Seletek LIMPET controller

149,00 (price without TAX 123,14)

Controls focuser, rotator, filter wheels, heater bands, fans … Compatible with ASCOMLinux / INDIlib, and also with INDIGO

Seletek LIMPET, the smallest and most recent Seletek! ASCOM, INDIGO and INDILib compliant!

With a small 12V battery and the wifi interface, no cables coming out of the telescope!

  • new focuser controller from:
      • any astronomy program (ASCOM and INDILib drivers available)
      • your smartphone
      • your computer’s web browser
  • can alternatively control a camera rotator (with our Windows software and ASCOM)
  • very small enclosure
  • central hole to easily attach the Limpet to the telescope using a single screw
  • Wifi and USB connection
  • Very low power requirements (30mA idle connected to wifi, 530mA focusing with our standard motor)
  • With improved WIFI signal, no wifi antenna is needed! – New version from Feb/2022
  • Optional external temperature sensor
  • all the time-proven Seletek Armadillo and Platypus software will work with it. Just one device at any time.
  • Including a screw locking 2.1x 5.5mm jack for safe attachment of power cable
  • 5.5 / 2.1mm standard jack, center positive, 12V dc (13.8V, as supplied by some batteries, is valid)
  • ASCOM, INDIGO and INDILib enabled
  • focus from your smartphone via web interface (NEW!)

Why is an external controller like the Armadillo, Platypus, Tarsier or Limpet better than an “all in one” (focuser with embedded motor and cables)?

With the Limpet you can:

  • Control one focus motor
  • Control one rotator motor
  • With our free program “PinByPin: independent control of any controller pin, manual or automated (depending on temperature delta), useful not only for fan control but also for dew heater bands, as one of the ZeroDew system.
  • Control of the VSI’s “Zerotator”, or the Astrodon “TAKometer”
  • Seletek à la carte” allows you to customize your Seletek (original or Armadillo or Limpet) to match your specific needs
  • … and we always accept suggestions, please contact us at

The focuser, rotator and filter wheel software are ASCOM compliant.
And Linux / INDIlib driver for the focuser!
And, also INDIGO driver for the focuser!


Technical specifications:

  • Focuser controller
  • Outputs: 4 power digital outputs (up to 1.5A) – thermal auto-shutdown of the drivers in case of overheating
  • Inputs: 3 analogical-digital inputs (1 for the temperature external sensor, 2 protected with resettable fuses)
  • PC connection via USB and Wifi
  • Size: 70 * 70 * 26 mm
  • Weight: <85 gr.
  • External power supply 12V dc (13.8V, as supplied by some batteries, is valid)
  • The software supports any current Windows version (XP, Vista, 7, 10, 32bit, 64bit)
  • ASCOM compliant software (focuser & rotator)
  • INDIlib focuser driver
  • Will work with FocusMax, MaximDL, CCDCommander, ACP, CCD AutoPilot, SGPro, Voyager, APT… and any ASCOM aware astronomy software

The Limpet includes the power supply cable, with screwed-on terminal, and a tripod thread screw.

Available add-ons:



You can purchase just the Limpet controller (this item) for your existing motorized focuser, or the complete set Seletek Limpet KIT,  which includes:

(1) Select your focuser model focuser according to the images shown here





Some example screens:



You may also like…