https://www.hackster.io/news/ponoor-experiments-step400-is-an-osc-and-arduino-compatible-four-axis-stepper-driver-a8d6138a1208
Ponoor Experiments' STEP400 Is an OSC and Arduino-Compatible Four-Axis Stepper Driver - Hackster.io
Built around the Microchip SAM D21, the board offers four outputs, sensor inputs, Ethernet connectivity, and up to 5A power output.