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Flexi-Ninja

Flexi-Ninja is a fork of stepper-ninja for Expatria's hardware. Flexi-Ninja replaces the breakout board abstraction with a PlatformIO based build system and boa

matthew

Published July 07, 2026

Original author: mikemacwillieOriginal source (new tab)

Flexi-Ninja

Project description

Canadian-designed open source hardware. For everyone. Flexi-Ninja is a fork of stepper-ninja for Expatria's hardware. Flexi-Ninja replaces the breakout board abstraction with a PlatformIO based build system and board definitions in config.h. Different in this fork from upstream stepper-ninja: Fixed I/O with intuitive HAL pin names that match PCB PIO-based step generation with added position feedback to LinuxCNC for closed-loop tracking Configurable DIR pin setup time per axis via HAL pin to meet stepper driver timing requirements FlexGPIO I2C IO expander Used for alarm inputs, tool/probe…

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