Stepper-Ninja is newer firmware to make a inexpensive Ethernet Pico development board run with Linuxcnc. It is a open-source, free, high-performance step generator, quadrature encoder counter, digital I/O, and PWM interface for LinuxCNC. Its capable of fast 1Mhz step rates with very low jitter. The quality of the generated step pulses is better than grbl, [ ]