PTL Dual Stepper Driver

This board is the main control board running the full functionality of the PTL fixture.

It supports a 7-24V input range, down-converting to run onboard functionality while providing the full input power to the motor outputs.

Two individual stepper driver subcircuits allow completely independent motor control, including seperate disable functionality and fault sensing.

Programming and debug output are combined through the USB-C connector exposed in the main PTL enclosure, allowing device access for reflash and troubleshooting even after full assembly.

Connectivity is through either the onboard chip antenna over standard 2.4GHz WiFi, or the two RS-485 DMX in/through connectors. There are also connectors for the analog laser dimming subcircuit and two input limit switches.

Device status and information can be communicated either through the OLED external connector, the RGB addressable status LED, or both. Three pushbuttons are sidemounted to the board edge to allow OLED control from outside an enclosure.