Helion Core R4

Arduino-class board, USB-C, 48 MHz

$32

United States · lead 1–3 days · 240 in bay

A drop-in Arduino-compatible workhorse with a modern USB-C stack, extra flash, and headers that survive being re-seated. The board we keep on every bench.

• Arduino IDE
• Qwiic / Grove
• Open schematics

MCU

RA4M1 48 MHz

Flash / RAM

256 KB / 32 KB

I/O

14 digital, 6 analog

Power

USB-C 5 V

Form

Uno footprint

SKU

HL-ARD-R4