The Arduino UNO R4 boasts a 3x performance increase over the UNO R3 and , in addition, SRAM has been upgraded from 2kB to 32kB, and flash memory from 32kB to 256kB to support more complex projects.

If you would like to build your very own benchtop power supply you might be interested in a DIY tutorial for Supplino. A versatile compact Arduino power supply capable of providing from 4 to 40 ...

USB-C and power delivery are not simple standards, but the ability to add a high-speed data interface and a programmable power supply into almost any project has real potential.

• Bootloader: Optiboot (same as Arduino UNO) • Power Supply: 100 – 240Vac • Digital Circuit Operating Voltage: 5V • Digital I/O Pins: 14 (D0~D8 Reserved / D9~D13 Free) ...