Running into this error while configuring the I-axis in Marlin "Compilation error: 'I_MIN_PIN' was not declared in this scope" However, there is no 'I_MIN_PIN' variable located anywhere in the configuration files. Support for additional axes is slim because it is a newer feature. I am using a RAMPS 1.4 board with A4988 drivers. If anyone has run into this error before, I would really appreciaby cmshap - Firmware - Marlin