GSO Monorail 1:10 focuser

thingiverse

This is a precision focus adjuster for GSO Monorail telescope mounts with 1:10 fine focusing capabilities. The project draws inspiration from the https://github.com/fehlfarbe/arduino-motorfocus codebase, offering a high level of customization and control. Here's what you'll need to assemble this motor focuser: * 4x M3x20mm DIN912 screws for mounting to the focuser * 2x M3x10mm DIN912 screws and 2x locknuts for securing the stepper motor * A stepper motor board (5V 28BYJ-48 with ULN2003 driver) for precise motor control * An Arduino nano clone (ATmega328P CH340 chip) for programming and control * 6x female-female jumper cables for connecting components To connect the Arduino, follow these steps: * Pin D3 connects to IN4 on the driver board * Pin D4 connects to IN3 on the driver board * Pin D5 connects to IN2 on the driver board * Pin D6 connects to IN1 on the driver board * Ground (GND) and power (Vin) connections are also required To program the Arduino, use the Arduino IDE with a Linux system. Make sure you're part of the correct user group to access the ttyUSBx port. For integration with telescope mounts, this focuser uses Indilib, which supports the moonlite protocol. This allows seamless communication between the focuser and your mount. Note: Before securing the PCB, make sure the motor is properly seated in place. Future versions may simplify assembly, but for now, be patient and take your time to ensure everything fits together correctly.