This is a circuit board that supports an ESP32 Dev Kit board or TTGO-T1 board controlling four stall-motor turnout motors for a model railroad. It also has sense logic to return the state of the turnouts, using one pole of the DPDT contacts in the stall-motor (typical of Tortoise stall-motors). This circuit board provides connections to a LCC CAN network via RJ45 connectors, the ability to inject and extract 12V power from the LCC CAN network, and a 5V power supply from the LCC CAN network 12V power bus.

Uses 8 GPIO pins:                                               

GPIO0: Motor1                                                         

GPIO12: Motor2                                                          

GPIO34: Points1                                                        

GPIO35: Points2                                                        

GPIO15: Motor3                                                         

GPIO25: Motor4                                                         

GPIO32: Points3                                                        

GPIO33: Points4                                                        

GitHub Projecct:                                                               

https://github.com/RobertPHeller/RPi-RRCircuits/tree/master/ESP32QuadSMCSense 

Mouser Projects (parts):                                                        

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=330542c522

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=82b1e6b259

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=330542c522

OpenMRN Lite sketch program on GitHub at:

https://github.com/RobertPHeller/RPi-RRCircuits/tree/master/ESP32MRNSketches/ESP32QuadSMCSense