If you look just for the focuser controller to your telescope, then you are in the right place. FocuserOne is a simple to use yet powerful device that can control almost any type of focusing stepper motor. It is equipped with dedicated panel software, ASCOM and INDI driver, buttons to control the focus manually, and an astro-friendly high contrast OLED display.

FocuserOne device supports unipolar stepper motors (like Robofocus or Moonlite), and bipolar as well. In terms of the motor resolution, FocuserOne supports full-step mode, half-step mode, and two microstepping modes – 1/8 and 1/32 step.

Temperature compensation is possible with an additional temperature and humidity sensor. FocuserOne supports linear compensation. A compensation calculator is available, so determining the temperature compensation coefficient for the setup is pretty straightforward.

Another useful functionality of FocuserOne panel software is charting. Changes in focuser position, ambient temperature, and humidity (with optional sensor) can be presented in a graphical way, but also can be written down to the log file for future processing.

Key features of the FocuserOne device:

  • powered with 12V DC
  • DB9 stepper motor output, Robofocus, and Moonlite compatible pinout
  • unipolar, bipolar, full step, half step, 1/8 and 1/32 micro step support out of the box
  • 1.8A maximum output current (1.2A maximum hold current)
  • built-in control buttons
  • high contrast OLED display (regulated brightness, can be switched off)
  • temperature and humidity sensor (optional)
  • dedicated panel software with many additional features
  • ASCOM and INDI drivers available

Latest software and downloads

FocuserOne control panel 1.2.0 (for revision 1.0 *)
FocuserOne control panel 2.0.0 (for revision 2.0 *)
ASCOM Local Server Driver 2.0.2
ASCOM Local Server Driver 3.0.2
INDI driver (beta)
FocuserOne firmware 20210227 (for revision 1.0 *)
FocuserOne firmware 20220210 (for revision 2.0 *)
FocuserOne manual (PDF)

*) revision 1.0 has sensor socket oriented horizontally. Revision 2.0 has a sensor socket oriented vertically

If you look for a more advanced and feature-rich device, please take a look at the AstroLink page.