Hey Tom,
I would not say that the buildbotics-derived Onefinity Original/PRO Series controller is not reliable. What is not reliable, is
- Stall Homing (better Retrofit retrofit proximity sensors as limit switches)
- the use of unshielded stepper cables makes the machine very susceptible for EMI which can lead to loosing steps or erratical axis movements
- the use of tin-plated Molex-Amphenol connectors that are only made for internal use and their lacking strain relief on moving cables can make bad connections which can lead to loosing steps or erratical axis movements
- clicking on the estop mode or power cycling makes you loose your offsets (note that if you want to get back your offsets after such an event, they are still in the log file)