the Arduino software and paste the Arduino code (the text in the box near the bottom of the post) into a new sketch. Click Sketch > Verify / Compile to make sure the code is properly in there.

The new Arduino hardware offers a small and straightforward USB to UART converter with digital isolator, working between 2.5V and 5V up to 3Mboud, complete with an Arduino Pro mini connector.