Vermes
Advanced Member level 4
It is a controller for CNC machines not based on a processor (controller V3).
Assumptions:
- it has to work as if it was based on a processor (half-steps, a similar frequency, the same voltage levels, etc.)
- to be simple in construction
- to be cheap to build
Parameters:
- max input voltage of 24V (but at such a voltage, strong cooling would do well)
- current per phase max 1,5~2 A (linear current limiters for each phase separately, you must pay attention to maximum power of dissipation for end MOSFETs – BUZ11 and IRFZ-44N in tested were used). It is very important for the transistors to have a built-in return diode
- cooperation with all the programs that give signals of step/dir
- control voltages in TTL standard
Schema and the board:
Link to original thread (attachment) – 4-osiowy sterownik maszyny CNC